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f9bc9e65 JF |
1 | #!/usr/bin/python |
2 | # | |
3 | # top-like utility for displaying kvm statistics | |
4 | # | |
5 | # Copyright 2006-2008 Qumranet Technologies | |
6 | # Copyright 2008-2011 Red Hat, Inc. | |
7 | # | |
8 | # Authors: | |
9 | # Avi Kivity <avi@redhat.com> | |
10 | # | |
11 | # This work is licensed under the terms of the GNU GPL, version 2. See | |
12 | # the COPYING file in the top-level directory. | |
fabc7128 JF |
13 | """The kvm_stat module outputs statistics about running KVM VMs |
14 | ||
15 | Three different ways of output formatting are available: | |
16 | - as a top-like text ui | |
17 | - in a key -> value format | |
18 | - in an all keys, all values format | |
19 | ||
20 | The data is sampled from the KVM's debugfs entries and its perf events. | |
21 | """ | |
9cc5fbbb | 22 | from __future__ import print_function |
f9bc9e65 JF |
23 | |
24 | import curses | |
25 | import sys | |
9cc5fbbb | 26 | import locale |
f9bc9e65 JF |
27 | import os |
28 | import time | |
29 | import optparse | |
30 | import ctypes | |
31 | import fcntl | |
32 | import resource | |
33 | import struct | |
34 | import re | |
f9ff1087 | 35 | import subprocess |
f9bc9e65 | 36 | from collections import defaultdict |
f9bc9e65 JF |
37 | |
38 | VMX_EXIT_REASONS = { | |
39 | 'EXCEPTION_NMI': 0, | |
40 | 'EXTERNAL_INTERRUPT': 1, | |
41 | 'TRIPLE_FAULT': 2, | |
42 | 'PENDING_INTERRUPT': 7, | |
43 | 'NMI_WINDOW': 8, | |
44 | 'TASK_SWITCH': 9, | |
45 | 'CPUID': 10, | |
46 | 'HLT': 12, | |
47 | 'INVLPG': 14, | |
48 | 'RDPMC': 15, | |
49 | 'RDTSC': 16, | |
50 | 'VMCALL': 18, | |
51 | 'VMCLEAR': 19, | |
52 | 'VMLAUNCH': 20, | |
53 | 'VMPTRLD': 21, | |
54 | 'VMPTRST': 22, | |
55 | 'VMREAD': 23, | |
56 | 'VMRESUME': 24, | |
57 | 'VMWRITE': 25, | |
58 | 'VMOFF': 26, | |
59 | 'VMON': 27, | |
60 | 'CR_ACCESS': 28, | |
61 | 'DR_ACCESS': 29, | |
62 | 'IO_INSTRUCTION': 30, | |
63 | 'MSR_READ': 31, | |
64 | 'MSR_WRITE': 32, | |
65 | 'INVALID_STATE': 33, | |
66 | 'MWAIT_INSTRUCTION': 36, | |
67 | 'MONITOR_INSTRUCTION': 39, | |
68 | 'PAUSE_INSTRUCTION': 40, | |
69 | 'MCE_DURING_VMENTRY': 41, | |
70 | 'TPR_BELOW_THRESHOLD': 43, | |
71 | 'APIC_ACCESS': 44, | |
72 | 'EPT_VIOLATION': 48, | |
73 | 'EPT_MISCONFIG': 49, | |
74 | 'WBINVD': 54, | |
75 | 'XSETBV': 55, | |
76 | 'APIC_WRITE': 56, | |
77 | 'INVPCID': 58, | |
78 | } | |
79 | ||
80 | SVM_EXIT_REASONS = { | |
81 | 'READ_CR0': 0x000, | |
82 | 'READ_CR3': 0x003, | |
83 | 'READ_CR4': 0x004, | |
84 | 'READ_CR8': 0x008, | |
85 | 'WRITE_CR0': 0x010, | |
86 | 'WRITE_CR3': 0x013, | |
87 | 'WRITE_CR4': 0x014, | |
88 | 'WRITE_CR8': 0x018, | |
89 | 'READ_DR0': 0x020, | |
90 | 'READ_DR1': 0x021, | |
91 | 'READ_DR2': 0x022, | |
92 | 'READ_DR3': 0x023, | |
93 | 'READ_DR4': 0x024, | |
94 | 'READ_DR5': 0x025, | |
95 | 'READ_DR6': 0x026, | |
96 | 'READ_DR7': 0x027, | |
97 | 'WRITE_DR0': 0x030, | |
98 | 'WRITE_DR1': 0x031, | |
99 | 'WRITE_DR2': 0x032, | |
100 | 'WRITE_DR3': 0x033, | |
101 | 'WRITE_DR4': 0x034, | |
102 | 'WRITE_DR5': 0x035, | |
103 | 'WRITE_DR6': 0x036, | |
104 | 'WRITE_DR7': 0x037, | |
105 | 'EXCP_BASE': 0x040, | |
106 | 'INTR': 0x060, | |
107 | 'NMI': 0x061, | |
108 | 'SMI': 0x062, | |
109 | 'INIT': 0x063, | |
110 | 'VINTR': 0x064, | |
111 | 'CR0_SEL_WRITE': 0x065, | |
112 | 'IDTR_READ': 0x066, | |
113 | 'GDTR_READ': 0x067, | |
114 | 'LDTR_READ': 0x068, | |
115 | 'TR_READ': 0x069, | |
116 | 'IDTR_WRITE': 0x06a, | |
117 | 'GDTR_WRITE': 0x06b, | |
118 | 'LDTR_WRITE': 0x06c, | |
119 | 'TR_WRITE': 0x06d, | |
120 | 'RDTSC': 0x06e, | |
121 | 'RDPMC': 0x06f, | |
122 | 'PUSHF': 0x070, | |
123 | 'POPF': 0x071, | |
124 | 'CPUID': 0x072, | |
125 | 'RSM': 0x073, | |
126 | 'IRET': 0x074, | |
127 | 'SWINT': 0x075, | |
128 | 'INVD': 0x076, | |
129 | 'PAUSE': 0x077, | |
130 | 'HLT': 0x078, | |
131 | 'INVLPG': 0x079, | |
132 | 'INVLPGA': 0x07a, | |
133 | 'IOIO': 0x07b, | |
134 | 'MSR': 0x07c, | |
135 | 'TASK_SWITCH': 0x07d, | |
136 | 'FERR_FREEZE': 0x07e, | |
137 | 'SHUTDOWN': 0x07f, | |
138 | 'VMRUN': 0x080, | |
139 | 'VMMCALL': 0x081, | |
140 | 'VMLOAD': 0x082, | |
141 | 'VMSAVE': 0x083, | |
142 | 'STGI': 0x084, | |
143 | 'CLGI': 0x085, | |
144 | 'SKINIT': 0x086, | |
145 | 'RDTSCP': 0x087, | |
146 | 'ICEBP': 0x088, | |
147 | 'WBINVD': 0x089, | |
148 | 'MONITOR': 0x08a, | |
149 | 'MWAIT': 0x08b, | |
150 | 'MWAIT_COND': 0x08c, | |
151 | 'XSETBV': 0x08d, | |
152 | 'NPF': 0x400, | |
153 | } | |
154 | ||
155 | # EC definition of HSR (from arch/arm64/include/asm/kvm_arm.h) | |
156 | AARCH64_EXIT_REASONS = { | |
157 | 'UNKNOWN': 0x00, | |
158 | 'WFI': 0x01, | |
159 | 'CP15_32': 0x03, | |
160 | 'CP15_64': 0x04, | |
161 | 'CP14_MR': 0x05, | |
162 | 'CP14_LS': 0x06, | |
163 | 'FP_ASIMD': 0x07, | |
164 | 'CP10_ID': 0x08, | |
165 | 'CP14_64': 0x0C, | |
166 | 'ILL_ISS': 0x0E, | |
167 | 'SVC32': 0x11, | |
168 | 'HVC32': 0x12, | |
169 | 'SMC32': 0x13, | |
170 | 'SVC64': 0x15, | |
171 | 'HVC64': 0x16, | |
172 | 'SMC64': 0x17, | |
173 | 'SYS64': 0x18, | |
174 | 'IABT': 0x20, | |
175 | 'IABT_HYP': 0x21, | |
176 | 'PC_ALIGN': 0x22, | |
177 | 'DABT': 0x24, | |
178 | 'DABT_HYP': 0x25, | |
179 | 'SP_ALIGN': 0x26, | |
180 | 'FP_EXC32': 0x28, | |
181 | 'FP_EXC64': 0x2C, | |
182 | 'SERROR': 0x2F, | |
183 | 'BREAKPT': 0x30, | |
184 | 'BREAKPT_HYP': 0x31, | |
185 | 'SOFTSTP': 0x32, | |
186 | 'SOFTSTP_HYP': 0x33, | |
187 | 'WATCHPT': 0x34, | |
188 | 'WATCHPT_HYP': 0x35, | |
189 | 'BKPT32': 0x38, | |
190 | 'VECTOR32': 0x3A, | |
191 | 'BRK64': 0x3C, | |
192 | } | |
193 | ||
194 | # From include/uapi/linux/kvm.h, KVM_EXIT_xxx | |
195 | USERSPACE_EXIT_REASONS = { | |
196 | 'UNKNOWN': 0, | |
197 | 'EXCEPTION': 1, | |
198 | 'IO': 2, | |
199 | 'HYPERCALL': 3, | |
200 | 'DEBUG': 4, | |
201 | 'HLT': 5, | |
202 | 'MMIO': 6, | |
203 | 'IRQ_WINDOW_OPEN': 7, | |
204 | 'SHUTDOWN': 8, | |
205 | 'FAIL_ENTRY': 9, | |
206 | 'INTR': 10, | |
207 | 'SET_TPR': 11, | |
208 | 'TPR_ACCESS': 12, | |
209 | 'S390_SIEIC': 13, | |
210 | 'S390_RESET': 14, | |
211 | 'DCR': 15, | |
212 | 'NMI': 16, | |
213 | 'INTERNAL_ERROR': 17, | |
214 | 'OSI': 18, | |
215 | 'PAPR_HCALL': 19, | |
216 | 'S390_UCONTROL': 20, | |
217 | 'WATCHDOG': 21, | |
218 | 'S390_TSCH': 22, | |
219 | 'EPR': 23, | |
220 | 'SYSTEM_EVENT': 24, | |
221 | } | |
222 | ||
223 | IOCTL_NUMBERS = { | |
224 | 'SET_FILTER': 0x40082406, | |
225 | 'ENABLE': 0x00002400, | |
226 | 'DISABLE': 0x00002401, | |
227 | 'RESET': 0x00002403, | |
228 | } | |
229 | ||
9cc5fbbb JC |
230 | ENCODING = locale.getpreferredencoding(False) |
231 | ||
692c7f6d | 232 | |
f9bc9e65 | 233 | class Arch(object): |
fabc7128 JF |
234 | """Encapsulates global architecture specific data. |
235 | ||
236 | Contains the performance event open syscall and ioctl numbers, as | |
237 | well as the VM exit reasons for the architecture it runs on. | |
f9bc9e65 JF |
238 | |
239 | """ | |
240 | @staticmethod | |
241 | def get_arch(): | |
242 | machine = os.uname()[4] | |
243 | ||
244 | if machine.startswith('ppc'): | |
245 | return ArchPPC() | |
246 | elif machine.startswith('aarch64'): | |
247 | return ArchA64() | |
248 | elif machine.startswith('s390'): | |
249 | return ArchS390() | |
250 | else: | |
251 | # X86_64 | |
252 | for line in open('/proc/cpuinfo'): | |
253 | if not line.startswith('flags'): | |
254 | continue | |
255 | ||
256 | flags = line.split() | |
257 | if 'vmx' in flags: | |
258 | return ArchX86(VMX_EXIT_REASONS) | |
