Commit | Line | Data |
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63eba147 JA |
1 | /* |
2 | * blktrace output analysis: generate a timeline & gather statistics | |
3 | * | |
4 | * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include <assert.h> | |
22 | #include <stdio.h> | |
23 | #include <string.h> | |
6eb42155 | 24 | #include <time.h> |
63eba147 JA |
25 | |
26 | #include "blktrace.h" | |
6eb42155 | 27 | #include "rbtree.h" |
63eba147 JA |
28 | #include "list.h" |
29 | ||
fa0ab85d AB |
30 | /* |
31 | * 0 == 1 blk | |
32 | * 1 == 2 blks | |
33 | * ... | |
34 | * 1022 == 1023 blks | |
35 | * 1023 == 1024 blks | |
36 | * 1024 == > 1024 blks | |
37 | */ | |
38 | #define N_HIST_BKTS 1025 | |
39 | ||
63eba147 JA |
40 | #define BIT_TIME(t) ((double)SECONDS(t) + ((double)NANO_SECONDS(t) / 1.0e9)) |
41 | ||
42 | #define BIT_START(iop) ((iop)->t.sector) | |
43 | #define BIT_END(iop) ((iop)->t.sector + ((iop)->t.bytes >> 9)) | |
5225e788 | 44 | #define IOP_READ(iop) ((iop)->t.action & BLK_TC_ACT(BLK_TC_READ)) |
21e47d90 | 45 | #define IOP_RW(iop) (IOP_READ(iop) ? 1 : 0) |
63eba147 | 46 | |
b2ecdd0f ADB |
47 | #define TO_SEC(nanosec) ((double)(nanosec) / 1.0e9) |
48 | #define TO_MSEC(nanosec) (1000.0 * TO_SEC(nanosec)) | |
49 | ||
63eba147 | 50 | #if defined(DEBUG) |
6eb42155 | 51 | #define DBG_PING() dbg_ping() |
63eba147 JA |
52 | #define ASSERT(truth) do { \ |
53 | if (!(truth)) { \ | |
54 | DBG_PING(); \ | |
55 | assert(truth); \ | |
56 | } \ | |
57 | } while (0) | |
58 | ||
63eba147 JA |
59 | |
60 | #define LIST_DEL(hp) list_del(hp) | |
63eba147 JA |
61 | #else |
62 | #define ASSERT(truth) | |
63 | #define DBG_PING() | |
63eba147 | 64 | #define LIST_DEL(hp) do { \ |
d76c5b81 AB |
65 | ASSERT((hp)->next != NULL); \ |
66 | ASSERT(!list_empty(hp)); \ | |
67 | list_del(hp); \ | |
63eba147 JA |
68 | } while (0) |
69 | #endif | |
70 | ||
63eba147 JA |
71 | enum iop_type { |
72 | IOP_Q = 0, | |
73 | IOP_X = 1, | |
74 | IOP_A = 2, | |
4c48f14e | 75 | IOP_G = 3, |
095181f2 | 76 | IOP_M = 4, |
d76c5b81 AB |
77 | IOP_D = 5, |
78 | IOP_C = 6, | |
79 | IOP_R = 7, | |
4c48f14e | 80 | IOP_I = 8 |
63eba147 | 81 | }; |
4c48f14e | 82 | #define N_IOP_TYPES (IOP_I + 1) |
63eba147 | 83 | |
b2ecdd0f ADB |
84 | struct file_info { |
85 | struct file_info *next; | |
86 | FILE *ofp; | |
69040794 | 87 | char *oname; |
b2ecdd0f ADB |
88 | }; |
89 | ||
6eb42155 ADB |
90 | struct mode { |
91 | int most_seeks, nmds; | |
92 | long long *modes; | |
63eba147 JA |
93 | }; |
94 | ||
95 | struct io; | |
96 | struct io_list { | |
97 | struct list_head head; | |
98 | struct io *iop; | |
99 | int cy_users; | |
100 | }; | |
101 | ||
102 | struct avg_info { | |
103 | __u64 min, max, total; | |
104 | double avg; | |
105 | int n; | |
106 | }; | |
107 | ||
108 | struct avgs_info { | |
109 | struct avg_info q2q; | |
110 | struct avg_info q2c; | |
111 | struct avg_info q2a; /* Q to (A or X) */ | |
112 | struct avg_info q2i; /* Q to (I or M) */ | |
113 | struct avg_info i2d; /* (I or M) to D */ | |
114 | struct avg_info d2c; | |
115 | ||
116 | struct avg_info blks; /* Blocks transferred */ | |
117 | }; | |
118 | ||
119 | struct range_info { | |
120 | struct list_head head; /* on: qranges OR cranges */ | |
121 | __u64 start, end; | |
122 | }; | |
123 | ||
124 | struct region_info { | |
125 | struct list_head qranges; | |
126 | struct list_head cranges; | |
63eba147 JA |
127 | }; |
128 | ||
63eba147 | 129 | struct p_info { |
