2 * Code related to writing an iolog of what a thread is doing, and to
3 * later read that back and replay
23 static int iolog_flush(struct io_log *log);
25 static const char iolog_ver2[] = "fio version 2 iolog";
27 void queue_io_piece(struct thread_data *td, struct io_piece *ipo)
29 flist_add_tail(&ipo->list, &td->io_log_list);
30 td->total_io_size += ipo->len;
33 void log_io_u(const struct thread_data *td, const struct io_u *io_u)
35 if (!td->o.write_iolog_file)
38 fprintf(td->iolog_f, "%s %s %llu %lu\n", io_u->file->file_name,
39 io_ddir_name(io_u->ddir),
40 io_u->offset, io_u->buflen);
43 void log_file(struct thread_data *td, struct fio_file *f,
44 enum file_log_act what)
46 const char *act[] = { "add", "open", "close" };
50 if (!td->o.write_iolog_file)
55 * this happens on the pre-open/close done before the job starts
60 fprintf(td->iolog_f, "%s %s\n", f->file_name, act[what]);
63 static void iolog_delay(struct thread_data *td, unsigned long delay)
65 uint64_t usec = utime_since_now(&td->last_issue);
69 if (delay < td->time_offset) {
74 delay -= td->time_offset;
80 fio_gettime(&tv, NULL);
81 while (delay && !td->terminate) {
83 if (this_delay > 500000)
86 usec_sleep(td, this_delay);
90 usec = utime_since_now(&tv);
92 td->time_offset = usec - delay;
97 static int ipo_special(struct thread_data *td, struct io_piece *ipo)
105 if (ipo->ddir != DDIR_INVAL)
108 f = td->files[ipo->fileno];
110 switch (ipo->file_action) {
111 case FIO_LOG_OPEN_FILE:
112 ret = td_io_open_file(td, f);
115 td_verror(td, ret, "iolog open file");
117 case FIO_LOG_CLOSE_FILE:
118 td_io_close_file(td, f);
120 case FIO_LOG_UNLINK_FILE:
121 td_io_unlink_file(td, f);
124 log_err("fio: bad file action %d\n", ipo->file_action);
131 int read_iolog_get(struct thread_data *td, struct io_u *io_u)
133 struct io_piece *ipo;
134 unsigned long elapsed;
136 while (!flist_empty(&td->io_log_list)) {
139 ipo = flist_first_entry(&td->io_log_list, struct io_piece, list);
140 flist_del(&ipo->list);
141 remove_trim_entry(td, ipo);
143 ret = ipo_special(td, ipo);
147 } else if (ret > 0) {
152 io_u->ddir = ipo->ddir;
153 if (ipo->ddir != DDIR_WAIT) {
154 io_u->offset = ipo->offset;
155 io_u->buflen = ipo->len;
156 io_u->file = td->files[ipo->fileno];
157 get_file(io_u->file);
158 dprint(FD_IO, "iolog: get %llu/%lu/%s\n", io_u->offset,
159 io_u->buflen, io_u->file->file_name);
161 iolog_delay(td, ipo->delay);
163 elapsed = mtime_since_genesis();
164 if (ipo->delay > elapsed)
165 usec_sleep(td, (ipo->delay - elapsed) * 1000);
170 if (io_u->ddir != DDIR_WAIT)
178 void prune_io_piece_log(struct thread_data *td)
180 struct io_piece *ipo;
183 while ((n = rb_first(&td->io_hist_tree)) != NULL) {
184 ipo = rb_entry(n, struct io_piece, rb_node);
185 rb_erase(n, &td->io_hist_tree);
186 remove_trim_entry(td, ipo);
191 while (!flist_empty(&td->io_hist_list)) {
192 ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list);
193 flist_del(&ipo->list);
194 remove_trim_entry(td, ipo);
201 * log a successful write, so we can unwind the log for verify
203 void log_io_piece(struct thread_data *td, struct io_u *io_u)
205 struct rb_node **p, *parent;
206 struct io_piece *ipo, *__ipo;
208 ipo = malloc(sizeof(struct io_piece));
210 ipo->file = io_u->file;
211 ipo->offset = io_u->offset;
212 ipo->len = io_u->buflen;
213 ipo->numberio = io_u->numberio;
214 ipo->flags = IP_F_IN_FLIGHT;
218 if (io_u_should_trim(td, io_u)) {
219 flist_add_tail(&ipo->trim_list, &td->trim_list);
224 * We don't need to sort the entries, if:
226 * Sequential writes, or
227 * Random writes that lay out the file as it goes along
229 * For both these cases, just reading back data in the order we
230 * wrote it out is the fastest.