259 | if 'svm' in flags: | |
260 | return ArchX86(SVM_EXIT_REASONS) | |
261 | return | |
262 | ||
692c7f6d | 263 | |
f9bc9e65 JF |
264 | class ArchX86(Arch): |
265 | def __init__(self, exit_reasons): | |
266 | self.sc_perf_evt_open = 298 | |
267 | self.ioctl_numbers = IOCTL_NUMBERS | |
268 | self.exit_reasons = exit_reasons | |
269 | ||
692c7f6d | 270 | |
f9bc9e65 JF |
271 | class ArchPPC(Arch): |
272 | def __init__(self): | |
273 | self.sc_perf_evt_open = 319 | |
274 | self.ioctl_numbers = IOCTL_NUMBERS | |
275 | self.ioctl_numbers['ENABLE'] = 0x20002400 | |
276 | self.ioctl_numbers['DISABLE'] = 0x20002401 | |
c7d4fb5a | 277 | self.ioctl_numbers['RESET'] = 0x20002403 |
f9bc9e65 JF |
278 | |
279 | # PPC comes in 32 and 64 bit and some generated ioctl | |
280 | # numbers depend on the wordsize. | |
281 | char_ptr_size = ctypes.sizeof(ctypes.c_char_p) | |
282 | self.ioctl_numbers['SET_FILTER'] = 0x80002406 | char_ptr_size << 16 | |
c7d4fb5a | 283 | self.exit_reasons = {} |
f9bc9e65 | 284 | |
692c7f6d | 285 | |
f9bc9e65 JF |
286 | class ArchA64(Arch): |
287 | def __init__(self): | |
288 | self.sc_perf_evt_open = 241 | |
289 | self.ioctl_numbers = IOCTL_NUMBERS | |
290 | self.exit_reasons = AARCH64_EXIT_REASONS | |
291 | ||
692c7f6d | 292 | |
f9bc9e65 JF |
293 | class ArchS390(Arch): |
294 | def __init__(self): | |
295 | self.sc_perf_evt_open = 331 | |
296 | self.ioctl_numbers = IOCTL_NUMBERS | |
297 | self.exit_reasons = None | |
298 | ||
299 | ARCH = Arch.get_arch() | |
300 | ||
301 | ||
f9bc9e65 | 302 | class perf_event_attr(ctypes.Structure): |
fabc7128 JF |
303 | """Struct that holds the necessary data to set up a trace event. |
304 | ||
305 | For an extensive explanation see perf_event_open(2) and | |
306 | include/uapi/linux/perf_event.h, struct perf_event_attr | |
307 | ||
308 | All fields that are not initialized in the constructor are 0. | |
309 | ||
310 | """ | |
f9bc9e65 JF |
311 | _fields_ = [('type', ctypes.c_uint32), |
312 | ('size', ctypes.c_uint32), | |
313 | ('config', ctypes.c_uint64), | |
314 | ('sample_freq', ctypes.c_uint64), | |
315 | ('sample_type', ctypes.c_uint64), | |
316 | ('read_format', ctypes.c_uint64), | |
317 | ('flags', ctypes.c_uint64), | |
318 | ('wakeup_events', ctypes.c_uint32), | |
319 | ('bp_type', ctypes.c_uint32), | |
320 | ('bp_addr', ctypes.c_uint64), | |
321 | ('bp_len', ctypes.c_uint64), | |
322 | ] | |
323 | ||
324 | def __init__(self): | |
325 | super(self.__class__, self).__init__() | |
326 | self.type = PERF_TYPE_TRACEPOINT | |
327 | self.size = ctypes.sizeof(self) | |
328 | self.read_format = PERF_FORMAT_GROUP | |
329 | ||
692c7f6d | 330 | |
f9bc9e65 JF |
331 | PERF_TYPE_TRACEPOINT = 2 |
332 | PERF_FORMAT_GROUP = 1 << 3 | |
333 | ||
334 | PATH_DEBUGFS_TRACING = '/sys/kernel/debug/tracing' | |
335 | PATH_DEBUGFS_KVM = '/sys/kernel/debug/kvm' | |
336 | ||
692c7f6d | 337 | |
f9bc9e65 | 338 | class Group(object): |
fabc7128 JF |
339 | """Represents a perf event group.""" |
340 | ||
f9bc9e65 JF |
341 | def __init__(self): |
342 | self.events = [] | |
343 | ||
344 | def add_event(self, event): | |
345 | self.events.append(event) | |
346 | ||
347 | def read(self): | |
fabc7128 JF |
348 | """Returns a dict with 'event name: value' for all events in the |
349 | group. | |
350 | ||
351 | Values are read by reading from the file descriptor of the | |
352 | event that is the group leader. See perf_event_open(2) for | |
353 | details. | |
354 | ||
355 | Read format for the used event configuration is: | |
356 | struct read_format { | |
357 | u64 nr; /* The number of events */ | |
358 | struct { | |
359 | u64 value; /* The value of the event */ | |
360 | } values[nr]; | |
361 | }; | |
362 | ||
363 | """ | |
f9bc9e65 JF |
364 | length = 8 * (1 + len(self.events)) |
365 | read_format = 'xxxxxxxx' + 'Q' * len(self.events) | |
366 | return dict(zip([event.name for event in self.events], | |
367 | struct.unpack(read_format, | |
368 | os.read(self.events[0].fd, length)))) | |
369 | ||
692c7f6d | 370 | |
f9bc9e65 | 371 | class Event(object): |
fabc7128 | 372 | """Represents a performance event and manages its life cycle.""" |
f0cf040f JF |
373 | def __init__(self, name, group, trace_cpu, trace_pid, trace_point, |
374 | trace_filter, trace_set='kvm'): | |
099a2dfc SR |
375 | self.libc = ctypes.CDLL('libc.so.6', use_errno=True) |
376 | self.syscall = self.libc.syscall | |
f9bc9e65 JF |
377 | self.name = name |
378 | self.fd = None | |
f0cf040f JF |
379 | self.setup_event(group, trace_cpu, trace_pid, trace_point, |
380 | trace_filter, trace_set) | |
381 | ||
382 | def __del__(self): | |
fabc7128 JF |
383 | """Closes the event's file descriptor. |
384 | ||
385 | As no python file object was created for the file descriptor, | |
386 | python will not reference count the descriptor and will not | |
387 | close it itself automatically, so we do it. | |
388 | ||
389 | """ | |
f0cf040f JF |
390 | if self.fd: |
391 | os.close(self.fd) | |
f9bc9e65 | 392 | |
099a2dfc SR |
393 | def perf_event_open(self, attr, pid, cpu, group_fd, flags): |
394 | """Wrapper for the sys_perf_evt_open() syscall. | |
395 | ||
396 | Used to set up performance events, returns a file descriptor or -1 | |
397 | on error. | |
398 | ||
399 | Attributes are: | |
400 | - syscall number | |
401 | - struct perf_event_attr * | |
402 | - pid or -1 to monitor all pids | |
403 | - cpu number or -1 to monitor all cpus | |
404 | - The file descriptor of the group leader or -1 to create a group. | |
405 | - flags | |
406 | ||
407 | """ | |
408 | return self.syscall(ARCH.sc_perf_evt_open, ctypes.pointer(attr), | |
409 | ctypes.c_int(pid), ctypes.c_int(cpu), | |
410 | ctypes.c_int(group_fd), ctypes.c_long(flags)) | |
411 | ||
f9bc9e65 | 412 | def setup_event_attribute(self, trace_set, trace_point): |
fabc7128 JF |
413 | """Returns an initialized ctype perf_event_attr struct.""" |
414 | ||
f9bc9e65 JF |
415 | id_path = os.path.join(PATH_DEBUGFS_TRACING, 'events', trace_set, |
416 | trace_point, 'id') | |
417 | ||
418 | event_attr = perf_event_attr() | |
419 | event_attr.config = int(open(id_path).read()) | |
420 | return event_attr | |
421 | ||
f0cf040f JF |
422 | def setup_event(self, group, trace_cpu, trace_pid, trace_point, |
423 | trace_filter, trace_set): | |
fabc7128 JF |
424 | """Sets up the perf event in Linux. |
425 | ||
426 | Issues the syscall to register the event in the kernel and | |
427 | then sets the optional filter. | |
428 | ||
429 | """ | |
430 | ||
f9bc9e65 JF |
431 | event_attr = self.setup_event_attribute(trace_set, trace_point) |
432 | ||
fabc7128 | 433 | # First event will be group leader. |
f9bc9e65 | 434 | group_leader = -1 |
fabc7128 JF |
435 | |
436 | # All others have to pass the leader's descriptor instead. | |
f9bc9e65 JF |
437 | if group.events: |
438 | group_leader = group.events[0].fd | |
439 | ||
099a2dfc SR |
440 | fd = self.perf_event_open(event_attr, trace_pid, |
441 | trace_cpu, group_leader, 0) | |
f9bc9e65 JF |
442 | if fd == -1: |
443 | err = ctypes.get_errno() | |
444 | raise OSError(err, os.strerror(err), | |
445 | 'while calling sys_perf_event_open().') | |
446 | ||
447 | if trace_filter: | |
448 | fcntl.ioctl(fd, ARCH.ioctl_numbers['SET_FILTER'], | |
449 | trace_filter) | |
450 | ||
451 | self.fd = fd | |
452 | ||
453 | def enable(self): | |
fabc7128 JF |
454 | """Enables the trace event in the kernel. |