63eba147 JA |
130 | struct region_info regions; |
131 | struct avgs_info avgs; | |
63eba147 | 132 | __u64 last_q; |
6eb42155 | 133 | __u32 pid; |
69040794 | 134 | char *name; |
63eba147 JA |
135 | }; |
136 | ||
137 | struct devmap { | |
138 | struct devmap *next; | |
6eb42155 | 139 | unsigned int host, bus, target, lun, irq, cpu; |
63eba147 | 140 | char model[64]; |
6eb42155 | 141 | char device[32], node[32], pci[32], devno[32]; |
63eba147 JA |
142 | }; |
143 | ||
21e47d90 | 144 | struct stats { |
6eb42155 | 145 | __u64 rqm[2], ios[2], sec[2], wait, svctm; |
21e47d90 | 146 | double last_qu_change, last_dev_change, tot_qusz, idle_time; |
6eb42155 | 147 | int cur_qusz, cur_dev; |
21e47d90 ADB |
148 | }; |
149 | ||
4a5cddba JA |
150 | struct stats_t { |
151 | double n; | |
152 | double rqm_s[2], ios_s[2], sec_s[2]; | |
153 | double avgrq_sz, avgqu_sz, await, svctm, p_util; | |
154 | }; | |
155 | ||
63eba147 | 156 | struct d_info { |
6eb42155 ADB |
157 | struct list_head all_head, hash_head; |
158 | void *heads; | |
63eba147 | 159 | struct region_info regions; |
63eba147 | 160 | struct devmap *map; |
4c48f14e | 161 | void *q2q_handle, *seek_handle, *bno_dump_handle, *unplug_hist_handle; |
951ea56c | 162 | void *q2d_priv; |
b2ecdd0f | 163 | FILE *d2c_ofp, *q2c_ofp; |
6eb42155 | 164 | struct avgs_info avgs; |
21e47d90 | 165 | struct stats stats, all_stats; |
77f256cd | 166 | __u64 last_q, n_qs, n_ds; |
50f73899 | 167 | __u64 n_act_q, t_act_q; /* # currently active when Q comes in */ |
6eb42155 | 168 | __u32 device; |
b2822cea | 169 | |
11997716 | 170 | int pre_culling; |
b2822cea AB |
171 | int is_plugged, nplugs, n_timer_unplugs; |
172 | double start_time, last_plug, plugged_time, end_time; | |
63eba147 JA |
173 | }; |
174 | ||
175 | struct io { | |
6eb42155 | 176 | struct rb_node rb_node; |
4c48f14e | 177 | struct list_head f_head; |
63eba147 JA |
178 | struct d_info *dip; |
179 | struct p_info *pip; | |
6eb42155 | 180 | void *pdu; |
4c48f14e AB |
181 | __u64 bytes_left, i_time, gm_time, d_time, c_time, d_sec, c_sec; |
182 | __u32 d_nsec, c_nsec; | |
183 | ||
d76c5b81 | 184 | struct blk_io_trace t; |
4c48f14e AB |
185 | |
186 | int linked, is_getrq; | |
63eba147 | 187 | enum iop_type type; |
4c48f14e | 188 | |
c8b0b334 AB |
189 | #if defined(COUNT_IOS) |
190 | struct list_head cio_head; | |
191 | #endif | |
d76c5b81 | 192 | }; |
095181f2 | 193 | |
6eb42155 ADB |
194 | /* bt_timeline.c */ |
195 | ||
63eba147 | 196 | extern char bt_timeline_version[], *devices, *exes, *input_name, *output_name; |
095181f2 | 197 | extern char *seek_name, *iostat_name, *d2c_name, *q2c_name, *per_io_name; |
fc16a815 | 198 | extern char *bno_dump_name, *unplug_hist_name; |
63eba147 | 199 | extern double range_delta; |
69040794 AB |
200 | extern FILE *ranges_ofp, *avgs_ofp, *iostat_ofp, *per_io_ofp; |
201 | extern int verbose, done, time_bounded, output_all_data, seek_absolute; | |
63eba147 | 202 | extern unsigned int n_devs; |
6eb42155 | 203 | extern unsigned long n_traces; |
4c48f14e | 204 | extern struct list_head all_devs, all_procs; |
63eba147 | 205 | extern struct avgs_info all_avgs; |
4c48f14e | 206 | extern __u64 last_q; |
63eba147 | 207 | extern struct region_info all_regions; |
4c48f14e | 208 | extern struct list_head free_ios; |
21e47d90 | 209 | extern __u64 iostat_interval, iostat_last_stamp; |
6eb42155 | 210 | extern time_t genesis, last_vtrace; |
001b2633 | 211 | extern double t_astart, t_aend; |