232 * One exception is if we don't have a random map AND we are doing
233 * verifies, in that case we need to check for duplicate blocks and
234 * drop the old one, which we rely on the rb insert/lookup for
237 if (((!td->o.verifysort) || !td_random(td) || !td->o.overwrite) &&
238 (file_randommap(td, ipo->file) || td->o.verify == VERIFY_NONE)) {
239 INIT_FLIST_HEAD(&ipo->list);
240 flist_add_tail(&ipo->list, &td->io_hist_list);
241 ipo->flags |= IP_F_ONLIST;
246 RB_CLEAR_NODE(&ipo->rb_node);
249 * Sort the entry into the verification list
252 p = &td->io_hist_tree.rb_node;
258 __ipo = rb_entry(parent, struct io_piece, rb_node);
259 if (ipo->file < __ipo->file)
261 else if (ipo->file > __ipo->file)
263 else if (ipo->offset < __ipo->offset) {
265 overlap = ipo->offset + ipo->len > __ipo->offset;
267 else if (ipo->offset > __ipo->offset) {
269 overlap = __ipo->offset + __ipo->len > ipo->offset;
275 dprint(FD_IO, "iolog: overlap %llu/%lu, %llu/%lu",
276 __ipo->offset, __ipo->len,
277 ipo->offset, ipo->len);
279 rb_erase(parent, &td->io_hist_tree);
280 remove_trim_entry(td, __ipo);
286 rb_link_node(&ipo->rb_node, parent, p);
287 rb_insert_color(&ipo->rb_node, &td->io_hist_tree);
288 ipo->flags |= IP_F_ONRB;
292 void unlog_io_piece(struct thread_data *td, struct io_u *io_u)
294 struct io_piece *ipo = io_u->ipo;
296 if (td->ts.nr_block_infos) {
297 uint32_t *info = io_u_block_info(td, io_u);
298 if (BLOCK_INFO_STATE(*info) < BLOCK_STATE_TRIM_FAILURE) {
299 if (io_u->ddir == DDIR_TRIM)
300 *info = BLOCK_INFO_SET_STATE(*info,
301 BLOCK_STATE_TRIM_FAILURE);
302 else if (io_u->ddir == DDIR_WRITE)
303 *info = BLOCK_INFO_SET_STATE(*info,
304 BLOCK_STATE_WRITE_FAILURE);
311 if (ipo->flags & IP_F_ONRB)
312 rb_erase(&ipo->rb_node, &td->io_hist_tree);
313 else if (ipo->flags & IP_F_ONLIST)
314 flist_del(&ipo->list);
321 void trim_io_piece(struct thread_data *td, const struct io_u *io_u)
323 struct io_piece *ipo = io_u->ipo;
328 ipo->len = io_u->xfer_buflen - io_u->resid;
331 void write_iolog_close(struct thread_data *td)
337 td->iolog_buf = NULL;
341 * Read version 2 iolog data. It is enhanced to include per-file logging,
344 static int read_iolog2(struct thread_data *td, FILE *f)
346 unsigned long long offset;
348 int reads, writes, waits, fileno = 0, file_action = 0; /* stupid gcc */
353 free_release_files(td);
356 * Read in the read iolog and store it, reuse the infrastructure
357 * for doing verifications.