455 | ||
456 | Enabling the group leader makes reading counters from it and the | |
457 | events under it possible. | |
458 | ||
459 | """ | |
f9bc9e65 JF |
460 | fcntl.ioctl(self.fd, ARCH.ioctl_numbers['ENABLE'], 0) |
461 | ||
462 | def disable(self): | |
fabc7128 JF |
463 | """Disables the trace event in the kernel. |
464 | ||
465 | Disabling the group leader makes reading all counters under it | |
466 | impossible. | |
467 | ||
468 | """ | |
f9bc9e65 JF |
469 | fcntl.ioctl(self.fd, ARCH.ioctl_numbers['DISABLE'], 0) |
470 | ||
471 | def reset(self): | |
fabc7128 | 472 | """Resets the count of the trace event in the kernel.""" |
f9bc9e65 JF |
473 | fcntl.ioctl(self.fd, ARCH.ioctl_numbers['RESET'], 0) |
474 | ||
692c7f6d | 475 | |
099a2dfc SR |
476 | class Provider(object): |
477 | """Encapsulates functionalities used by all providers.""" | |
478 | @staticmethod | |
479 | def is_field_wanted(fields_filter, field): | |
480 | """Indicate whether field is valid according to fields_filter.""" | |
b74faa93 | 481 | if not fields_filter: |
099a2dfc SR |
482 | return True |
483 | return re.match(fields_filter, field) is not None | |
484 | ||
485 | @staticmethod | |
486 | def walkdir(path): | |
487 | """Returns os.walk() data for specified directory. | |
488 | ||
489 | As it is only a wrapper it returns the same 3-tuple of (dirpath, | |
490 | dirnames, filenames). | |
491 | """ | |
492 | return next(os.walk(path)) | |
493 | ||
494 | ||
495 | class TracepointProvider(Provider): | |
fabc7128 JF |
496 | """Data provider for the stats class. |
497 | ||
498 | Manages the events/groups from which it acquires its data. | |
499 | ||
500 | """ | |
c469117d | 501 | def __init__(self, pid, fields_filter): |
f9bc9e65 | 502 | self.group_leaders = [] |
099a2dfc | 503 | self.filters = self.get_filters() |
c469117d SR |
504 | self.update_fields(fields_filter) |
505 | self.pid = pid | |
f9bc9e65 | 506 | |
099a2dfc SR |
507 | @staticmethod |
508 | def get_filters(): | |
509 | """Returns a dict of trace events, their filter ids and | |
510 | the values that can be filtered. | |
511 | ||
512 | Trace events can be filtered for special values by setting a | |
513 | filter string via an ioctl. The string normally has the format | |
514 | identifier==value. For each filter a new event will be created, to | |
515 | be able to distinguish the events. | |
516 | ||
517 | """ | |
518 | filters = {} | |
519 | filters['kvm_userspace_exit'] = ('reason', USERSPACE_EXIT_REASONS) | |
520 | if ARCH.exit_reasons: | |
521 | filters['kvm_exit'] = ('exit_reason', ARCH.exit_reasons) | |
522 | return filters | |
523 | ||
f9bc9e65 | 524 | def get_available_fields(self): |
fabc7128 JF |
525 | """Returns a list of available event's of format 'event name(filter |
526 | name)'. | |
527 | ||
528 | All available events have directories under | |
529 | /sys/kernel/debug/tracing/events/ which export information | |
530 | about the specific event. Therefore, listing the dirs gives us | |
531 | a list of all available events. | |
532 | ||
533 | Some events like the vm exit reasons can be filtered for | |
534 | specific values. To take account for that, the routine below | |
535 | creates special fields with the following format: | |
536 | event name(filter name) | |
537 | ||
538 | """ | |
f9bc9e65 | 539 | path = os.path.join(PATH_DEBUGFS_TRACING, 'events', 'kvm') |
099a2dfc | 540 | fields = self.walkdir(path)[1] |
f9bc9e65 JF |
541 | extra = [] |
542 | for field in fields: | |
543 | if field in self.filters: | |
544 | filter_name_, filter_dicts = self.filters[field] | |
545 | for name in filter_dicts: | |
546 | extra.append(field + '(' + name + ')') | |
547 | fields += extra | |
548 | return fields | |
549 | ||
c469117d SR |
550 | def update_fields(self, fields_filter): |
551 | """Refresh fields, applying fields_filter""" | |
67c162b0 SR |
552 | self.fields = [field for field in self.get_available_fields() |
553 | if self.is_field_wanted(fields_filter, field)] | |
099a2dfc SR |
554 | |
555 | @staticmethod | |
556 | def get_online_cpus(): | |
557 | """Returns a list of cpu id integers.""" | |
558 | def parse_int_list(list_string): | |
559 | """Returns an int list from a string of comma separated integers and | |
560 | integer ranges.""" | |
561 | integers = [] | |
562 | members = list_string.split(',') | |
563 | ||
564 | for member in members: | |
565 | if '-' not in member: | |
566 | integers.append(int(member)) | |
567 | else: | |
568 | int_range = member.split('-') | |
569 | integers.extend(range(int(int_range[0]), | |
570 | int(int_range[1]) + 1)) | |
571 | ||
572 | return integers | |
573 | ||
574 | with open('/sys/devices/system/cpu/online') as cpu_list: | |
575 | cpu_string = cpu_list.readline() | |
576 | return parse_int_list(cpu_string) | |
c469117d | 577 | |
f9bc9e65 | 578 | def setup_traces(self): |
fabc7128 JF |
579 | """Creates all event and group objects needed to be able to retrieve |
580 | data.""" | |
a1836069 | 581 | fields = self.get_available_fields() |
f0cf040f JF |
582 | if self._pid > 0: |
583 | # Fetch list of all threads of the monitored pid, as qemu | |
584 | # starts a thread for each vcpu. | |
585 | path = os.path.join('/proc', str(self._pid), 'task') | |
099a2dfc | 586 | groupids = self.walkdir(path)[1] |
f0cf040f | 587 | else: |
099a2dfc | 588 | groupids = self.get_online_cpus() |
f9bc9e65 JF |
589 | |
590 | # The constant is needed as a buffer for python libs, std | |
591 | # streams and other files that the script opens. | |
a1836069 | 592 | newlim = len(groupids) * len(fields) + 50 |
f9bc9e65 JF |
593 | try: |
594 | softlim_, hardlim = resource.getrlimit(resource.RLIMIT_NOFILE) | |
595 | ||
596 | if hardlim < newlim: | |
597 | # Now we need CAP_SYS_RESOURCE, to increase the hard limit. | |
598 | resource.setrlimit(resource.RLIMIT_NOFILE, (newlim, newlim)) | |
599 | else: | |
600 | # Raising the soft limit is sufficient. | |
601 | resource.setrlimit(resource.RLIMIT_NOFILE, (newlim, hardlim)) | |
602 | ||
603 | except ValueError: | |
604 | sys.exit("NOFILE rlimit could not be raised to {0}".format(newlim)) | |
605 | ||
f0cf040f | 606 | for groupid in groupids: |
f9bc9e65 | 607 | group = Group() |
a1836069 | 608 | for name in fields: |
f9bc9e65 JF |
609 | tracepoint = name |
610 | tracefilter = None | |
611 | match = re.match(r'(.*)\((.*)\)', name) | |
612 | if match: | |
613 | tracepoint, sub = match.groups() | |
614 | tracefilter = ('%s==%d\0' % | |
615 | (self.filters[tracepoint][0], | |
616 | self.filters[tracepoint][1][sub])) | |
617 | ||
f0cf040f JF |
618 | # From perf_event_open(2): |
619 | # pid > 0 and cpu == -1 | |
620 | # This measures the specified process/thread on any CPU. | |
621 | # | |
622 | # pid == -1 and cpu >= 0 | |
623 | # This measures all processes/threads on the specified CPU. | |
624 | trace_cpu = groupid if self._pid == 0 else -1 | |
625 | trace_pid = int(groupid) if self._pid != 0 else -1 | |
626 | ||
f9bc9e65 JF |
627 | group.add_event(Event(name=name, |
628 | group=group, | |
f0cf040f JF |
629 | trace_cpu=trace_cpu, |
630 | trace_pid=trace_pid, | |
f9bc9e65 JF |
631 | trace_point=tracepoint, |
632 | trace_filter=tracefilter)) | |
f0cf040f | 633 | |
f9bc9e65 JF |
634 | self.group_leaders.append(group) |
635 | ||
f9bc9e65 JF |
636 | @property |
637 | def fields(self): | |
638 | return self._fields | |
639 | ||
640 | @fields.setter | |