fa0ab85d | 212 | extern __u64 q_histo[N_HIST_BKTS], d_histo[N_HIST_BKTS]; |
d76c5b81 AB |
213 | #if defined(DEBUG) |
214 | extern int rb_tree_size; | |
215 | #endif | |
c8b0b334 AB |
216 | #if defined(COUNT_IOS) |
217 | extern unsigned long nios_reused, nios_alloced, nios_freed; | |
218 | extern struct list_head cios; | |
219 | #endif | |
63eba147 | 220 | |
6eb42155 | 221 | /* args.c */ |
63eba147 | 222 | void handle_args(int argc, char *argv[]); |
6eb42155 | 223 | |
69040794 | 224 | /* devmap.c */ |
63eba147 | 225 | int dev_map_read(char *fname); |
6eb42155 | 226 | struct devmap *dev_map_find(__u32 device); |
69040794 | 227 | void dev_map_exit(void); |
63eba147 | 228 | |
6eb42155 | 229 | /* devs.c */ |
d76c5b81 AB |
230 | #if defined(DEBUG) |
231 | void dump_rb_trees(void); | |
232 | #endif | |
6eb42155 | 233 | void init_dev_heads(void); |
095181f2 | 234 | struct d_info *dip_add(__u32 device, struct io *iop); |
6eb42155 ADB |
235 | void dip_rem(struct io *iop); |
236 | struct d_info *__dip_find(__u32 device); | |
095181f2 | 237 | void dip_foreach_list(struct io *iop, enum iop_type type, struct list_head *hd); |
6eb42155 ADB |
238 | void dip_foreach(struct io *iop, enum iop_type type, |
239 | void (*fnc)(struct io *iop, struct io *this), int rm_after); | |
240 | struct io *dip_find_sec(struct d_info *dip, enum iop_type type, __u64 sec); | |
241 | void dip_foreach_out(void (*func)(struct d_info *, void *), void *arg); | |
b2822cea AB |
242 | void dip_plug(__u32 dev, double cur_time); |
243 | void dip_unplug(__u32 dev, double cur_time, int is_timer); | |
69040794 | 244 | void dip_exit(void); |
6eb42155 ADB |
245 | |
246 | /* dip_rb.c */ | |
095181f2 | 247 | int rb_insert(struct rb_root *root, struct io *iop); |
6eb42155 ADB |
248 | struct io *rb_find_sec(struct rb_root *root, __u64 sec); |
249 | void rb_foreach(struct rb_node *n, struct io *iop, | |
250 | void (*fnc)(struct io *iop, struct io *this), | |
251 | struct list_head *head); | |
252 | ||
253 | /* iostat.c */ | |
21e47d90 | 254 | void iostat_init(void); |
4c48f14e | 255 | void iostat_getrq(struct io *iop); |
21e47d90 ADB |
256 | void iostat_merge(struct io *iop); |
257 | void iostat_issue(struct io *iop); | |
6eb42155 ADB |
258 | void iostat_unissue(struct io *iop); |
259 | void iostat_complete(struct io *d_iop, struct io *c_iop); | |
21e47d90 ADB |
260 | void iostat_check_time(__u64 stamp); |
261 | void iostat_dump_stats(__u64 stamp, int all); | |
262 | ||
6eb42155 | 263 | /* latency.c */ |
b2ecdd0f ADB |
264 | void latency_init(struct d_info *dip); |
265 | void latency_clean(void); | |
266 | void latency_d2c(struct d_info *dip, __u64 tstamp, __u64 latency); | |
267 | void latency_q2c(struct d_info *dip, __u64 tstamp, __u64 latency); | |
268 | ||
6eb42155 | 269 | /* misc.c */ |
6eb42155 | 270 | int in_devices(struct blk_io_trace *t); |
6eb42155 ADB |
271 | void add_file(struct file_info **fipp, FILE *fp, char *oname); |
272 | void clean_files(struct file_info **fipp); | |
69040794 AB |
273 | void add_buf(void *buf); |
274 | void clean_bufs(void); | |
6eb42155 ADB |
275 | void dbg_ping(void); |
276 | ||
d76c5b81 AB |
277 | /* mmap.c */ |
278 | void setup_ifile(char *fname); | |
279 | void cleanup_ifile(void); | |
280 | int next_trace(struct blk_io_trace *t, void **pdu); | |
281 | ||
6eb42155 ADB |
282 | /* output.c */ |
283 | int output_avgs(FILE *ofp); | |
284 | int output_ranges(FILE *ofp); | |
285 | char *make_dev_hdr(char *pad, size_t len, struct d_info *dip); | |