360 fname = malloc(256+16);
361 act = malloc(256+16);
363 reads = writes = waits = 0;
364 while ((p = fgets(str, 4096, f)) != NULL) {
365 struct io_piece *ipo;
368 r = sscanf(p, "%256s %256s %llu %u", fname, act, &offset,
374 if (!strcmp(act, "wait"))
376 else if (!strcmp(act, "read"))
378 else if (!strcmp(act, "write"))
380 else if (!strcmp(act, "sync"))
382 else if (!strcmp(act, "datasync"))
384 else if (!strcmp(act, "trim"))
387 log_err("fio: bad iolog file action: %s\n",
391 fileno = get_fileno(td, fname);
394 if (!strcmp(act, "add")) {
395 fileno = add_file(td, fname, 0, 1);
396 file_action = FIO_LOG_ADD_FILE;
398 } else if (!strcmp(act, "open")) {
399 fileno = get_fileno(td, fname);
400 file_action = FIO_LOG_OPEN_FILE;
401 } else if (!strcmp(act, "close")) {
402 fileno = get_fileno(td, fname);
403 file_action = FIO_LOG_CLOSE_FILE;
405 log_err("fio: bad iolog file action: %s\n",
410 log_err("bad iolog2: %s", p);
416 else if (rw == DDIR_WRITE) {
418 * Don't add a write for ro mode
423 } else if (rw == DDIR_WAIT) {
425 } else if (rw == DDIR_INVAL) {
426 } else if (!ddir_sync(rw)) {
427 log_err("bad ddir: %d\n", rw);
434 ipo = malloc(sizeof(*ipo));
437 if (rw == DDIR_WAIT) {
440 ipo->offset = offset;
442 if (rw != DDIR_INVAL && bytes > td->o.max_bs[rw])
443 td->o.max_bs[rw] = bytes;
444 ipo->fileno = fileno;
445 ipo->file_action = file_action;
449 queue_io_piece(td, ipo);
456 if (writes && read_only) {
457 log_err("fio: <%s> skips replay of %d writes due to"
458 " read-only\n", td->o.name, writes);
462 if (!reads && !writes && !waits)
464 else if (reads && !writes)
465 td->o.td_ddir = TD_DDIR_READ;
466 else if (!reads && writes)
467 td->o.td_ddir = TD_DDIR_WRITE;
469 td->o.td_ddir = TD_DDIR_RW;
475 * open iolog, check version, and call appropriate parser
477 static int init_iolog_read(struct thread_data *td)
479 char buffer[256], *p;
483 f = fopen(td->o.read_iolog_file, "r");
485 perror("fopen read iolog");
489 p = fgets(buffer, sizeof(buffer), f);
491 td_verror(td, errno, "iolog read");
492 log_err("fio: unable to read iolog\n");
498 * version 2 of the iolog stores a specific string as the
499 * first line, check for that
501 if (!strncmp(iolog_ver2, buffer, strlen(iolog_ver2)))
502 ret = read_iolog2(td, f);
504 log_err("fio: iolog version 1 is no longer supported\n");
513 * Set up a log for storing io patterns.
515 static int init_iolog_write(struct thread_data *td)
521 f = fopen(td->o.write_iolog_file, "a");
523 perror("fopen write iolog");
528 * That's it for writing, setup a log buffer and we're done.
531 td->iolog_buf = malloc(8192);
532 setvbuf(f, td->iolog_buf, _IOFBF, 8192);
535 * write our version line
537 if (fprintf(f, "%s\n", iolog_ver2) < 0) {
538 perror("iolog init\n");
543 * add all known files
545 for_each_file(td, ff, i)
546 log_file(td, ff, FIO_LOG_ADD_FILE);
551 int init_iolog(struct thread_data *td)
555 if (td->o.read_iolog_file) {
559 * Check if it's a blktrace file and load that if possible.
560 * Otherwise assume it's a normal log file and load that.