641 | def fields(self, fields): | |
fabc7128 | 642 | """Enables/disables the (un)wanted events""" |
f9bc9e65 JF |
643 | self._fields = fields |
644 | for group in self.group_leaders: | |
645 | for index, event in enumerate(group.events): | |
646 | if event.name in fields: | |
647 | event.reset() | |
648 | event.enable() | |
649 | else: | |
650 | # Do not disable the group leader. | |
651 | # It would disable all of its events. | |
652 | if index != 0: | |
653 | event.disable() | |
654 | ||
f0cf040f JF |
655 | @property |
656 | def pid(self): | |
657 | return self._pid | |
658 | ||
659 | @pid.setter | |
660 | def pid(self, pid): | |
fabc7128 | 661 | """Changes the monitored pid by setting new traces.""" |
f0cf040f | 662 | self._pid = pid |
fabc7128 JF |
663 | # The garbage collector will get rid of all Event/Group |
664 | # objects and open files after removing the references. | |
f0cf040f JF |
665 | self.group_leaders = [] |
666 | self.setup_traces() | |
667 | self.fields = self._fields | |
668 | ||
5c1954d2 | 669 | def read(self, by_guest=0): |
fabc7128 | 670 | """Returns 'event name: current value' for all enabled events.""" |
f9bc9e65 JF |
671 | ret = defaultdict(int) |
672 | for group in self.group_leaders: | |
9cc5fbbb | 673 | for name, val in group.read().items(): |
f9bc9e65 JF |
674 | if name in self._fields: |
675 | ret[name] += val | |
676 | return ret | |
677 | ||
9f114a03 SR |
678 | def reset(self): |
679 | """Reset all field counters""" | |
680 | for group in self.group_leaders: | |
681 | for event in group.events: | |
682 | event.reset() | |
683 | ||
692c7f6d | 684 | |
099a2dfc | 685 | class DebugfsProvider(Provider): |
fabc7128 JF |
686 | """Provides data from the files that KVM creates in the kvm debugfs |
687 | folder.""" | |
ab7ef193 | 688 | def __init__(self, pid, fields_filter, include_past): |
c469117d | 689 | self.update_fields(fields_filter) |
9f114a03 | 690 | self._baseline = {} |
f0cf040f | 691 | self.do_read = True |
e0ba3876 | 692 | self.paths = [] |
c469117d | 693 | self.pid = pid |
ab7ef193 SR |
694 | if include_past: |
695 | self.restore() | |
f9bc9e65 JF |
696 | |
697 | def get_available_fields(self): | |
fabc7128 JF |
698 | """"Returns a list of available fields. |
699 | ||
700 | The fields are all available KVM debugfs files | |
701 | ||
702 | """ | |
099a2dfc | 703 | return self.walkdir(PATH_DEBUGFS_KVM)[2] |
f9bc9e65 | 704 | |
c469117d SR |
705 | def update_fields(self, fields_filter): |
706 | """Refresh fields, applying fields_filter""" | |
707 | self._fields = [field for field in self.get_available_fields() | |
099a2dfc | 708 | if self.is_field_wanted(fields_filter, field)] |
c469117d | 709 | |
f9bc9e65 JF |
710 | @property |
711 | def fields(self): | |
712 | return self._fields | |
713 | ||
714 | @fields.setter | |
715 | def fields(self, fields): | |
716 | self._fields = fields | |
9f114a03 | 717 | self.reset() |
f9bc9e65 | 718 | |
f0cf040f JF |
719 | @property |
720 | def pid(self): | |
721 | return self._pid | |
722 | ||
723 | @pid.setter | |
724 | def pid(self, pid): | |
c469117d | 725 | self._pid = pid |
f0cf040f | 726 | if pid != 0: |
099a2dfc | 727 | vms = self.walkdir(PATH_DEBUGFS_KVM)[1] |
f0cf040f JF |
728 | if len(vms) == 0: |
729 | self.do_read = False | |
730 | ||
731 | self.paths = filter(lambda x: "{}-".format(pid) in x, vms) | |
732 | ||
733 | else: | |
9f114a03 | 734 | self.paths = [] |
f0cf040f | 735 | self.do_read = True |
9f114a03 | 736 | self.reset() |
f0cf040f | 737 | |
5c1954d2 | 738 | def read(self, reset=0, by_guest=0): |
ab7ef193 SR |
739 | """Returns a dict with format:'file name / field -> current value'. |
740 | ||
741 | Parameter 'reset': | |
742 | 0 plain read | |
743 | 1 reset field counts to 0 | |
744 | 2 restore the original field counts | |
745 | ||
746 | """ | |
f0cf040f JF |
747 | results = {} |
748 | ||
749 | # If no debugfs filtering support is available, then don't read. | |
750 | if not self.do_read: | |
751 | return results | |
752 | ||
9f114a03 SR |
753 | paths = self.paths |
754 | if self._pid == 0: | |
755 | paths = [] | |
756 | for entry in os.walk(PATH_DEBUGFS_KVM): | |
757 | for dir in entry[1]: | |
758 | paths.append(dir) | |
759 | for path in paths: | |
f0cf040f | 760 | for field in self._fields: |
9f114a03 SR |
761 | value = self.read_field(field, path) |
762 | key = path + field | |
ab7ef193 | 763 | if reset == 1: |
9f114a03 | 764 | self._baseline[key] = value |
ab7ef193 SR |
765 | if reset == 2: |
766 | self._baseline[key] = 0 | |
9f114a03 SR |
767 | if self._baseline.get(key, -1) == -1: |
768 | self._baseline[key] = value | |
5c1954d2 SR |
769 | increment = (results.get(field, 0) + value - |
770 | self._baseline.get(key, 0)) | |
771 | if by_guest: | |
772 | pid = key.split('-')[0] | |
773 | if pid in results: | |
774 | results[pid] += increment | |
775 | else: | |
776 | results[pid] = increment | |
777 | else: | |
778 | results[field] = increment | |
f0cf040f JF |
779 | |
780 | return results | |
781 | ||
782 | def read_field(self, field, path): | |
783 | """Returns the value of a single field from a specific VM.""" | |
784 | try: | |
785 | return int(open(os.path.join(PATH_DEBUGFS_KVM, | |
786 | path, | |
787 | field)) | |
788 | .read()) | |
789 | except IOError: | |
790 | return 0 | |
f9bc9e65 | 791 | |
9f114a03 SR |
792 | def reset(self): |
793 | """Reset field counters""" | |
794 | self._baseline = {} | |
795 | self.read(1) | |
796 | ||
ab7ef193 SR |
797 | def restore(self): |
798 | """Reset field counters""" | |
799 | self._baseline = {} | |
800 | self.read(2) | |
801 | ||
692c7f6d | 802 | |
f9bc9e65 | 803 | class Stats(object): |
fabc7128 JF |
804 | """Manages the data providers and the data they provide. |
805 | ||
806 | It is used to set filters on the provider's data and collect all | |
807 | provider data. | |
808 | ||
809 | """ | |
c469117d | 810 | def __init__(self, options): |
099a2dfc | 811 | self.providers = self.get_providers(options) |
c469117d SR |
812 | self._pid_filter = options.pid |
813 | self._fields_filter = options.fields | |
f9bc9e65 | 814 | self.values = {} |
f9bc9e65 | 815 | |
099a2dfc SR |
816 | @staticmethod |
817 | def get_providers(options): | |
818 | """Returns a list of data providers depending on the passed options.""" | |
819 | providers = [] | |
820 | ||
821 | if options.debugfs: | |
ab7ef193 SR |
822 | providers.append(DebugfsProvider(options.pid, options.fields, |
823 | options.dbgfs_include_past)) | |
099a2dfc SR |
824 | if options.tracepoints or not providers: |
825 | providers.append(TracepointProvider(options.pid, options.fields)) | |
826 | ||
827 | return providers | |
828 | ||
f9bc9e65 | 829 | def update_provider_filters(self): |
fabc7128 | 830 | """Propagates fields filters to providers.""" |
f9bc9e65 JF |
831 | # As we reset the counters when updating the fields we can |
832 | # also clear the cache of old values. | |
833 | self.values = {} | |
834 | for provider in self.providers: | |
c469117d | 835 | provider.update_fields(self._fields_filter) |
f0cf040f | 836 | |
9f114a03 SR |
837 | def reset(self): |
838 | self.values = {} | |
839 | for provider in self.providers: | |
840 | provider.reset() | |
841 | ||
f9bc9e65 JF |
842 | @property |
843 | def fields_filter(self): | |
844 | return self._fields_filter | |
845 | ||
846 | @fields_filter.setter | |
847 | def fields_filter(self, fields_filter): | |
