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eta: only pass real size of jobs_eta
[fio.git] / client.c
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1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <limits.h>
5#include <errno.h>
6#include <fcntl.h>
7#include <sys/poll.h>
8#include <sys/types.h>
9#include <sys/stat.h>
10#include <sys/wait.h>
11#include <sys/socket.h>
12#include <sys/un.h>
13#include <netinet/in.h>
14#include <arpa/inet.h>
15#include <netdb.h>
16#include <signal.h>
17#ifdef CONFIG_ZLIB
18#include <zlib.h>
19#endif
20
21#include "fio.h"
22#include "client.h"
23#include "server.h"
24#include "flist.h"
25#include "hash.h"
26
27static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
28static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
29static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
30static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
31static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
32static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
33static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
34
35struct client_ops fio_client_ops = {
36 .text = handle_text,
37 .disk_util = handle_du,
38 .thread_status = handle_ts,
39 .group_stats = handle_gs,
40 .stop = handle_stop,
41 .start = handle_start,
42 .eta = display_thread_status,
43 .probe = handle_probe,
44 .eta_msec = FIO_CLIENT_DEF_ETA_MSEC,
45 .client_type = FIO_CLIENT_TYPE_CLI,
46};
47
48static struct timeval eta_tv;
49
50static FLIST_HEAD(client_list);
51static FLIST_HEAD(eta_list);
52
53static FLIST_HEAD(arg_list);
54
55struct thread_stat client_ts;
56struct group_run_stats client_gs;
57int sum_stat_clients;
58
59static int sum_stat_nr;
60static struct json_object *root = NULL;
61static struct json_array *clients_array = NULL;
62static struct json_array *du_array = NULL;
63static int do_output_all_clients;
64
65#define FIO_CLIENT_HASH_BITS 7
66#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
67#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
68static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
69
70static void fio_client_add_hash(struct fio_client *client)
71{
72 int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
73
74 bucket &= FIO_CLIENT_HASH_MASK;
75 flist_add(&client->hash_list, &client_hash[bucket]);
76}
77
78static void fio_client_remove_hash(struct fio_client *client)
79{
80 if (!flist_empty(&client->hash_list))
81 flist_del_init(&client->hash_list);
82}
83
84static void fio_init fio_client_hash_init(void)
85{
86 int i;
87
88 for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
89 INIT_FLIST_HEAD(&client_hash[i]);
90}
91
92static void fio_client_json_init(void)
93{
94 if (output_format != FIO_OUTPUT_JSON)
95 return;
96 root = json_create_object();
97 json_object_add_value_string(root, "fio version", fio_version_string);
98 clients_array = json_create_array();
99 json_object_add_value_array(root, "client_stats", clients_array);
100 du_array = json_create_array();
101 json_object_add_value_array(root, "disk_util", du_array);
102}
103
104static void fio_client_json_fini(void)
105{
106 if (output_format != FIO_OUTPUT_JSON)
107 return;
108 json_print_object(root);
109 log_info("\n");
110 json_free_object(root);
111 root = NULL;
112 clients_array = NULL;
113 du_array = NULL;
114}
115
116static struct fio_client *find_client_by_fd(int fd)
117{
118 int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
119 struct fio_client *client;
120 struct flist_head *entry;
121
122 flist_for_each(entry, &client_hash[bucket]) {
123 client = flist_entry(entry, struct fio_client, hash_list);
124
125 if (client->fd == fd) {
126 client->refs++;
127 return client;
128 }
129 }
130
131 return NULL;
132}
133
134void fio_put_client(struct fio_client *client)
135{
136 if (--client->refs)
137 return;
138
139 free(client->hostname);
140 if (client->argv)
141 free(client->argv);
142 if (client->name)
143 free(client->name);
144 while (client->nr_ini_file)
145 free(client->ini_file[--client->nr_ini_file]);
146 if (client->ini_file)
147 free(client->ini_file);
148
149 if (!client->did_stat)
150 sum_stat_clients -= client->nr_stat;
151
152 free(client);
153}
154
155static void remove_client(struct fio_client *client)
156{
157 assert(client->refs);
158
159 dprint(FD_NET, "client: removed <%s>\n", client->hostname);
160
161 if (!flist_empty(&client->list))
162 flist_del_init(&client->list);
163
164 fio_client_remove_hash(client);
165
166 if (!flist_empty(&client->eta_list)) {
167 flist_del_init(&client->eta_list);
168 fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
169 }
170
171 close(client->fd);
172 client->fd = -1;
173
174 if (client->ops->removed)
175 client->ops->removed(client);
176
177 nr_clients--;
178 fio_put_client(client);
179}
180
181struct fio_client *fio_get_client(struct fio_client *client)
182{
183 client->refs++;
184 return client;
185}
186
187static void __fio_client_add_cmd_option(struct fio_client *client,
188 const char *opt)
189{
190 int index;
191
192 index = client->argc++;
193 client->argv = realloc(client->argv, sizeof(char *) * client->argc);
194 client->argv[index] = strdup(opt);
195 dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
196}
197
198void fio_client_add_cmd_option(void *cookie, const char *opt)
199{
200 struct fio_client *client = cookie;
201 struct flist_head *entry;
202
203 if (!client || !opt)
204 return;
205
206 __fio_client_add_cmd_option(client, opt);
207
208 /*
209 * Duplicate arguments to shared client group
210 */
211 flist_for_each(entry, &arg_list) {
212 client = flist_entry(entry, struct fio_client, arg_list);
213
214 __fio_client_add_cmd_option(client, opt);
215 }
216}
217
218struct fio_client *fio_client_add_explicit(struct client_ops *ops,
219 const char *hostname, int type,
220 int port)
221{
222 struct fio_client *client;
223
224 client = malloc(sizeof(*client));
225 memset(client, 0, sizeof(*client));
226
227 INIT_FLIST_HEAD(&client->list);
228 INIT_FLIST_HEAD(&client->hash_list);
229 INIT_FLIST_HEAD(&client->arg_list);
230 INIT_FLIST_HEAD(&client->eta_list);
231 INIT_FLIST_HEAD(&client->cmd_list);
232
233 client->hostname = strdup(hostname);
234
235 if (type == Fio_client_socket)
236 client->is_sock = 1;
237 else {
238 int ipv6;
239
240 ipv6 = type == Fio_client_ipv6;
241 if (fio_server_parse_host(hostname, ipv6,
242 &client->addr.sin_addr,
243 &client->addr6.sin6_addr))
244 goto err;
245
246 client->port = port;
247 }
248
249 client->fd = -1;
250 client->ops = ops;
251 client->refs = 1;
252 client->type = ops->client_type;
253
254 __fio_client_add_cmd_option(client, "fio");
255
256 flist_add(&client->list, &client_list);
257 nr_clients++;
258 dprint(FD_NET, "client: added <%s>\n", client->hostname);
259 return client;
260err:
261 free(client);
262 return NULL;
263}
264
265void fio_client_add_ini_file(void *cookie, const char *ini_file)
266{
267 struct fio_client *client = cookie;
268 size_t new_size;
269
270 dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
271
272 new_size = (client->nr_ini_file + 1) * sizeof(char *);
273 client->ini_file = realloc(client->ini_file, new_size);
274 client->ini_file[client->nr_ini_file] = strdup(ini_file);
275 client->nr_ini_file++;
276}
277
278int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
279{
280 struct fio_client *existing = *cookie;
281 struct fio_client *client;
282
283 if (existing) {
284 /*
285 * We always add our "exec" name as the option, hence 1
286 * means empty.