562 if (is_blktrace(td->o.read_iolog_file, &need_swap))
563 ret = load_blktrace(td, td->o.read_iolog_file, need_swap);
565 ret = init_iolog_read(td);
566 } else if (td->o.write_iolog_file)
567 ret = init_iolog_write(td);
570 td_verror(td, EINVAL, "failed initializing iolog");
575 void setup_log(struct io_log **log, struct log_params *p,
576 const char *filename)
580 l = scalloc(1, sizeof(*l));
581 INIT_FLIST_HEAD(&l->io_logs);
582 l->log_type = p->log_type;
583 l->log_offset = p->log_offset;
584 l->log_gz = p->log_gz;
585 l->log_gz_store = p->log_gz_store;
586 l->avg_msec = p->avg_msec;
587 l->filename = strdup(filename);
591 l->log_ddir_mask = LOG_OFFSET_SAMPLE_BIT;
593 INIT_FLIST_HEAD(&l->chunk_list);
595 if (l->log_gz && !p->td)
597 else if (l->log_gz || l->log_gz_store) {
598 pthread_mutex_init(&l->chunk_lock, NULL);
599 p->td->flags |= TD_F_COMPRESS_LOG;
605 #ifdef CONFIG_SETVBUF
606 static void *set_file_buffer(FILE *f)
608 size_t size = 1048576;
612 setvbuf(f, buf, _IOFBF, size);
616 static void clear_file_buffer(void *buf)
621 static void *set_file_buffer(FILE *f)
626 static void clear_file_buffer(void *buf)
631 void free_log(struct io_log *log)
633 while (!flist_empty(&log->io_logs)) {
634 struct io_logs *cur_log;
636 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
637 flist_del_init(&cur_log->list);
645 void flush_samples(FILE *f, void *samples, uint64_t sample_size)
649 uint64_t i, nr_samples;
654 s = __get_sample(samples, 0, 0);
655 log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0;
657 nr_samples = sample_size / __log_entry_sz(log_offset);
659 for (i = 0; i < nr_samples; i++) {
660 s = __get_sample(samples, log_offset, i);
663 fprintf(f, "%lu, %lu, %u, %u\n",
664 (unsigned long) s->time,
665 (unsigned long) s->val,
666 io_sample_ddir(s), s->bs);
668 struct io_sample_offset *so = (void *) s;
670 fprintf(f, "%lu, %lu, %u, %u, %llu\n",
671 (unsigned long) s->time,
672 (unsigned long) s->val,
673 io_sample_ddir(s), s->bs,
674 (unsigned long long) so->offset);
681 struct iolog_flush_data {
682 struct workqueue_work work;
689 #define GZ_CHUNK 131072
691 static struct iolog_compress *get_new_chunk(unsigned int seq)
693 struct iolog_compress *c;
695 c = malloc(sizeof(*c));
696 INIT_FLIST_HEAD(&c->list);
697 c->buf = malloc(GZ_CHUNK);
703 static void free_chunk(struct iolog_compress *ic)
709 static int z_stream_init(z_stream *stream, int gz_hdr)
713 memset(stream, 0, sizeof(*stream));
714 stream->zalloc = Z_NULL;
715 stream->zfree = Z_NULL;
716 stream->opaque = Z_NULL;
717 stream->next_in = Z_NULL;
720 * zlib magic - add 32 for auto-detection of gz header or not,
721 * if we decide to store files in a gzip friendly format.
726 if (inflateInit2(stream, wbits) != Z_OK)
732 struct inflate_chunk_iter {
741 static void finish_chunk(z_stream *stream, FILE *f,
742 struct inflate_chunk_iter *iter)
746 ret = inflateEnd(stream);
748 log_err("fio: failed to end log inflation seq %d (%d)\n",
751 flush_samples(f, iter->buf, iter->buf_used);
754 iter->buf_size = iter->buf_used = 0;
758 * Iterative chunk inflation. Handles cases where we cross into a new
759 * sequence, doing flush finish of previous chunk if needed.