9f114a03 SR |
848 | if fields_filter != self._fields_filter: |
849 | self._fields_filter = fields_filter | |
850 | self.update_provider_filters() | |
f9bc9e65 | 851 | |
f0cf040f JF |
852 | @property |
853 | def pid_filter(self): | |
854 | return self._pid_filter | |
855 | ||
856 | @pid_filter.setter | |
857 | def pid_filter(self, pid): | |
9f114a03 SR |
858 | if pid != self._pid_filter: |
859 | self._pid_filter = pid | |
860 | self.values = {} | |
c469117d SR |
861 | for provider in self.providers: |
862 | provider.pid = self._pid_filter | |
f0cf040f | 863 | |
5c1954d2 | 864 | def get(self, by_guest=0): |
fabc7128 JF |
865 | """Returns a dict with field -> (value, delta to last value) of all |
866 | provider data.""" | |
f9bc9e65 | 867 | for provider in self.providers: |
5c1954d2 SR |
868 | new = provider.read(by_guest=by_guest) |
869 | for key in new if by_guest else provider.fields: | |
9f114a03 | 870 | oldval = self.values.get(key, (0, 0))[0] |
f9bc9e65 | 871 | newval = new.get(key, 0) |
9f114a03 | 872 | newdelta = newval - oldval |
f9bc9e65 JF |
873 | self.values[key] = (newval, newdelta) |
874 | return self.values | |
875 | ||
5c1954d2 SR |
876 | def toggle_display_guests(self, to_pid): |
877 | """Toggle between collection of stats by individual event and by | |
878 | guest pid | |
879 | ||
880 | Events reported by DebugfsProvider change when switching to/from | |
881 | reading by guest values. Hence we have to remove the excess event | |
882 | names from self.values. | |
883 | ||
884 | """ | |
885 | if any(isinstance(ins, TracepointProvider) for ins in self.providers): | |
886 | return 1 | |
887 | if to_pid: | |
888 | for provider in self.providers: | |
889 | if isinstance(provider, DebugfsProvider): | |
890 | for key in provider.fields: | |
891 | if key in self.values.keys(): | |
892 | del self.values[key] | |
893 | else: | |
894 | oldvals = self.values.copy() | |
895 | for key in oldvals: | |
896 | if key.isdigit(): | |
897 | del self.values[key] | |
898 | # Update oldval (see get()) | |
899 | self.get(to_pid) | |
900 | return 0 | |
901 | ||
64eefad2 | 902 | DELAY_DEFAULT = 3.0 |
a24e85f6 | 903 | MAX_GUEST_NAME_LEN = 48 |
72187dfa | 904 | MAX_REGEX_LEN = 44 |
4443084f | 905 | DEFAULT_REGEX = r'^[^\(]*$' |
6667ae8f | 906 | SORT_DEFAULT = 0 |
f9bc9e65 | 907 | |
692c7f6d | 908 | |
f9bc9e65 | 909 | class Tui(object): |
fabc7128 | 910 | """Instruments curses to draw a nice text ui.""" |
f9bc9e65 JF |
911 | def __init__(self, stats): |
912 | self.stats = stats | |
913 | self.screen = None | |
64eefad2 SR |
914 | self._delay_initial = 0.25 |
915 | self._delay_regular = DELAY_DEFAULT | |
6667ae8f | 916 | self._sorting = SORT_DEFAULT |
5c1954d2 | 917 | self._display_guests = 0 |
f9bc9e65 JF |
918 | |
919 | def __enter__(self): | |
920 | """Initialises curses for later use. Based on curses.wrapper | |
921 | implementation from the Python standard library.""" | |
922 | self.screen = curses.initscr() | |
923 | curses.noecho() | |
924 | curses.cbreak() | |
925 | ||
926 | # The try/catch works around a minor bit of | |
927 | # over-conscientiousness in the curses module, the error | |
928 | # return from C start_color() is ignorable. | |
929 | try: | |
930 | curses.start_color() | |
9fc0adfc | 931 | except curses.error: |
f9bc9e65 JF |
932 | pass |
933 | ||
a0b4e6a0 SR |
934 | # Hide cursor in extra statement as some monochrome terminals |
935 | # might support hiding but not colors. | |
936 | try: | |
937 | curses.curs_set(0) | |
938 | except curses.error: | |
939 | pass | |
940 | ||
f9bc9e65 JF |
941 | curses.use_default_colors() |
942 | return self | |
943 | ||
944 | def __exit__(self, *exception): | |
773bffee | 945 | """Resets the terminal to its normal state. Based on curses.wrapper |
f9bc9e65 JF |
946 | implementation from the Python standard library.""" |
947 | if self.screen: | |
948 | self.screen.keypad(0) | |
949 | curses.echo() | |
950 | curses.nocbreak() | |
951 | curses.endwin() | |
952 | ||
19e8e54f SR |
953 | @staticmethod |
954 | def get_all_gnames(): | |
865279c5 SR |
955 | """Returns a list of (pid, gname) tuples of all running guests""" |
956 | res = [] | |
099a2dfc SR |
957 | try: |
958 | child = subprocess.Popen(['ps', '-A', '--format', 'pid,args'], | |
959 | stdout=subprocess.PIPE) | |
960 | except: | |
961 | raise Exception | |
962 | for line in child.stdout: | |
9cc5fbbb | 963 | line = line.decode(ENCODING).lstrip().split(' ', 1) |
099a2dfc SR |
964 | # perform a sanity check before calling the more expensive |
965 | # function to possibly extract the guest name | |
865279c5 | 966 | if ' -name ' in line[1]: |
19e8e54f | 967 | res.append((line[0], Tui.get_gname_from_pid(line[0]))) |
099a2dfc SR |
968 | child.stdout.close() |
969 | ||
865279c5 SR |
970 | return res |
971 | ||
972 | def print_all_gnames(self, row): | |
973 | """Print a list of all running guests along with their pids.""" | |
974 | self.screen.addstr(row, 2, '%8s %-60s' % | |
975 | ('Pid', 'Guest Name (fuzzy list, might be ' | |
976 | 'inaccurate!)'), | |
977 | curses.A_UNDERLINE) | |
978 | row += 1 | |
979 | try: | |
980 | for line in self.get_all_gnames(): | |
981 | self.screen.addstr(row, 2, '%8s %-60s' % (line[0], line[1])) | |
982 | row += 1 | |
983 | if row >= self.screen.getmaxyx()[0]: | |
984 | break | |
985 | except Exception: | |
986 | self.screen.addstr(row + 1, 2, 'Not available') | |
987 | ||
19e8e54f SR |
988 | @staticmethod |
989 | def get_pid_from_gname(gname): | |
865279c5 SR |
990 | """Fuzzy function to convert guest name to QEMU process pid. |
991 | ||
992 | Returns a list of potential pids, can be empty if no match found. | |
993 | Throws an exception on processing errors. | |
994 | ||
995 | """ | |
996 | pids = [] | |
19e8e54f | 997 | for line in Tui.get_all_gnames(): |
865279c5 SR |
998 | if gname == line[1]: |
999 | pids.append(int(line[0])) | |
1000 | ||
099a2dfc SR |
1001 | return pids |
1002 | ||
1003 | @staticmethod | |
1004 | def get_gname_from_pid(pid): | |
1005 | """Returns the guest name for a QEMU process pid. | |
1006 | ||
1007 | Extracts the guest name from the QEMU comma line by processing the | |
1008 | '-name' option. Will also handle names specified out of sequence. | |
1009 | ||
1010 | """ | |
1011 | name = '' | |
1012 | try: | |
1013 | line = open('/proc/{}/cmdline' | |
9cc5fbbb | 1014 | .format(pid), 'r').read().split('\0') |
099a2dfc SR |
1015 | parms = line[line.index('-name') + 1].split(',') |
1016 | while '' in parms: | |
1017 | # commas are escaped (i.e. ',,'), hence e.g. 'foo,bar' results | |
1018 | # in # ['foo', '', 'bar'], which we revert here | |
1019 | idx = parms.index('') | |
1020 | parms[idx - 1] += ',' + parms[idx + 1] | |
1021 | del parms[idx:idx+2] | |
1022 | # the '-name' switch allows for two ways to specify the guest name, | |
1023 | # where the plain name overrides the name specified via 'guest=' | |
1024 | for arg in parms: | |
1025 | if '=' not in arg: | |
1026 | name = arg | |
1027 | break | |
1028 | if arg[:6] == 'guest=': | |
1029 | name = arg[6:] | |
1030 | except (ValueError, IOError, IndexError): | |
1031 | pass | |
1032 | ||
1033 | return name | |
1034 | ||
f9bc9e65 | 1035 | def update_drilldown(self): |
fabc7128 | 1036 | """Sets or removes a filter that only allows fields without braces.""" |
f9bc9e65 | 1037 | if not self.stats.fields_filter: |
4443084f | 1038 | self.stats.fields_filter = DEFAULT_REGEX |