287 */
288 if (existing->argc == 1)
289 flist_add_tail(&existing->arg_list, &arg_list);
290 else {
291 while (!flist_empty(&arg_list))
292 flist_del_init(arg_list.next);
293 }
294 }
295
296 client = malloc(sizeof(*client));
297 memset(client, 0, sizeof(*client));
298
299 INIT_FLIST_HEAD(&client->list);
300 INIT_FLIST_HEAD(&client->hash_list);
301 INIT_FLIST_HEAD(&client->arg_list);
302 INIT_FLIST_HEAD(&client->eta_list);
303 INIT_FLIST_HEAD(&client->cmd_list);
304
305 if (fio_server_parse_string(hostname, &client->hostname,
306 &client->is_sock, &client->port,
307 &client->addr.sin_addr,
308 &client->addr6.sin6_addr,
309 &client->ipv6))
310 return -1;
311
312 client->fd = -1;
313 client->ops = ops;
314 client->refs = 1;
315 client->type = ops->client_type;
316
317 __fio_client_add_cmd_option(client, "fio");
318
319 flist_add(&client->list, &client_list);
320 nr_clients++;
321 dprint(FD_NET, "client: added <%s>\n", client->hostname);
322 *cookie = client;
323 return 0;
324}
325
326static void probe_client(struct fio_client *client)
327{
328 struct cmd_client_probe_pdu pdu;
329 uint64_t tag;
330
331 dprint(FD_NET, "client: send probe\n");
332
333#ifdef CONFIG_ZLIB
334 pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
335#else
336 pdu.flags = 0;
337#endif
338
339 fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
340}
341
342static int fio_client_connect_ip(struct fio_client *client)
343{
344 struct sockaddr *addr;
345 socklen_t socklen;
346 int fd, domain;
347
348 if (client->ipv6) {
349 client->addr6.sin6_family = AF_INET6;
350 client->addr6.sin6_port = htons(client->port);
351 domain = AF_INET6;
352 addr = (struct sockaddr *) &client->addr6;
353 socklen = sizeof(client->addr6);
354 } else {
355 client->addr.sin_family = AF_INET;
356 client->addr.sin_port = htons(client->port);
357 domain = AF_INET;
358 addr = (struct sockaddr *) &client->addr;
359 socklen = sizeof(client->addr);
360 }
361
362 fd = socket(domain, SOCK_STREAM, 0);
363 if (fd < 0) {
364 int ret = -errno;
365
366 log_err("fio: socket: %s\n", strerror(errno));
367 return ret;
368 }
369
370 if (connect(fd, addr, socklen) < 0) {
371 int ret = -errno;
372
373 log_err("fio: connect: %s\n", strerror(errno));
374 log_err("fio: failed to connect to %s:%u\n", client->hostname,
375 client->port);
376 close(fd);
377 return ret;
378 }
379
380 return fd;
381}
382
383static int fio_client_connect_sock(struct fio_client *client)
384{
385 struct sockaddr_un *addr = &client->addr_un;
386 socklen_t len;
387 int fd;
388
389 memset(addr, 0, sizeof(*addr));
390 addr->sun_family = AF_UNIX;
391 strncpy(addr->sun_path, client->hostname, sizeof(addr->sun_path) - 1);
392
393 fd = socket(AF_UNIX, SOCK_STREAM, 0);
394 if (fd < 0) {
395 int ret = -errno;
396
397 log_err("fio: socket: %s\n", strerror(errno));
398 return ret;
399 }
400
401 len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
402 if (connect(fd, (struct sockaddr *) addr, len) < 0) {
403 int ret = -errno;
404
405 log_err("fio: connect; %s\n", strerror(errno));
406 close(fd);
407 return ret;
408 }
409
410 return fd;
411}
412
413int fio_client_connect(struct fio_client *client)
414{
415 int fd;
416
417 dprint(FD_NET, "client: connect to host %s\n", client->hostname);
418
419 if (client->is_sock)
420 fd = fio_client_connect_sock(client);
421 else
422 fd = fio_client_connect_ip(client);
423
424 dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
425
426 if (fd < 0)
427 return fd;
428
429 client->fd = fd;
430 fio_client_add_hash(client);
431 client->state = Client_connected;
432
433 probe_client(client);
434 return 0;
435}
436
437int fio_client_terminate(struct fio_client *client)
438{
439 return fio_net_send_quit(client->fd);
440}
441
442void fio_clients_terminate(void)
443{
444 struct flist_head *entry;