761 static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
762 z_stream *stream, struct inflate_chunk_iter *iter)
766 dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u\n",
767 (unsigned long) ic->len, ic->seq);
769 if (ic->seq != iter->seq) {
771 finish_chunk(stream, f, iter);
773 z_stream_init(stream, gz_hdr);
777 stream->avail_in = ic->len;
778 stream->next_in = ic->buf;
780 if (!iter->buf_size) {
781 iter->buf_size = iter->chunk_sz;
782 iter->buf = malloc(iter->buf_size);
785 while (stream->avail_in) {
786 size_t this_out = iter->buf_size - iter->buf_used;
789 stream->avail_out = this_out;
790 stream->next_out = iter->buf + iter->buf_used;
792 err = inflate(stream, Z_NO_FLUSH);
794 log_err("fio: failed inflating log: %d\n", err);
799 iter->buf_used += this_out - stream->avail_out;
801 if (!stream->avail_out) {
802 iter->buf_size += iter->chunk_sz;
803 iter->buf = realloc(iter->buf, iter->buf_size);
807 if (err == Z_STREAM_END)
811 ret = (void *) stream->next_in - ic->buf;
813 dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) iter->buf_size);
819 * Inflate stored compressed chunks, or write them directly to the log
820 * file if so instructed.
822 static int inflate_gz_chunks(struct io_log *log, FILE *f)
824 struct inflate_chunk_iter iter = { .chunk_sz = log->log_gz, };
827 while (!flist_empty(&log->chunk_list)) {
828 struct iolog_compress *ic;
830 ic = flist_first_entry(&log->chunk_list, struct iolog_compress, list);
831 flist_del(&ic->list);
833 if (log->log_gz_store) {
836 dprint(FD_COMPRESS, "log write chunk size=%lu, "
837 "seq=%u\n", (unsigned long) ic->len, ic->seq);
839 ret = fwrite(ic->buf, ic->len, 1, f);
840 if (ret != 1 || ferror(f)) {
842 log_err("fio: error writing compressed log\n");
845 inflate_chunk(ic, log->log_gz_store, f, &stream, &iter);
851 finish_chunk(&stream, f, &iter);
859 * Open compressed log file and decompress the stored chunks and
860 * write them to stdout. The chunks are stored sequentially in the
861 * file, so we iterate over them and do them one-by-one.
863 int iolog_file_inflate(const char *file)
865 struct inflate_chunk_iter iter = { .chunk_sz = 64 * 1024 * 1024, };
866 struct iolog_compress ic;
874 f = fopen(file, "r");
880 if (stat(file, &sb) < 0) {
886 ic.buf = buf = malloc(sb.st_size);
890 ret = fread(ic.buf, ic.len, 1, f);
896 } else if (ret != 1) {
897 log_err("fio: short read on reading log\n");
906 * Each chunk will return Z_STREAM_END. We don't know how many
907 * chunks are in the file, so we just keep looping and incrementing
908 * the sequence number until we have consumed the whole compressed
915 iret = inflate_chunk(&ic, 1, stdout, &stream, &iter);
928 finish_chunk(&stream, stdout, &iter);
938 static int inflate_gz_chunks(struct io_log *log, FILE *f)
943 int iolog_file_inflate(const char *file)
945 log_err("fio: log inflation not possible without zlib\n");
951 void flush_log(struct io_log *log, int do_append)
957 f = fopen(log->filename, "w");
959 f = fopen(log->filename, "a");
965 buf = set_file_buffer(f);
967 inflate_gz_chunks(log, f);
969 while (!flist_empty(&log->io_logs)) {
970 struct io_logs *cur_log;
972 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
973 flist_del_init(&cur_log->list);
974 flush_samples(f, cur_log->log, cur_log->nr_samples * log_entry_sz(log));
978 clear_file_buffer(buf);
981 static int finish_log(struct thread_data *td, struct io_log *log, int trylock)
983 if (td->flags & TD_F_COMPRESS_LOG)
987 if (fio_trylock_file(log->filename))
990 fio_lock_file(log->filename);
992 if (td->client_type == FIO_CLIENT_TYPE_GUI || is_backend)
993 fio_send_iolog(td, log, log->filename);
995 flush_log(log, !td->o.per_job_logs);