f9bc9e65 | 1039 | |
4443084f | 1040 | elif self.stats.fields_filter == DEFAULT_REGEX: |
f9bc9e65 JF |
1041 | self.stats.fields_filter = None |
1042 | ||
f0cf040f | 1043 | def update_pid(self, pid): |
fabc7128 | 1044 | """Propagates pid selection to stats object.""" |
f0cf040f JF |
1045 | self.stats.pid_filter = pid |
1046 | ||
184b2d23 SR |
1047 | def refresh_header(self, pid=None): |
1048 | """Refreshes the header.""" | |
1049 | if pid is None: | |
1050 | pid = self.stats.pid_filter | |
f9bc9e65 | 1051 | self.screen.erase() |
099a2dfc | 1052 | gname = self.get_gname_from_pid(pid) |
a24e85f6 SR |
1053 | if gname: |
1054 | gname = ('({})'.format(gname[:MAX_GUEST_NAME_LEN] + '...' | |
1055 | if len(gname) > MAX_GUEST_NAME_LEN | |
1056 | else gname)) | |
184b2d23 | 1057 | if pid > 0: |
a24e85f6 SR |
1058 | self.screen.addstr(0, 0, 'kvm statistics - pid {0} {1}' |
1059 | .format(pid, gname), curses.A_BOLD) | |
f0cf040f JF |
1060 | else: |
1061 | self.screen.addstr(0, 0, 'kvm statistics - summary', curses.A_BOLD) | |
4443084f SR |
1062 | if self.stats.fields_filter and self.stats.fields_filter \ |
1063 | != DEFAULT_REGEX: | |
72187dfa SR |
1064 | regex = self.stats.fields_filter |
1065 | if len(regex) > MAX_REGEX_LEN: | |
1066 | regex = regex[:MAX_REGEX_LEN] + '...' | |
1067 | self.screen.addstr(1, 17, 'regex filter: {0}'.format(regex)) | |
5c1954d2 SR |
1068 | if self._display_guests: |
1069 | col_name = 'Guest Name' | |
1070 | else: | |
1071 | col_name = 'Event' | |
38e89c37 | 1072 | self.screen.addstr(2, 1, '%-40s %10s%7s %8s' % |
5c1954d2 | 1073 | (col_name, 'Total', '%Total', 'CurAvg/s'), |
f6d75310 | 1074 | curses.A_STANDOUT) |
184b2d23 SR |
1075 | self.screen.addstr(4, 1, 'Collecting data...') |
1076 | self.screen.refresh() | |
1077 | ||
1078 | def refresh_body(self, sleeptime): | |
f9bc9e65 | 1079 | row = 3 |
184b2d23 SR |
1080 | self.screen.move(row, 0) |
1081 | self.screen.clrtobot() | |
5c1954d2 | 1082 | stats = self.stats.get(self._display_guests) |
692c7f6d | 1083 | |
6667ae8f SR |
1084 | def sortCurAvg(x): |
1085 | # sort by current events if available | |
f9bc9e65 JF |
1086 | if stats[x][1]: |
1087 | return (-stats[x][1], -stats[x][0]) | |
1088 | else: | |
1089 | return (0, -stats[x][0]) | |
6667ae8f SR |
1090 | |
1091 | def sortTotal(x): | |
1092 | # sort by totals | |
1093 | return (0, -stats[x][0]) | |
e55fe3cc | 1094 | total = 0. |
fff8c9eb SR |
1095 | for key in stats.keys(): |
1096 | if key.find('(') is -1: | |
1097 | total += stats[key][0] | |
6667ae8f SR |
1098 | if self._sorting == SORT_DEFAULT: |
1099 | sortkey = sortCurAvg | |
1100 | else: | |
1101 | sortkey = sortTotal | |
cf656c76 | 1102 | tavg = 0 |
f9bc9e65 | 1103 | for key in sorted(stats.keys(), key=sortkey): |
cf656c76 | 1104 | if row >= self.screen.getmaxyx()[0] - 1: |
f9bc9e65 JF |
1105 | break |
1106 | values = stats[key] | |
1107 | if not values[0] and not values[1]: | |
1108 | break | |
5a7d11f8 SR |
1109 | if values[0] is not None: |
1110 | cur = int(round(values[1] / sleeptime)) if values[1] else '' | |
5c1954d2 SR |
1111 | if self._display_guests: |
1112 | key = self.get_gname_from_pid(key) | |
38e89c37 | 1113 | self.screen.addstr(row, 1, '%-40s %10d%7.1f %8s' % |
5a7d11f8 SR |
1114 | (key, values[0], values[0] * 100 / total, |
1115 | cur)) | |
cf656c76 SR |
1116 | if cur is not '' and key.find('(') is -1: |
1117 | tavg += cur | |
f9bc9e65 | 1118 | row += 1 |
57253937 SR |
1119 | if row == 3: |
1120 | self.screen.addstr(4, 1, 'No matching events reported yet') | |
cf656c76 SR |
1121 | else: |
1122 | self.screen.addstr(row, 1, '%-40s %10d %8s' % | |
1123 | ('Total', total, tavg if tavg else ''), | |
1124 | curses.A_BOLD) | |
f9bc9e65 JF |
1125 | self.screen.refresh() |
1126 | ||
5c1954d2 SR |
1127 | def show_msg(self, text): |
1128 | """Display message centered text and exit on key press""" | |
1129 | hint = 'Press any key to continue' | |
1130 | curses.cbreak() | |
1131 | self.screen.erase() | |
1132 | (x, term_width) = self.screen.getmaxyx() | |
1133 | row = 2 | |
1134 | for line in text: | |
1135 | start = (term_width - len(line)) / 2 | |
1136 | self.screen.addstr(row, start, line) | |
1137 | row += 1 | |
1138 | self.screen.addstr(row + 1, (term_width - len(hint)) / 2, hint, | |
1139 | curses.A_STANDOUT) | |
1140 | self.screen.getkey() | |
1141 | ||
1fdea7b2 SR |
1142 | def show_help_interactive(self): |
1143 | """Display help with list of interactive commands""" | |
5c1954d2 SR |
1144 | msg = (' b toggle events by guests (debugfs only, honors' |
1145 | ' filters)', | |
1146 | ' c clear filter', | |
1fdea7b2 SR |
1147 | ' f filter by regular expression', |
1148 | ' g filter by guest name', | |
1149 | ' h display interactive commands reference', | |
6667ae8f | 1150 | ' o toggle sorting order (Total vs CurAvg/s)', |
1fdea7b2 SR |
1151 | ' p filter by PID', |
1152 | ' q quit', | |
1153 | ' r reset stats', | |
64eefad2 | 1154 | ' s set update interval', |
1fdea7b2 SR |
1155 | ' x toggle reporting of stats for individual child trace' |
1156 | ' events', | |
1157 | 'Any other key refreshes statistics immediately') | |
1158 | curses.cbreak() | |
1159 | self.screen.erase() | |
1160 | self.screen.addstr(0, 0, "Interactive commands reference", | |
1161 | curses.A_BOLD) | |
1162 | self.screen.addstr(2, 0, "Press any key to exit", curses.A_STANDOUT) | |
1163 | row = 4 | |
1164 | for line in msg: | |
1165 | self.screen.addstr(row, 0, line) | |
1166 | row += 1 | |
1167 | self.screen.getkey() | |
1168 | self.refresh_header() | |
1169 | ||
f9bc9e65 | 1170 | def show_filter_selection(self): |
fabc7128 JF |
1171 | """Draws filter selection mask. |
1172 | ||
1173 | Asks for a valid regex and sets the fields filter accordingly. | |
1174 | ||
1175 | """ | |
f9bc9e65 JF |
1176 | while True: |
1177 | self.screen.erase() | |
1178 | self.screen.addstr(0, 0, | |
1179 | "Show statistics for events matching a regex.", | |
1180 | curses.A_BOLD) | |
1181 | self.screen.addstr(2, 0, | |
1182 | "Current regex: {0}" | |
1183 | .format(self.stats.fields_filter)) | |
1184 | self.screen.addstr(3, 0, "New regex: ") | |
1185 | curses.echo() | |
9cc5fbbb | 1186 | regex = self.screen.getstr().decode(ENCODING) |
f9bc9e65 JF |
1187 | curses.noecho() |
1188 | if len(regex) == 0: | |
4443084f | 1189 | self.stats.fields_filter = DEFAULT_REGEX |
184b2d23 | 1190 | self.refresh_header() |
f9bc9e65 JF |
1191 | return |
1192 | try: | |
1193 | re.compile(regex) | |
1194 | self.stats.fields_filter = regex | |
184b2d23 | 1195 | self.refresh_header() |
f9bc9e65 JF |
1196 | return |
1197 | except re.error: | |
1198 | continue | |
1199 | ||
f9ff1087 | 1200 | def show_vm_selection_by_pid(self): |
fabc7128 JF |
1201 | """Draws PID selection mask. |
1202 | ||
1203 | Asks for a pid until a valid pid or 0 has been entered. | |
1204 | ||
1205 | """ | |
0152c20f | 1206 | msg = '' |
f0cf040f JF |
1207 | while True: |
1208 | self.screen.erase() | |
1209 | self.screen.addstr(0, 0, | |
1210 | 'Show statistics for specific pid.', | |
1211 | curses.A_BOLD) | |
1212 | self.screen.addstr(1, 0, | |
1213 | 'This might limit the shown data to the trace ' | |
1214 | 'statistics.') | |
0152c20f | 1215 | self.screen.addstr(5, 0, msg) |
865279c5 | 1216 | self.print_all_gnames(7) |
f0cf040f JF |
1217 | |
1218 | curses.echo() | |
1219 | self.screen.addstr(3, 0, "Pid [0 or pid]: ") | |