445 struct fio_client *client;
446
447 dprint(FD_NET, "client: terminate clients\n");
448
449 flist_for_each(entry, &client_list) {
450 client = flist_entry(entry, struct fio_client, list);
451 fio_client_terminate(client);
452 }
453}
454
455static void sig_int(int sig)
456{
457 dprint(FD_NET, "client: got signal %d\n", sig);
458 fio_clients_terminate();
459}
460
461static void sig_show_status(int sig)
462{
463 show_running_run_stats();
464}
465
466static void client_signal_handler(void)
467{
468 struct sigaction act;
469
470 memset(&act, 0, sizeof(act));
471 act.sa_handler = sig_int;
472 act.sa_flags = SA_RESTART;
473 sigaction(SIGINT, &act, NULL);
474
475 memset(&act, 0, sizeof(act));
476 act.sa_handler = sig_int;
477 act.sa_flags = SA_RESTART;
478 sigaction(SIGTERM, &act, NULL);
479
480/* Windows uses SIGBREAK as a quit signal from other applications */
481#ifdef WIN32
482 memset(&act, 0, sizeof(act));
483 act.sa_handler = sig_int;
484 act.sa_flags = SA_RESTART;
485 sigaction(SIGBREAK, &act, NULL);
486#endif
487
488 memset(&act, 0, sizeof(act));
489 act.sa_handler = sig_show_status;
490 act.sa_flags = SA_RESTART;
491 sigaction(SIGUSR1, &act, NULL);
492}
493
494static int send_client_cmd_line(struct fio_client *client)
495{
496 struct cmd_single_line_pdu *cslp;
497 struct cmd_line_pdu *clp;
498 unsigned long offset;
499 unsigned int *lens;
500 void *pdu;
501 size_t mem;
502 int i, ret;
503
504 dprint(FD_NET, "client: send cmdline %d\n", client->argc);
505
506 lens = malloc(client->argc * sizeof(unsigned int));
507
508 /*
509 * Find out how much mem we need
510 */
511 for (i = 0, mem = 0; i < client->argc; i++) {
512 lens[i] = strlen(client->argv[i]) + 1;
513 mem += lens[i];
514 }
515
516 /*
517 * We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
518 */
519 mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
520
521 pdu = malloc(mem);
522 clp = pdu;
523 offset = sizeof(*clp);
524
525 for (i = 0; i < client->argc; i++) {
526 uint16_t arg_len = lens[i];
527
528 cslp = pdu + offset;
529 strcpy((char *) cslp->text, client->argv[i]);
530 cslp->len = cpu_to_le16(arg_len);
531 offset += sizeof(*cslp) + arg_len;
532 }
533
534 free(lens);
535 clp->lines = cpu_to_le16(client->argc);
536 clp->client_type = __cpu_to_le16(client->type);
537 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
538 free(pdu);
539 return ret;
540}
541
542int fio_clients_connect(void)
543{
544 struct fio_client *client;
545 struct flist_head *entry, *tmp;
546 int ret;
547
548#ifdef WIN32
549 WSADATA wsd;
550 WSAStartup(MAKEWORD(2, 2), &wsd);
551#endif
552
553 dprint(FD_NET, "client: connect all\n");
554
555 client_signal_handler();
556
557 flist_for_each_safe(entry, tmp, &client_list) {
558 client = flist_entry(entry, struct fio_client, list);
559
560 ret = fio_client_connect(client);
561 if (ret) {
562 remove_client(client);
563 continue;
564 }
565
566 if (client->argc > 1)
567 send_client_cmd_line(client);
568 }
569
570 return !nr_clients;
571}
572
573int fio_start_client(struct fio_client *client)
574{
575 dprint(FD_NET, "client: start %s\n", client->hostname);
576 return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
577}
578
579int fio_start_all_clients(void)
580{
581 struct fio_client *client;
582 struct flist_head *entry, *tmp;
583 int ret;
584
585 dprint(FD_NET, "client: start all\n");
586
587 fio_client_json_init();
588
589 flist_for_each_safe(entry, tmp, &client_list) {
590 client = flist_entry(entry, struct fio_client, list);
591
592 ret = fio_start_client(client);
593 if (ret) {
594 remove_client(client);
595 continue;
596 }
597 }
598
599 return flist_empty(&client_list);
600}
601
602/*
603 * Send file contents to server backend. We could use sendfile(), but to remain
604 * more portable lets just read/write the darn thing.