997 fio_unlock_file(log->filename);
1002 size_t log_chunk_sizes(struct io_log *log)
1004 struct flist_head *entry;
1007 if (flist_empty(&log->chunk_list))
1011 pthread_mutex_lock(&log->chunk_lock);
1012 flist_for_each(entry, &log->chunk_list) {
1013 struct iolog_compress *c;
1015 c = flist_entry(entry, struct iolog_compress, list);
1018 pthread_mutex_unlock(&log->chunk_lock);
1024 static int gz_work(struct iolog_flush_data *data)
1026 struct iolog_compress *c = NULL;
1027 struct flist_head list;
1033 INIT_FLIST_HEAD(&list);
1035 memset(&stream, 0, sizeof(stream));
1036 stream.zalloc = Z_NULL;
1037 stream.zfree = Z_NULL;
1038 stream.opaque = Z_NULL;
1040 ret = deflateInit(&stream, Z_DEFAULT_COMPRESSION);
1042 log_err("fio: failed to init gz stream\n");
1046 seq = ++data->log->chunk_seq;
1048 stream.next_in = (void *) data->samples;
1049 stream.avail_in = data->nr_samples * log_entry_sz(data->log);
1051 dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u, log=%s\n",
1052 (unsigned long) stream.avail_in, seq,
1053 data->log->filename);
1056 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1057 c = get_new_chunk(seq);
1058 stream.avail_out = GZ_CHUNK;
1059 stream.next_out = c->buf;
1060 ret = deflate(&stream, Z_NO_FLUSH);
1062 log_err("fio: deflate log (%d)\n", ret);
1067 c->len = GZ_CHUNK - stream.avail_out;
1068 flist_add_tail(&c->list, &list);
1070 } while (stream.avail_in);
1072 stream.next_out = c->buf + c->len;
1073 stream.avail_out = GZ_CHUNK - c->len;
1075 ret = deflate(&stream, Z_FINISH);
1076 if (ret == Z_STREAM_END) {
1078 c->len = GZ_CHUNK - stream.avail_out;
1080 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1083 c->len = GZ_CHUNK - stream.avail_out;
1085 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1088 c = get_new_chunk(seq);
1089 stream.avail_out = GZ_CHUNK;
1090 stream.next_out = c->buf;
1091 ret = deflate(&stream, Z_FINISH);
1092 c->len = GZ_CHUNK - stream.avail_out;
1094 flist_add_tail(&c->list, &list);
1095 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1096 } while (ret != Z_STREAM_END);
1099 dprint(FD_COMPRESS, "deflated to size=%lu\n", (unsigned long) total);
1101 ret = deflateEnd(&stream);
1103 log_err("fio: deflateEnd %d\n", ret);
1105 free(data->samples);
1107 if (!flist_empty(&list)) {
1108 pthread_mutex_lock(&data->log->chunk_lock);
1109 flist_splice_tail(&list, &data->log->chunk_list);
1110 pthread_mutex_unlock(&data->log->chunk_lock);
1119 while (!flist_empty(&list)) {
1120 c = flist_first_entry(list.next, struct iolog_compress, list);
1121 flist_del(&c->list);
1129 * Invoked from our compress helper thread, when logging would have exceeded
1130 * the specified memory limitation. Compresses the previously stored
1133 static int gz_work_async(struct submit_worker *sw, struct workqueue_work *work)
1135 return gz_work(container_of(work, struct iolog_flush_data, work));
1138 static int gz_init_worker(struct submit_worker *sw)
1140 struct thread_data *td = sw->wq->td;
1142 if (!fio_option_is_set(&td->o, log_gz_cpumask))
1145 if (fio_setaffinity(gettid(), td->o.log_gz_cpumask) == -1) {
1146 log_err("gz: failed to set CPU affinity\n");
1153 static struct workqueue_ops log_compress_wq_ops = {
1154 .fn = gz_work_async,
1155 .init_worker_fn = gz_init_worker,
1159 int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out)
1161 if (!(td->flags & TD_F_COMPRESS_LOG))
1164 workqueue_init(td, &td->log_compress_wq, &log_compress_wq_ops, 1, sk_out);
1168 void iolog_compress_exit(struct thread_data *td)
1170 if (!(td->flags & TD_F_COMPRESS_LOG))
1173 workqueue_exit(&td->log_compress_wq);
1177 * Queue work item to compress the existing log entries. We reset the