9cc5fbbb | 1220 | pid = self.screen.getstr().decode(ENCODING) |
f0cf040f JF |
1221 | curses.noecho() |
1222 | ||
1223 | try: | |
be03ea3b SR |
1224 | if len(pid) > 0: |
1225 | pid = int(pid) | |
1226 | if pid != 0 and not os.path.isdir(os.path.join('/proc/', | |
1227 | str(pid))): | |
0152c20f | 1228 | msg = '"' + str(pid) + '": Not a running process' |
be03ea3b SR |
1229 | continue |
1230 | else: | |
1231 | pid = 0 | |
184b2d23 SR |
1232 | self.refresh_header(pid) |
1233 | self.update_pid(pid) | |
1234 | break | |
f0cf040f | 1235 | except ValueError: |
0152c20f | 1236 | msg = '"' + str(pid) + '": Not a valid pid' |
f0cf040f | 1237 | |
64eefad2 SR |
1238 | def show_set_update_interval(self): |
1239 | """Draws update interval selection mask.""" | |
1240 | msg = '' | |
1241 | while True: | |
1242 | self.screen.erase() | |
1243 | self.screen.addstr(0, 0, 'Set update interval (defaults to %fs).' % | |
1244 | DELAY_DEFAULT, curses.A_BOLD) | |
1245 | self.screen.addstr(4, 0, msg) | |
1246 | self.screen.addstr(2, 0, 'Change delay from %.1fs to ' % | |
1247 | self._delay_regular) | |
1248 | curses.echo() | |
9cc5fbbb | 1249 | val = self.screen.getstr().decode(ENCODING) |
64eefad2 SR |
1250 | curses.noecho() |
1251 | ||
1252 | try: | |
1253 | if len(val) > 0: | |
1254 | delay = float(val) | |
1255 | if delay < 0.1: | |
1256 | msg = '"' + str(val) + '": Value must be >=0.1' | |
1257 | continue | |
1258 | if delay > 25.5: | |
1259 | msg = '"' + str(val) + '": Value must be <=25.5' | |
1260 | continue | |
1261 | else: | |
1262 | delay = DELAY_DEFAULT | |
1263 | self._delay_regular = delay | |
1264 | break | |
1265 | ||
1266 | except ValueError: | |
1267 | msg = '"' + str(val) + '": Invalid value' | |
1268 | self.refresh_header() | |
1269 | ||
f9ff1087 SR |
1270 | def show_vm_selection_by_guest_name(self): |
1271 | """Draws guest selection mask. | |
1272 | ||
1273 | Asks for a guest name until a valid guest name or '' is entered. | |
1274 | ||
1275 | """ | |
1276 | msg = '' | |
1277 | while True: | |
1278 | self.screen.erase() | |
1279 | self.screen.addstr(0, 0, | |
1280 | 'Show statistics for specific guest.', | |
1281 | curses.A_BOLD) | |
1282 | self.screen.addstr(1, 0, | |
1283 | 'This might limit the shown data to the trace ' | |
1284 | 'statistics.') | |
1285 | self.screen.addstr(5, 0, msg) | |
61f381bb | 1286 | self.print_all_gnames(7) |
f9ff1087 SR |
1287 | curses.echo() |
1288 | self.screen.addstr(3, 0, "Guest [ENTER or guest]: ") | |
9cc5fbbb | 1289 | gname = self.screen.getstr().decode(ENCODING) |
f9ff1087 SR |
1290 | curses.noecho() |
1291 | ||
1292 | if not gname: | |
1293 | self.refresh_header(0) | |
1294 | self.update_pid(0) | |
1295 | break | |
1296 | else: | |
1297 | pids = [] | |
1298 | try: | |
099a2dfc | 1299 | pids = self.get_pid_from_gname(gname) |
f9ff1087 SR |
1300 | except: |
1301 | msg = '"' + gname + '": Internal error while searching, ' \ | |
1302 | 'use pid filter instead' | |
1303 | continue | |
1304 | if len(pids) == 0: | |
1305 | msg = '"' + gname + '": Not an active guest' | |
1306 | continue | |
1307 | if len(pids) > 1: | |
1308 | msg = '"' + gname + '": Multiple matches found, use pid ' \ | |
1309 | 'filter instead' | |
1310 | continue | |
1311 | self.refresh_header(pids[0]) | |
1312 | self.update_pid(pids[0]) | |
1313 | break | |
1314 | ||
f9bc9e65 | 1315 | def show_stats(self): |
fabc7128 | 1316 | """Refreshes the screen and processes user input.""" |
64eefad2 | 1317 | sleeptime = self._delay_initial |
184b2d23 | 1318 | self.refresh_header() |
124c2fc9 | 1319 | start = 0.0 # result based on init value never appears on screen |
f9bc9e65 | 1320 | while True: |
124c2fc9 | 1321 | self.refresh_body(time.time() - start) |
f9bc9e65 | 1322 | curses.halfdelay(int(sleeptime * 10)) |
124c2fc9 | 1323 | start = time.time() |
64eefad2 | 1324 | sleeptime = self._delay_regular |
f9bc9e65 JF |
1325 | try: |
1326 | char = self.screen.getkey() | |
5c1954d2 SR |
1327 | if char == 'b': |
1328 | self._display_guests = not self._display_guests | |
1329 | if self.stats.toggle_display_guests(self._display_guests): | |
1330 | self.show_msg(['Command not available with tracepoints' | |
1331 | ' enabled', 'Restart with debugfs only ' | |
1332 | '(see option \'-d\') and try again!']) | |
1333 | self._display_guests = not self._display_guests | |
1334 | self.refresh_header() | |
4443084f SR |
1335 | if char == 'c': |
1336 | self.stats.fields_filter = DEFAULT_REGEX | |
1337 | self.refresh_header(0) | |
1338 | self.update_pid(0) | |
f9bc9e65 | 1339 | if char == 'f': |
62d1b6cc | 1340 | curses.curs_set(1) |
f9bc9e65 | 1341 | self.show_filter_selection() |
62d1b6cc | 1342 | curses.curs_set(0) |
64eefad2 | 1343 | sleeptime = self._delay_initial |
f9ff1087 | 1344 | if char == 'g': |
62d1b6cc | 1345 | curses.curs_set(1) |
f9ff1087 | 1346 | self.show_vm_selection_by_guest_name() |
62d1b6cc | 1347 | curses.curs_set(0) |
64eefad2 | 1348 | sleeptime = self._delay_initial |
1fdea7b2 SR |
1349 | if char == 'h': |
1350 | self.show_help_interactive() | |
6667ae8f SR |
1351 | if char == 'o': |
1352 | self._sorting = not self._sorting | |
f0cf040f | 1353 | if char == 'p': |
62d1b6cc | 1354 | curses.curs_set(1) |
f9ff1087 | 1355 | self.show_vm_selection_by_pid() |
62d1b6cc | 1356 | curses.curs_set(0) |
64eefad2 | 1357 | sleeptime = self._delay_initial |
1fdea7b2 SR |
1358 | if char == 'q': |
1359 | break | |
9f114a03 | 1360 | if char == 'r': |
9f114a03 | 1361 | self.stats.reset() |
64eefad2 SR |
1362 | if char == 's': |
1363 | curses.curs_set(1) | |
1364 | self.show_set_update_interval() | |
1365 | curses.curs_set(0) | |
1366 | sleeptime = self._delay_initial | |
1fdea7b2 SR |
1367 | if char == 'x': |
1368 | self.update_drilldown() | |
ab7ef193 | 1369 | # prevents display of current values on next refresh |
faa06650 | 1370 | self.stats.get(self._display_guests) |
f9bc9e65 JF |
1371 | except KeyboardInterrupt: |
1372 | break | |
1373 | except curses.error: | |
1374 | continue | |
1375 | ||
692c7f6d | 1376 | |
f9bc9e65 | 1377 | def batch(stats): |
fabc7128 | 1378 | """Prints statistics in a key, value format.""" |
dadf1e78 SR |
1379 | try: |
1380 | s = stats.get() | |
1381 | time.sleep(1) | |
1382 | s = stats.get() | |
1383 | for key in sorted(s.keys()): | |
1384 | values = s[key] | |
9cc5fbbb | 1385 | print('%-42s%10d%10d' % (key, values[0], values[1])) |
dadf1e78 SR |
1386 | except KeyboardInterrupt: |
1387 | pass | |
f9bc9e65 | 1388 | |
692c7f6d | 1389 | |
f9bc9e65 | 1390 | def log(stats): |
fabc7128 | 1391 | """Prints statistics as reiterating key block, multiple value blocks.""" |
9cc5fbbb | 1392 | keys = sorted(stats.get().keys()) |
692c7f6d | 1393 | |
f9bc9e65 JF |
1394 | def banner(): |
1395 | for k in keys: | |
9cc5fbbb JC |
1396 | print(k, end=' ') |
1397 | print() | |
692c7f6d | 1398 | |
f9bc9e65 JF |
1399 | def statline(): |
1400 | s = stats.get() | |
1401 | for k in keys: | |
9cc5fbbb JC |
1402 | print(' %9d' % s[k][1], end=' ') |
1403 | print() | |
f9bc9e65 JF |
1404 | line = 0 |
1405 | banner_repeat = 20 | |
1406 | while True: | |
dadf1e78 SR |
1407 | try: |
1408 | time.sleep(1) | |
1409 | if line % banner_repeat == 0: | |
1410 | banner() | |
1411 | statline() | |
1412 | line += 1 | |
1413 | except KeyboardInterrupt: | |
1414 | break | |
f9bc9e65 | 1415 | |
692c7f6d | 1416 | |
f9bc9e65 | 1417 | def get_options(): |
fabc7128 | 1418 | """Returns processed program arguments.""" |