605 */
606static int __fio_client_send_ini(struct fio_client *client, const char *filename)
607{
608 struct cmd_job_pdu *pdu;
609 size_t p_size;
610 struct stat sb;
611 char *p;
612 void *buf;
613 off_t len;
614 int fd, ret;
615
616 dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
617
618 fd = open(filename, O_RDONLY);
619 if (fd < 0) {
620 int ret = -errno;
621
622 log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
623 return ret;
624 }
625
626 if (fstat(fd, &sb) < 0) {
627 int ret = -errno;
628
629 log_err("fio: job file stat: %s\n", strerror(errno));
630 close(fd);
631 return ret;
632 }
633
634 p_size = sb.st_size + sizeof(*pdu);
635 pdu = malloc(p_size);
636 buf = pdu->buf;
637
638 len = sb.st_size;
639 p = buf;
640 do {
641 ret = read(fd, p, len);
642 if (ret > 0) {
643 len -= ret;
644 if (!len)
645 break;
646 p += ret;
647 continue;
648 } else if (!ret)
649 break;
650 else if (errno == EAGAIN || errno == EINTR)
651 continue;
652 } while (1);
653
654 if (len) {
655 log_err("fio: failed reading job file %s\n", filename);
656 close(fd);
657 free(pdu);
658 return 1;
659 }
660
661 pdu->buf_len = __cpu_to_le32(sb.st_size);
662 pdu->client_type = cpu_to_le32(client->type);
663
664 client->sent_job = 1;
665 ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
666 free(pdu);
667 close(fd);
668 return ret;
669}
670
671int fio_client_send_ini(struct fio_client *client, const char *filename)
672{
673 int ret;
674
675 ret = __fio_client_send_ini(client, filename);
676 if (!ret)
677 client->sent_job = 1;
678
679 return ret;
680}
681
682int fio_clients_send_ini(const char *filename)
683{
684 struct fio_client *client;
685 struct flist_head *entry, *tmp;
686
687 flist_for_each_safe(entry, tmp, &client_list) {
688 client = flist_entry(entry, struct fio_client, list);
689
690 if (client->nr_ini_file) {
691 int i;
692
693 for (i = 0; i < client->nr_ini_file; i++) {
694 const char *ini = client->ini_file[i];
695
696 if (fio_client_send_ini(client, ini)) {
697 remove_client(client);
698 break;
699 }
700 }
701 } else if (!filename || fio_client_send_ini(client, filename))
702 remove_client(client);
703 }
704
705 return !nr_clients;
706}
707
708int fio_client_update_options(struct fio_client *client,
709 struct thread_options *o, uint64_t *tag)
710{
711 struct cmd_add_job_pdu pdu;
712
713 pdu.thread_number = cpu_to_le32(client->thread_number);
714 pdu.groupid = cpu_to_le32(client->groupid);
715 convert_thread_options_to_net(&pdu.top, o);
716
717 return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
718}
719
720static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
721{
722 dst->max_val = le64_to_cpu(src->max_val);
723 dst->min_val = le64_to_cpu(src->min_val);
724 dst->samples = le64_to_cpu(src->samples);
725
726 /*
727 * Floats arrive as IEEE 754 encoded uint64_t, convert back to double
728 */
729 dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
730 dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
731}
732
733static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
734{
735 int i, j;
736
737 dst->error = le32_to_cpu(src->error);
738 dst->thread_number = le32_to_cpu(src->thread_number);
739 dst->groupid = le32_to_cpu(src->groupid);
740 dst->pid = le32_to_cpu(src->pid);
741 dst->members = le32_to_cpu(src->members);
742 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
743
744 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
745 convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
746 convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
747 convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
748 convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
749 }
750
751 dst->usr_time = le64_to_cpu(src->usr_time);
752 dst->sys_time = le64_to_cpu(src->sys_time);
753 dst->ctx = le64_to_cpu(src->ctx);
754 dst->minf = le64_to_cpu(src->minf);
755 dst->majf = le64_to_cpu(src->majf);
756 dst->clat_percentiles = le64_to_cpu(src->clat_percentiles);
757
758 for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
759 fio_fp64_t *fps = &src->percentile_list[i];
760 fio_fp64_t *fpd = &dst->percentile_list[i];
761
762 fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
763 }
764
765 for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
766 dst->io_u_map[i] = le32_to_cpu(src->io_u_map[i]);
767 dst->io_u_submit[i] = le32_to_cpu(src->io_u_submit[i]);
768 dst->io_u_complete[i] = le32_to_cpu(src->io_u_complete[i]);
769 }
770
771 for (i = 0; i < FIO_IO_U_LAT_U_NR; i++) {
772 dst->io_u_lat_u[i] = le32_to_cpu(src->io_u_lat_u[i]);
773 dst->io_u_lat_m[i] = le32_to_cpu(src->io_u_lat_m[i]);
774 }
775
776 for (i = 0; i < DDIR_RWDIR_CNT; i++)
777 for (j = 0; j < FIO_IO_U_PLAT_NR; j++)
778 dst->io_u_plat[i][j] = le32_to_cpu(src->io_u_plat[i][j]);
779
780 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
781 dst->total_io_u[i] = le64_to_cpu(src->total_io_u[i]);
782 dst->short_io_u[i] = le64_to_cpu(src->short_io_u[i]);
783 }
784
785 dst->total_submit = le64_to_cpu(src->total_submit);
786 dst->total_complete = le64_to_cpu(src->total_complete);
787
788 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
789 dst->io_bytes[i] = le64_to_cpu(src->io_bytes[i]);
790 dst->runtime[i] = le64_to_cpu(src->runtime[i]);
791 }
792
793 dst->total_run_time = le64_to_cpu(src->total_run_time);
794 dst->continue_on_error = le16_to_cpu(src->continue_on_error);
795 dst->total_err_count = le64_to_cpu(src->total_err_count);
796 dst->first_error = le32_to_cpu(src->first_error);
797 dst->kb_base = le32_to_cpu(src->kb_base);
798 dst->unit_base = le32_to_cpu(src->unit_base);
799
800 dst->latency_depth = le32_to_cpu(src->latency_depth);
801 dst->latency_target = le64_to_cpu(src->latency_target);