286 | ||
287 | /* proc.c */ | |
288 | void add_process(__u32 pid, char *name); | |
289 | struct p_info *find_process(__u32 pid, char *name); | |
290 | void pip_update_q(struct io *iop); | |
291 | void pip_foreach_out(void (*f)(struct p_info *, void *), void *arg); | |
69040794 AB |
292 | void pip_exit(void); |
293 | ||
294 | /* bno_dump.c */ | |
295 | void *bno_dump_init(__u32 device); | |
296 | void bno_dump_exit(void *param); | |
297 | void bno_dump_add(void *handle, struct io *iop); | |
298 | void bno_dump_clean(void); | |
6eb42155 | 299 | |
951ea56c AB |
300 | /* q2d.c */ |
301 | void q2d_histo_add(void *priv, __u64 q2d); | |
302 | void *q2d_init(void); | |
303 | void q2d_release(void *priv); | |
304 | void q2d_display_header(FILE *fp); | |
305 | void q2d_display_dashes(FILE *fp); | |
306 | void q2d_display(FILE *fp, void *priv); | |
307 | int q2d_ok(void *priv); | |
308 | void q2d_acc(void *a1, void *a2); | |
309 | ||
6eb42155 | 310 | /* seek.c */ |
4c48f14e | 311 | void *seeki_init(char *str); |
69040794 | 312 | void seeki_exit(void *param); |
6eb42155 ADB |
313 | void seek_clean(void); |
314 | void seeki_add(void *handle, struct io *iop); | |
315 | double seeki_mean(void *handle); | |
316 | long long seeki_nseeks(void *handle); | |
317 | long long seeki_median(void *handle); | |
318 | int seeki_mode(void *handle, struct mode *mp); | |
319 | ||
320 | /* trace.c */ | |
321 | void add_trace(struct io *iop); | |
322 | ||
095181f2 JA |
323 | /* trace_complete.c */ |
324 | void trace_complete(struct io *c_iop); | |
095181f2 JA |
325 | |
326 | /* trace_im.c */ | |
c8b0b334 AB |
327 | void run_im(struct io *im_iop, struct io *d_iop, struct io *c_iop); |
328 | void run_unim(struct io *im_iop, struct io *d_iop, struct io *c_iop); | |
d76c5b81 | 329 | int ready_im(struct io *im_iop, struct io *c_iop); |
095181f2 JA |
330 | void trace_insert(struct io *i_iop); |
331 | void trace_merge(struct io *m_iop); | |
4c48f14e | 332 | void trace_getrq(struct io *g_iop); |
095181f2 JA |
333 | |
334 | /* trace_issue.c */ | |
c8b0b334 AB |
335 | void run_issue(struct io *d_iop, struct io *u_iop, struct io *c_iop); |
336 | void run_unissue(struct io *d_iop, struct io *u_iop, struct io *c_iop); | |
d76c5b81 | 337 | int ready_issue(struct io *d_iop, struct io *c_iop); |
095181f2 | 338 | void trace_issue(struct io *d_iop); |
095181f2 | 339 | |
b2822cea AB |
340 | /* trace_plug.c */ |
341 | void trace_plug(struct io *p_iop); | |
342 | void trace_unplug_io(struct io *u_iop); | |
343 | void trace_unplug_timer(struct io *u_iop); | |
344 | ||
095181f2 | 345 | /* trace_queue.c */ |
c8b0b334 | 346 | void run_queue(struct io *q_iop, struct io *u_iop, struct io *c_iop); |
d76c5b81 | 347 | int ready_queue(struct io *q_iop, struct io *c_iop); |
095181f2 | 348 | void trace_queue(struct io *q_iop); |
095181f2 JA |
349 | |
350 | /* trace_remap.c */ | |
c8b0b334 | 351 | void run_remap(struct io *a_iop, struct io *u_iop, struct io *c_iop); |
d76c5b81 | 352 | int ready_remap(struct io *a_iop, struct io *c_iop); |
095181f2 | 353 | void trace_remap(struct io *a_iop); |
095181f2 JA |
354 | |
355 | /* trace_requeue.c */ | |
356 | void trace_requeue(struct io *r_iop); | |
095181f2 | 357 | |
fc16a815 AB |
358 | /* unplug_hist.c */ |
359 | void *unplug_hist_init(__u32 device); | |
360 | void unplug_hist_exit(void *arg); | |
361 | void unplug_hist_add(struct io *u_iop); | |
362 | ||
63eba147 | 363 | #include "inlines.h" |