f9bc9e65 JF |
1419 | description_text = """ |
1420 | This script displays various statistics about VMs running under KVM. | |
1421 | The statistics are gathered from the KVM debugfs entries and / or the | |
1422 | currently available perf traces. | |
1423 | ||
1424 | The monitoring takes additional cpu cycles and might affect the VM's | |
1425 | performance. | |
1426 | ||
1427 | Requirements: | |
1428 | - Access to: | |
efcb5219 LM |
1429 | %s |
1430 | %s/events/* | |
f9bc9e65 JF |
1431 | /proc/pid/task |
1432 | - /proc/sys/kernel/perf_event_paranoid < 1 if user has no | |
1433 | CAP_SYS_ADMIN and perf events are used. | |
1434 | - CAP_SYS_RESOURCE if the hard limit is not high enough to allow | |
1435 | the large number of files that are possibly opened. | |
1eaa2f90 SR |
1436 | |
1437 | Interactive Commands: | |
5c1954d2 | 1438 | b toggle events by guests (debugfs only, honors filters) |
4443084f | 1439 | c clear filter |
1eaa2f90 | 1440 | f filter by regular expression |
f9ff1087 | 1441 | g filter by guest name |
1fdea7b2 | 1442 | h display interactive commands reference |
6667ae8f | 1443 | o toggle sorting order (Total vs CurAvg/s) |
1eaa2f90 SR |
1444 | p filter by PID |
1445 | q quit | |
9f114a03 | 1446 | r reset stats |
64eefad2 | 1447 | s set update interval |
1fdea7b2 | 1448 | x toggle reporting of stats for individual child trace events |
1eaa2f90 | 1449 | Press any other key to refresh statistics immediately. |
efcb5219 | 1450 | """ % (PATH_DEBUGFS_KVM, PATH_DEBUGFS_TRACING) |
f9bc9e65 JF |
1451 | |
1452 | class PlainHelpFormatter(optparse.IndentedHelpFormatter): | |
1453 | def format_description(self, description): | |
1454 | if description: | |
1455 | return description + "\n" | |
1456 | else: | |
1457 | return "" | |
1458 | ||
f9ff1087 SR |
1459 | def cb_guest_to_pid(option, opt, val, parser): |
1460 | try: | |
099a2dfc | 1461 | pids = Tui.get_pid_from_gname(val) |
f9ff1087 | 1462 | except: |
822cfe3e SR |
1463 | sys.exit('Error while searching for guest "{}". Use "-p" to ' |
1464 | 'specify a pid instead?'.format(val)) | |
f9ff1087 | 1465 | if len(pids) == 0: |
822cfe3e | 1466 | sys.exit('Error: No guest by the name "{}" found'.format(val)) |
f9ff1087 | 1467 | if len(pids) > 1: |
822cfe3e SR |
1468 | sys.exit('Error: Multiple processes found (pids: {}). Use "-p" ' |
1469 | 'to specify the desired pid'.format(" ".join(pids))) | |
f9ff1087 SR |
1470 | parser.values.pid = pids[0] |
1471 | ||
f9bc9e65 JF |
1472 | optparser = optparse.OptionParser(description=description_text, |
1473 | formatter=PlainHelpFormatter()) | |
1474 | optparser.add_option('-1', '--once', '--batch', | |
1475 | action='store_true', | |
1476 | default=False, | |
1477 | dest='once', | |
1478 | help='run in batch mode for one second', | |
1479 | ) | |
ab7ef193 SR |
1480 | optparser.add_option('-i', '--debugfs-include-past', |
1481 | action='store_true', | |
1482 | default=False, | |
1483 | dest='dbgfs_include_past', | |
1484 | help='include all available data on past events for ' | |
1485 | 'debugfs', | |
1486 | ) | |
f9bc9e65 JF |
1487 | optparser.add_option('-l', '--log', |
1488 | action='store_true', | |
1489 | default=False, | |
1490 | dest='log', | |
1491 | help='run in logging mode (like vmstat)', | |
1492 | ) | |
1493 | optparser.add_option('-t', '--tracepoints', | |
1494 | action='store_true', | |
1495 | default=False, | |
1496 | dest='tracepoints', | |
1497 | help='retrieve statistics from tracepoints', | |
1498 | ) | |
1499 | optparser.add_option('-d', '--debugfs', | |
1500 | action='store_true', | |
1501 | default=False, | |
1502 | dest='debugfs', | |
1503 | help='retrieve statistics from debugfs', | |
1504 | ) | |
1505 | optparser.add_option('-f', '--fields', | |
1506 | action='store', | |
c469117d | 1507 | default=DEFAULT_REGEX, |
f9bc9e65 | 1508 | dest='fields', |
67fbcd62 LM |
1509 | help='''fields to display (regex) |
1510 | "-f help" for a list of available events''', | |
f9bc9e65 | 1511 | ) |
f0cf040f | 1512 | optparser.add_option('-p', '--pid', |
e0ba3876 SR |
1513 | action='store', |
1514 | default=0, | |
1515 | type='int', | |
1516 | dest='pid', | |
1517 | help='restrict statistics to pid', | |
1518 | ) | |
f9ff1087 SR |
1519 | optparser.add_option('-g', '--guest', |
1520 | action='callback', | |
1521 | type='string', | |
1522 | dest='pid', | |
1523 | metavar='GUEST', | |
1524 | help='restrict statistics to guest by name', | |
1525 | callback=cb_guest_to_pid, | |
1526 | ) | |
73fab6ff SR |
1527 | options, unkn = optparser.parse_args(sys.argv) |
1528 | if len(unkn) != 1: | |
1529 | sys.exit('Error: Extra argument(s): ' + ' '.join(unkn[1:])) | |
08e20a63 SR |
1530 | try: |
1531 | # verify that we were passed a valid regex up front | |
1532 | re.compile(options.fields) | |
1533 | except re.error: | |
1534 | sys.exit('Error: "' + options.fields + '" is not a valid regular ' | |
1535 | 'expression') | |
1536 | ||
f9bc9e65 JF |
1537 | return options |
1538 | ||
692c7f6d | 1539 | |
f9bc9e65 | 1540 | def check_access(options): |
fabc7128 | 1541 | """Exits if the current user can't access all needed directories.""" |
f9bc9e65 JF |
1542 | if not os.path.exists('/sys/kernel/debug'): |
1543 | sys.stderr.write('Please enable CONFIG_DEBUG_FS in your kernel.') | |
1544 | sys.exit(1) | |
1545 | ||
1546 | if not os.path.exists(PATH_DEBUGFS_KVM): | |
1547 | sys.stderr.write("Please make sure, that debugfs is mounted and " | |
1548 | "readable by the current user:\n" | |
1549 | "('mount -t debugfs debugfs /sys/kernel/debug')\n" | |
1550 | "Also ensure, that the kvm modules are loaded.\n") | |
1551 | sys.exit(1) | |
1552 | ||
e0ba3876 SR |
1553 | if not os.path.exists(PATH_DEBUGFS_TRACING) and (options.tracepoints or |
1554 | not options.debugfs): | |
f9bc9e65 JF |
1555 | sys.stderr.write("Please enable CONFIG_TRACING in your kernel " |
1556 | "when using the option -t (default).\n" | |
1557 | "If it is enabled, make {0} readable by the " | |
1558 | "current user.\n" | |
1559 | .format(PATH_DEBUGFS_TRACING)) | |
1560 | if options.tracepoints: | |
1561 | sys.exit(1) | |
1562 | ||
1563 | sys.stderr.write("Falling back to debugfs statistics!\n") | |
1564 | options.debugfs = True | |
e0ba3876 | 1565 | time.sleep(5) |
f9bc9e65 JF |
1566 | |
1567 | return options | |
1568 | ||
692c7f6d | 1569 | |
f9bc9e65 JF |
1570 | def main(): |
1571 | options = get_options() | |
1572 | options = check_access(options) | |
f0cf040f JF |
1573 | |
1574 | if (options.pid > 0 and | |
1575 | not os.path.isdir(os.path.join('/proc/', | |
1576 | str(options.pid)))): | |
1577 | sys.stderr.write('Did you use a (unsupported) tid instead of a pid?\n') | |
1578 | sys.exit('Specified pid does not exist.') | |
1579 | ||
c469117d | 1580 | stats = Stats(options) |
f9bc9e65 | 1581 | |
aa12f594 | 1582 | if options.fields == 'help': |
b74faa93 | 1583 | stats.fields_filter = None |
aa12f594 SR |
1584 | event_list = [] |
1585 | for key in stats.get().keys(): | |
1586 | event_list.append(key.split('(', 1)[0]) | |
1587 | sys.stdout.write(' ' + '\n '.join(sorted(set(event_list))) + '\n') | |
1588 | sys.exit(0) | |
67fbcd62 | 1589 | |
f9bc9e65 JF |
1590 | if options.log: |
1591 | log(stats) | |
1592 | elif not options.once: | |
1593 | with Tui(stats) as tui: | |
1594 | tui.show_stats() | |
1595 | else: | |
1596 | batch(stats) | |
1597 | ||
1598 | if __name__ == "__main__": | |
1599 | main() |