802 dst->latency_window = le64_to_cpu(src->latency_window);
803 dst->latency_percentile.u.f = fio_uint64_to_double(le64_to_cpu(src->latency_percentile.u.i));
804}
805
806static void convert_gs(struct group_run_stats *dst, struct group_run_stats *src)
807{
808 int i;
809
810 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
811 dst->max_run[i] = le64_to_cpu(src->max_run[i]);
812 dst->min_run[i] = le64_to_cpu(src->min_run[i]);
813 dst->max_bw[i] = le64_to_cpu(src->max_bw[i]);
814 dst->min_bw[i] = le64_to_cpu(src->min_bw[i]);
815 dst->io_kb[i] = le64_to_cpu(src->io_kb[i]);
816 dst->agg[i] = le64_to_cpu(src->agg[i]);
817 }
818
819 dst->kb_base = le32_to_cpu(src->kb_base);
820 dst->unit_base = le32_to_cpu(src->unit_base);
821 dst->groupid = le32_to_cpu(src->groupid);
822 dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
823}
824
825static void json_object_add_client_info(struct json_object *obj,
826struct fio_client *client)
827{
828 json_object_add_value_string(obj, "hostname", client->hostname);
829 json_object_add_value_int(obj, "port", client->port);
830}
831
832static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd)
833{
834 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
835 struct json_object *tsobj;
836
837 tsobj = show_thread_status(&p->ts, &p->rs);
838 client->did_stat = 1;
839 if (tsobj) {
840 json_object_add_client_info(tsobj, client);
841 json_array_add_value_object(clients_array, tsobj);
842 }
843
844 if (!do_output_all_clients)
845 return;
846
847 sum_thread_stats(&client_ts, &p->ts, sum_stat_nr);
848 sum_group_stats(&client_gs, &p->rs);
849
850 client_ts.members++;
851 client_ts.thread_number = p->ts.thread_number;
852 client_ts.groupid = p->ts.groupid;
853 client_ts.unified_rw_rep = p->ts.unified_rw_rep;
854
855 if (++sum_stat_nr == sum_stat_clients) {
856 strcpy(client_ts.name, "All clients");
857 tsobj = show_thread_status(&client_ts, &client_gs);
858 if (tsobj) {
859 json_object_add_client_info(tsobj, client);
860 json_array_add_value_object(clients_array, tsobj);
861 }
862 }
863}
864
865static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd)
866{
867 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
868
869 show_group_stats(gs);
870}
871
872static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd)
873{
874 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
875 const char *buf = (const char *) pdu->buf;
876 const char *name;
877 int fio_unused ret;
878
879 name = client->name ? client->name : client->hostname;
880
881 if (!client->skip_newline)
882 fprintf(f_out, "<%s> ", name);
883 ret = fwrite(buf, pdu->buf_len, 1, f_out);
884 fflush(f_out);
885 client->skip_newline = strchr(buf, '\n') == NULL;
886}
887
888static void convert_agg(struct disk_util_agg *agg)
889{
890 int i;
891
892 for (i = 0; i < 2; i++) {
893 agg->ios[i] = le32_to_cpu(agg->ios[i]);
894 agg->merges[i] = le32_to_cpu(agg->merges[i]);
895 agg->sectors[i] = le64_to_cpu(agg->sectors[i]);
896 agg->ticks[i] = le32_to_cpu(agg->ticks[i]);
897 }
898
899 agg->io_ticks = le32_to_cpu(agg->io_ticks);
900 agg->time_in_queue = le32_to_cpu(agg->time_in_queue);
901 agg->slavecount = le32_to_cpu(agg->slavecount);
902 agg->max_util.u.f = fio_uint64_to_double(__le64_to_cpu(agg->max_util.u.i));
903}
904
905static void convert_dus(struct disk_util_stat *dus)
906{
907 int i;
908
909 for (i = 0; i < 2; i++) {
910 dus->s.ios[i] = le32_to_cpu(dus->s.ios[i]);
911 dus->s.merges[i] = le32_to_cpu(dus->s.merges[i]);
912 dus->s.sectors[i] = le64_to_cpu(dus->s.sectors[i]);
913 dus->s.ticks[i] = le32_to_cpu(dus->s.ticks[i]);
914 }
915
916 dus->s.io_ticks = le32_to_cpu(dus->s.io_ticks);
917 dus->s.time_in_queue = le32_to_cpu(dus->s.time_in_queue);
918 dus->s.msec = le64_to_cpu(dus->s.msec);
919}
920
921static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd)
922{
923 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
924
925 if (!client->disk_stats_shown) {
926 client->disk_stats_shown = 1;
927 log_info("\nDisk stats (read/write):\n");
928 }
929
930 if (output_format == FIO_OUTPUT_JSON) {
931 struct json_object *duobj;
932 json_array_add_disk_util(&du->dus, &du->agg, du_array);
933 duobj = json_array_last_value_object(du_array);
934 json_object_add_client_info(duobj, client);
935 } else
936 print_disk_util(&du->dus, &du->agg, output_format == FIO_OUTPUT_TERSE);
937}
938
939static void convert_jobs_eta(struct jobs_eta *je)
940{
941 int i;
942
943 je->nr_running = le32_to_cpu(je->nr_running);
944 je->nr_ramp = le32_to_cpu(je->nr_ramp);
945 je->nr_pending = le32_to_cpu(je->nr_pending);
946 je->nr_setting_up = le32_to_cpu(je->nr_setting_up);
947 je->files_open = le32_to_cpu(je->files_open);
948
949 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
950 je->m_rate[i] = le32_to_cpu(je->m_rate[i]);
951 je->t_rate[i] = le32_to_cpu(je->t_rate[i]);
952 je->m_iops[i] = le32_to_cpu(je->m_iops[i]);
953 je->t_iops[i] = le32_to_cpu(je->t_iops[i]);
954 je->rate[i] = le32_to_cpu(je->rate[i]);
955 je->iops[i] = le32_to_cpu(je->iops[i]);
956 }
957
958 je->elapsed_sec = le64_to_cpu(je->elapsed_sec);
959 je->eta_sec = le64_to_cpu(je->eta_sec);
960 je->nr_threads = le32_to_cpu(je->nr_threads);
961 je->is_pow2 = le32_to_cpu(je->is_pow2);
962 je->unit_base = le32_to_cpu(je->unit_base);
963}
964
965void fio_client_sum_jobs_eta(struct jobs_eta *dst, struct jobs_eta *je)
966{
967 int i;
968
969 dst->nr_running += je->nr_running;
970 dst->nr_ramp += je->nr_ramp;
971 dst->nr_pending += je->nr_pending;
972 dst->nr_setting_up += je->nr_setting_up;
973 dst->files_open += je->files_open;
974
975 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
976 dst->m_rate[i] += je->m_rate[i];