1178 * current log to a small size, and reference the existing log in the
1179 * data that we queue for compression. Once compression has been done,
1180 * this old log is freed. If called with finish == true, will not return
1181 * until the log compression has completed, and will flush all previous
1184 static int iolog_flush(struct io_log *log)
1186 struct iolog_flush_data *data;
1188 data = malloc(sizeof(*data));
1195 while (!flist_empty(&log->io_logs)) {
1196 struct io_logs *cur_log;
1198 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1199 flist_del_init(&cur_log->list);
1201 data->samples = cur_log->log;
1202 data->nr_samples = cur_log->nr_samples;
1204 cur_log->nr_samples = 0;
1205 cur_log->max_samples = 0;
1206 cur_log->log = NULL;
1215 int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
1217 struct iolog_flush_data *data;
1219 data = malloc(sizeof(*data));
1225 data->samples = cur_log->log;
1226 data->nr_samples = cur_log->nr_samples;
1229 cur_log->nr_samples = cur_log->max_samples = 0;
1230 cur_log->log = NULL;
1232 workqueue_enqueue(&log->td->log_compress_wq, &data->work);
1237 static int iolog_flush(struct io_log *log)
1242 int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
1247 int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out)
1252 void iolog_compress_exit(struct thread_data *td)
1258 struct io_logs *iolog_cur_log(struct io_log *log)
1260 if (flist_empty(&log->io_logs))
1263 return flist_last_entry(&log->io_logs, struct io_logs, list);
1266 uint64_t iolog_nr_samples(struct io_log *iolog)
1268 struct flist_head *entry;
1271 flist_for_each(entry, &iolog->io_logs) {
1272 struct io_logs *cur_log;
1274 cur_log = flist_entry(entry, struct io_logs, list);
1275 ret += cur_log->nr_samples;
1281 static int __write_log(struct thread_data *td, struct io_log *log, int try)
1284 return finish_log(td, log, try);
1289 static int write_iops_log(struct thread_data *td, int try, bool unit_log)
1293 if (per_unit_log(td->iops_log) != unit_log)
1296 ret = __write_log(td, td->iops_log, try);
1298 td->iops_log = NULL;
1303 static int write_slat_log(struct thread_data *td, int try, bool unit_log)
1310 ret = __write_log(td, td->slat_log, try);
1312 td->slat_log = NULL;
1317 static int write_clat_log(struct thread_data *td, int try, bool unit_log)
1324 ret = __write_log(td, td->clat_log, try);
1326 td->clat_log = NULL;
1331 static int write_lat_log(struct thread_data *td, int try, bool unit_log)
1338 ret = __write_log(td, td->lat_log, try);
1345 static int write_bandw_log(struct thread_data *td, int try, bool unit_log)
1349 if (per_unit_log(td->bw_log) != unit_log)
1352 ret = __write_log(td, td->bw_log, try);
1371 int (*fn)(struct thread_data *, int, bool);
1374 static struct log_type log_types[] = {
1376 .mask = BW_LOG_MASK,
1377 .fn = write_bandw_log,
1380 .mask = LAT_LOG_MASK,
1381 .fn = write_lat_log,
1384 .mask = SLAT_LOG_MASK,
1385 .fn = write_slat_log,
1388 .mask = CLAT_LOG_MASK,
1389 .fn = write_clat_log,
1392 .mask = IOPS_LOG_MASK,
1393 .fn = write_iops_log,
1397 void td_writeout_logs(struct thread_data *td, bool unit_logs)
1399 unsigned int log_mask = 0;
1400 unsigned int log_left = ALL_LOG_NR;
1403 old_state = td_bump_runstate(td, TD_FINISHING);
1405 finalize_logs(td, unit_logs);
1408 int prev_log_left = log_left;
1410 for (i = 0; i < ALL_LOG_NR && log_left; i++) {
1411 struct log_type *lt = &log_types[i];
1414 if (!(log_mask & lt->mask)) {
1415 ret = lt->fn(td, log_left != 1, unit_logs);
1418 log_mask |= lt->mask;
1423 if (prev_log_left == log_left)
1427 td_restore_runstate(td, old_state);
1430 void fio_writeout_logs(bool unit_logs)
1432 struct thread_data *td;
1436 td_writeout_logs(td, unit_logs);