977 dst->t_rate[i] += je->t_rate[i];
978 dst->m_iops[i] += je->m_iops[i];
979 dst->t_iops[i] += je->t_iops[i];
980 dst->rate[i] += je->rate[i];
981 dst->iops[i] += je->iops[i];
982 }
983
984 dst->elapsed_sec += je->elapsed_sec;
985
986 if (je->eta_sec > dst->eta_sec)
987 dst->eta_sec = je->eta_sec;
988
989 dst->nr_threads += je->nr_threads;
990 /* we need to handle je->run_str too ... */
991}
992
993void fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
994{
995 if (!--eta->pending) {
996 eta_fn(&eta->eta);
997 free(eta);
998 }
999}
1000
1001static void remove_reply_cmd(struct fio_client *client, struct fio_net_cmd *cmd)
1002{
1003 struct fio_net_cmd_reply *reply = NULL;
1004 struct flist_head *entry;
1005
1006 flist_for_each(entry, &client->cmd_list) {
1007 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1008
1009 if (cmd->tag == (uintptr_t) reply)
1010 break;
1011
1012 reply = NULL;
1013 }
1014
1015 if (!reply) {
1016 log_err("fio: client: unable to find matching tag (%llx)\n", (unsigned long long) cmd->tag);
1017 return;
1018 }
1019
1020 flist_del(&reply->list);
1021 cmd->tag = reply->saved_tag;
1022 free(reply);
1023}
1024
1025int fio_client_wait_for_reply(struct fio_client *client, uint64_t tag)
1026{
1027 do {
1028 struct fio_net_cmd_reply *reply = NULL;
1029 struct flist_head *entry;
1030
1031 flist_for_each(entry, &client->cmd_list) {
1032 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1033
1034 if (tag == (uintptr_t) reply)
1035 break;
1036
1037 reply = NULL;
1038 }
1039
1040 if (!reply)
1041 break;
1042
1043 usleep(1000);
1044 } while (1);
1045
1046 return 0;
1047}
1048
1049static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
1050{
1051 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1052 struct client_eta *eta = (struct client_eta *) (uintptr_t) cmd->tag;
1053
1054 dprint(FD_NET, "client: got eta tag %p, %d\n", eta, eta->pending);
1055
1056 assert(client->eta_in_flight == eta);
1057
1058 client->eta_in_flight = NULL;
1059 flist_del_init(&client->eta_list);
1060
1061 if (client->ops->jobs_eta)
1062 client->ops->jobs_eta(client, je);
1063
1064 fio_client_sum_jobs_eta(&eta->eta, je);
1065 fio_client_dec_jobs_eta(eta, client->ops->eta);
1066}
1067
1068static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
1069{
1070 struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
1071 const char *os, *arch;
1072 char bit[16];
1073
1074 os = fio_get_os_string(probe->os);
1075 if (!os)
1076 os = "unknown";
1077
1078 arch = fio_get_arch_string(probe->arch);
1079 if (!arch)
1080 os = "unknown";
1081
1082 sprintf(bit, "%d-bit", probe->bpp * 8);
1083 probe->flags = le64_to_cpu(probe->flags);
1084
1085 log_info("hostname=%s, be=%u, %s, os=%s, arch=%s, fio=%s, flags=%lx\n",
1086 probe->hostname, probe->bigendian, bit, os, arch,
1087 probe->fio_version, (unsigned long) probe->flags);
1088
1089 if (!client->name)
1090 client->name = strdup((char *) probe->hostname);
1091}
1092
1093static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd)
1094{
1095 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1096
1097 client->state = Client_started;
1098 client->jobs = le32_to_cpu(pdu->jobs);
1099 client->nr_stat = le32_to_cpu(pdu->stat_outputs);
1100
1101 if (sum_stat_clients > 1)
1102 do_output_all_clients = 1;
1103
1104 sum_stat_clients += client->nr_stat;
1105}
1106
1107static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd)
1108{
1109 if (client->error)
1110 log_info("client <%s>: exited with error %d\n", client->hostname, client->error);
1111}
1112
1113static void convert_stop(struct fio_net_cmd *cmd)
1114{
1115 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1116
1117 pdu->error = le32_to_cpu(pdu->error);
1118}
1119
1120static void convert_text(struct fio_net_cmd *cmd)
1121{
1122 struct cmd_text_pdu *pdu = (struct cmd_text_pdu *) cmd->payload;
1123
1124 pdu->level = le32_to_cpu(pdu->level);
1125 pdu->buf_len = le32_to_cpu(pdu->buf_len);
1126 pdu->log_sec = le64_to_cpu(pdu->log_sec);
1127 pdu->log_usec = le64_to_cpu(pdu->log_usec);
1128}
1129
1130static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
1131 struct cmd_iolog_pdu *pdu)
1132{
1133#ifdef CONFIG_ZLIB
1134 struct cmd_iolog_pdu *ret;
1135 z_stream stream;
1136 uint32_t nr_samples;
1137 size_t total;
1138 void *p;
1139
1140 stream.zalloc = Z_NULL;
1141 stream.zfree = Z_NULL;
1142 stream.opaque = Z_NULL;
1143 stream.avail_in = 0;
1144 stream.next_in = Z_NULL;
1145
1146 if (inflateInit(&stream) != Z_OK)
1147 return NULL;
1148
1149 /*
1150 * Get header first, it's not compressed
1151 */
1152 nr_samples = le32_to_cpu(pdu->nr_samples);
1153
1154 total = nr_samples * sizeof(struct io_sample);
1155 ret = malloc(total + sizeof(*pdu));
1156 ret->nr_samples = nr_samples;
1157
1158 memcpy(ret, pdu, sizeof(*pdu));
1159
1160 p = (void *) ret + sizeof(*pdu);
1161
1162 stream.avail_in = cmd->pdu_len - sizeof(*pdu);
1163 stream.next_in = (void *) pdu + sizeof(*pdu);
1164 while (stream.avail_in) {
1165 unsigned int this_chunk = 65536;
1166 unsigned int this_len;
1167 int err;
1168
1169 if (this_chunk > total)
1170 this_chunk = total;
1171
1172 stream.avail_out = this_chunk;
1173 stream.next_out = p;
1174 err = inflate(&stream, Z_NO_FLUSH);
1175 /* may be Z_OK, or Z_STREAM_END */
1176 if (err < 0) {
1177 log_err("fio: inflate error %d\n", err);
1178 free(ret);
1179 ret = NULL;
1180 goto err;
1181 }
1182
1183 this_len = this_chunk - stream.avail_out;
1184 p += this_len;
1185 total -= this_len;
1186 }
1187
1188err:
1189 inflateEnd(&stream);
1190 return ret;
1191#else
1192 return NULL;
1193#endif
1194}
1195
1196/*
1197 * This has been compressed on the server side, since it can be big.
1198 * Uncompress here.
1199 */
1200static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
1201{
1202 struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
1203 struct cmd_iolog_pdu *ret;
1204 int i;
1205
1206 /*
1207 * Convert if compressed and we support it. If it's not
1208 * compressed, we need not do anything.
1209 */
1210 if (le32_to_cpu(pdu->compressed)) {
1211#ifndef CONFIG_ZLIB
1212 log_err("fio: server sent compressed data by mistake\n");
1213 return NULL;
1214#endif
1215 ret = convert_iolog_gz(cmd, pdu);
1216 if (!ret) {
1217 log_err("fio: failed decompressing log\n");
1218 return NULL;
1219 }
1220 } else
1221 ret = pdu;
1222
1223 ret->thread_number = le32_to_cpu(ret->thread_number);
1224 ret->nr_samples = le32_to_cpu(ret->nr_samples);
1225 ret->log_type = le32_to_cpu(ret->log_type);
1226 ret->compressed = le32_to_cpu(ret->compressed);
1227
1228 for (i = 0; i < ret->nr_samples; i++) {
1229 struct io_sample *s = &ret->samples[i];
1230
1231 s->time = le64_to_cpu(s->time);
1232 s->val = le64_to_cpu(s->val);
1233 s->ddir = le32_to_cpu(s->ddir);
1234 s->bs = le32_to_cpu(s->bs);
1235 }
1236
1237 return ret;
1238}
1239
1240int fio_handle_client(struct fio_client *client)
1241{
1242 struct client_ops *ops = client->ops;
1243 struct fio_net_cmd *cmd;
1244
1245 dprint(FD_NET, "client: handle %s\n", client->hostname);
1246
1247 cmd = fio_net_recv_cmd(client->fd);
1248 if (!cmd)
1249 return 0;
1250
1251 dprint(FD_NET, "client: got cmd op %s from %s (pdu=%u)\n",
1252 fio_server_op(cmd->opcode), client->hostname, cmd->pdu_len);
1253
1254 switch (cmd->opcode) {
1255 case FIO_NET_CMD_QUIT:
1256 if (ops->quit)
1257 ops->quit(client, cmd);
1258 remove_client(client);
1259 free(cmd);
1260 break;
1261 case FIO_NET_CMD_TEXT:
1262 convert_text(cmd);
1263 ops->text(client, cmd);
1264 free(cmd);
1265 break;
1266 case FIO_NET_CMD_DU: {
1267 struct cmd_du_pdu *du = (struct cmd_du_pdu *) cmd->payload;
1268
1269 convert_dus(&du->dus);
1270 convert_agg(&du->agg);
1271
1272 ops->disk_util(client, cmd);
1273 free(cmd);
1274 break;
1275 }
1276 case FIO_NET_CMD_TS: {
1277 struct cmd_ts_pdu *p = (struct cmd_ts_pdu *) cmd->payload;
1278
1279 convert_ts(&p->ts, &p->ts);
1280 convert_gs(&p->rs, &p->rs);
1281
1282 ops->thread_status(client, cmd);
1283 free(cmd);
1284 break;
1285 }
1286 case FIO_NET_CMD_GS: {
1287 struct group_run_stats *gs = (struct group_run_stats *) cmd->payload;
1288
1289 convert_gs(gs, gs);
1290
1291 ops->group_stats(client, cmd);
1292 free(cmd);
1293 break;
1294 }
1295 case FIO_NET_CMD_ETA: {
1296 struct jobs_eta *je = (struct jobs_eta *) cmd->payload;
1297
1298 remove_reply_cmd(client, cmd);
1299 convert_jobs_eta(je);
1300 handle_eta(client, cmd);
1301 free(cmd);
1302 break;
1303 }
1304 case FIO_NET_CMD_PROBE:
1305 remove_reply_cmd(client, cmd);
1306 ops->probe(client, cmd);
1307 free(cmd);
1308 break;
1309 case FIO_NET_CMD_SERVER_START:
1310 client->state = Client_running;
1311 if (ops->job_start)
1312 ops->job_start(client, cmd);
1313 free(cmd);
1314 break;
1315 case FIO_NET_CMD_START: {
1316 struct cmd_start_pdu *pdu = (struct cmd_start_pdu *) cmd->payload;
1317
1318 pdu->jobs = le32_to_cpu(pdu->jobs);
1319 ops->start(client, cmd);
1320 free(cmd);
1321 break;
1322 }
1323 case FIO_NET_CMD_STOP: {
1324 struct cmd_end_pdu *pdu = (struct cmd_end_pdu *) cmd->payload;
1325
1326 convert_stop(cmd);
1327 client->state = Client_stopped;
1328 client->error = le32_to_cpu(pdu->error);
1329 client->signal = le32_to_cpu(pdu->signal);
1330 ops->stop(client, cmd);
1331 free(cmd);
1332 break;
1333 }
1334 case FIO_NET_CMD_ADD_JOB: {
1335 struct cmd_add_job_pdu *pdu = (struct cmd_add_job_pdu *) cmd->payload;
1336
1337 client->thread_number = le32_to_cpu(pdu->thread_number);
1338 client->groupid = le32_to_cpu(pdu->groupid);
1339
1340 if (ops->add_job)
1341 ops->add_job(client, cmd);
1342 free(cmd);
1343 break;
1344 }
1345 case FIO_NET_CMD_IOLOG:
1346 if (ops->iolog) {
1347 struct cmd_iolog_pdu *pdu;
1348
1349 pdu = convert_iolog(cmd);
1350 ops->iolog(client, pdu);
1351 }
1352 free(cmd);
1353 break;
1354 case FIO_NET_CMD_UPDATE_JOB:
1355 ops->update_job(client, cmd);
1356 remove_reply_cmd(client, cmd);
1357 free(cmd);
1358 break;
1359 default:
1360 log_err("fio: unknown client op: %s\n", fio_server_op(cmd->opcode));
1361 free(cmd);
1362 break;
1363 }
1364
1365 return 1;
1366}
1367
1368static void request_client_etas(struct client_ops *ops)
1369{
1370 struct fio_client *client;
1371 struct flist_head *entry;
1372 struct client_eta *eta;
1373 int skipped = 0;
1374
1375 dprint(FD_NET, "client: request eta (%d)\n", nr_clients);
1376
1377 eta = malloc(sizeof(*eta));
1378 memset(&eta->eta, 0, sizeof(eta->eta));
1379 eta->pending = nr_clients;
1380
1381 flist_for_each(entry, &client_list) {
1382 client = flist_entry(entry, struct fio_client, list);
1383
1384 if (!flist_empty(&client->eta_list)) {
1385 skipped++;
1386 continue;
1387 }
1388 if (client->state != Client_running)
1389 continue;
1390
1391 assert(!client->eta_in_flight);
1392 flist_add_tail(&client->eta_list, &eta_list);
1393 client->eta_in_flight = eta;
1394 fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_SEND_ETA,
1395 (uintptr_t) eta, &client->cmd_list);
1396 }
1397
1398 while (skipped--)
1399 fio_client_dec_jobs_eta(eta, ops->eta);
1400
1401 dprint(FD_NET, "client: requested eta tag %p\n", eta);
1402}
1403
1404static int client_check_cmd_timeout(struct fio_client *client,
1405 struct timeval *now)
1406{
1407 struct fio_net_cmd_reply *reply;
1408 struct flist_head *entry, *tmp;
1409 int ret = 0;
1410
1411 flist_for_each_safe(entry, tmp, &client->cmd_list) {
1412 reply = flist_entry(entry, struct fio_net_cmd_reply, list);
1413
1414 if (mtime_since(&reply->tv, now) < FIO_NET_CLIENT_TIMEOUT)
1415 continue;
1416
1417 log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
1418 fio_server_op(reply->opcode));
1419 flist_del(&reply->list);
1420 free(reply);
1421 ret = 1;
1422 }
1423
1424 return flist_empty(&client->cmd_list) && ret;
1425}
1426
1427static int fio_check_clients_timed_out(void)
1428{
1429 struct fio_client *client;
1430 struct flist_head *entry, *tmp;
1431 struct timeval tv;
1432 int ret = 0;
1433
1434 fio_gettime(&tv, NULL);
1435
1436 flist_for_each_safe(entry, tmp, &client_list) {
1437 client = flist_entry(entry, struct fio_client, list);
1438
1439 if (flist_empty(&client->cmd_list))
1440 continue;
1441
1442 if (!client_check_cmd_timeout(client, &tv))
1443 continue;
1444
1445 if (client->ops->timed_out)
1446 client->ops->timed_out(client);
1447 else
1448 log_err("fio: client %s timed out\n", client->hostname);
1449
1450 remove_client(client);
1451 ret = 1;
1452 }
1453
1454 return ret;
1455}
1456
1457int fio_handle_clients(struct client_ops *ops)
1458{
1459 struct pollfd *pfds;
1460 int i, ret = 0, retval = 0;
1461
1462 fio_gettime(&eta_tv, NULL);
1463
1464 pfds = malloc(nr_clients * sizeof(struct pollfd));
1465
1466 init_thread_stat(&client_ts);
1467 init_group_run_stat(&client_gs);
1468
1469 while (!exit_backend && nr_clients) {
1470 struct flist_head *entry, *tmp;
1471 struct fio_client *client;
1472
1473 i = 0;
1474 flist_for_each_safe(entry, tmp, &client_list) {
1475 client = flist_entry(entry, struct fio_client, list);
1476
1477 if (!client->sent_job && !client->ops->stay_connected &&
1478 flist_empty(&client->cmd_list)) {
1479 remove_client(client);
1480 continue;
1481 }
1482
1483 pfds[i].fd = client->fd;
1484 pfds[i].events = POLLIN;
1485 i++;
1486 }
1487
1488 if (!nr_clients)
1489 break;
1490
1491 assert(i == nr_clients);
1492
1493 do {
1494 struct timeval tv;
1495
1496 fio_gettime(&tv, NULL);
1497 if (mtime_since(&eta_tv, &tv) >= 900) {
1498 request_client_etas(ops);
1499 memcpy(&eta_tv, &tv, sizeof(tv));
1500
1501 if (fio_check_clients_timed_out())
1502 break;
1503 }
1504
1505 ret = poll(pfds, nr_clients, ops->eta_msec);
1506 if (ret < 0) {
1507 if (errno == EINTR)
1508 continue;
1509 log_err("fio: poll clients: %s\n", strerror(errno));
1510 break;
1511 } else if (!ret)
1512 continue;
1513 } while (ret <= 0);
1514
1515 for (i = 0; i < nr_clients; i++) {
1516 if (!(pfds[i].revents & POLLIN))
1517 continue;
1518
1519 client = find_client_by_fd(pfds[i].fd);
1520 if (!client) {
1521 log_err("fio: unknown client fd %ld\n", (long) pfds[i].fd);
1522 continue;
1523 }
1524 if (!fio_handle_client(client)) {
1525 log_info("client: host=%s disconnected\n",
1526 client->hostname);
1527 remove_client(client);
1528 retval = 1;
1529 } else if (client->error)
1530 retval = 1;
1531 fio_put_client(client);
1532 }
1533 }
1534
1535 fio_client_json_fini();
1536
1537 free(pfds);
1538 return retval;
1539}
fio - Flexible IO Tester