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);
590 if (l->td && l->td->o.io_submit_mode != IO_MODE_OFFLOAD) {
593 p = calloc(1, sizeof(*l->pending));
594 p->max_samples = DEF_LOG_ENTRIES;
595 p->log = calloc(p->max_samples, log_entry_sz(l));
600 l->log_ddir_mask = LOG_OFFSET_SAMPLE_BIT;
602 INIT_FLIST_HEAD(&l->chunk_list);
604 if (l->log_gz && !p->td)
606 else if (l->log_gz || l->log_gz_store) {
607 mutex_init_pshared(&l->chunk_lock);
608 p->td->flags |= TD_F_COMPRESS_LOG;
614 #ifdef CONFIG_SETVBUF
615 static void *set_file_buffer(FILE *f)
617 size_t size = 1048576;
621 setvbuf(f, buf, _IOFBF, size);
625 static void clear_file_buffer(void *buf)
630 static void *set_file_buffer(FILE *f)
635 static void clear_file_buffer(void *buf)
640 void free_log(struct io_log *log)
642 while (!flist_empty(&log->io_logs)) {
643 struct io_logs *cur_log;
645 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
646 flist_del_init(&cur_log->list);
652 free(log->pending->log);
662 void flush_samples(FILE *f, void *samples, uint64_t sample_size)
666 uint64_t i, nr_samples;
671 s = __get_sample(samples, 0, 0);
672 log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0;
674 nr_samples = sample_size / __log_entry_sz(log_offset);
676 for (i = 0; i < nr_samples; i++) {
677 s = __get_sample(samples, log_offset, i);
680 fprintf(f, "%lu, %lu, %u, %u\n",
681 (unsigned long) s->time,
682 (unsigned long) s->val,
683 io_sample_ddir(s), s->bs);
685 struct io_sample_offset *so = (void *) s;
687 fprintf(f, "%lu, %lu, %u, %u, %llu\n",
688 (unsigned long) s->time,
689 (unsigned long) s->val,
690 io_sample_ddir(s), s->bs,
691 (unsigned long long) so->offset);
698 struct iolog_flush_data {
699 struct workqueue_work work;
706 #define GZ_CHUNK 131072
708 static struct iolog_compress *get_new_chunk(unsigned int seq)
710 struct iolog_compress *c;
712 c = malloc(sizeof(*c));
713 INIT_FLIST_HEAD(&c->list);
714 c->buf = malloc(GZ_CHUNK);
720 static void free_chunk(struct iolog_compress *ic)
726 static int z_stream_init(z_stream *stream, int gz_hdr)
730 memset(stream, 0, sizeof(*stream));
731 stream->zalloc = Z_NULL;
732 stream->zfree = Z_NULL;
733 stream->opaque = Z_NULL;
734 stream->next_in = Z_NULL;
737 * zlib magic - add 32 for auto-detection of gz header or not,
738 * if we decide to store files in a gzip friendly format.
743 if (inflateInit2(stream, wbits) != Z_OK)
749 struct inflate_chunk_iter {
758 static void finish_chunk(z_stream *stream, FILE *f,
759 struct inflate_chunk_iter *iter)
763 ret = inflateEnd(stream);
765 log_err("fio: failed to end log inflation seq %d (%d)\n",
768 flush_samples(f, iter->buf, iter->buf_used);
771 iter->buf_size = iter->buf_used = 0;
775 * Iterative chunk inflation. Handles cases where we cross into a new
776 * sequence, doing flush finish of previous chunk if needed.
778 static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
779 z_stream *stream, struct inflate_chunk_iter *iter)
783 dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u\n",
784 (unsigned long) ic->len, ic->seq);
786 if (ic->seq != iter->seq) {
788 finish_chunk(stream, f, iter);
790 z_stream_init(stream, gz_hdr);
794 stream->avail_in = ic->len;
795 stream->next_in = ic->buf;
797 if (!iter->buf_size) {
798 iter->buf_size = iter->chunk_sz;
799 iter->buf = malloc(iter->buf_size);
802 while (stream->avail_in) {
803 size_t this_out = iter->buf_size - iter->buf_used;
806 stream->avail_out = this_out;
807 stream->next_out = iter->buf + iter->buf_used;
809 err = inflate(stream, Z_NO_FLUSH);
811 log_err("fio: failed inflating log: %d\n", err);
816 iter->buf_used += this_out - stream->avail_out;
818 if (!stream->avail_out) {
819 iter->buf_size += iter->chunk_sz;
820 iter->buf = realloc(iter->buf, iter->buf_size);
824 if (err == Z_STREAM_END)
828 ret = (void *) stream->next_in - ic->buf;
830 dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) iter->buf_size);
836 * Inflate stored compressed chunks, or write them directly to the log
837 * file if so instructed.
839 static int inflate_gz_chunks(struct io_log *log, FILE *f)
841 struct inflate_chunk_iter iter = { .chunk_sz = log->log_gz, };
844 while (!flist_empty(&log->chunk_list)) {
845 struct iolog_compress *ic;
847 ic = flist_first_entry(&log->chunk_list, struct iolog_compress, list);
848 flist_del(&ic->list);
850 if (log->log_gz_store) {
853 dprint(FD_COMPRESS, "log write chunk size=%lu, "
854 "seq=%u\n", (unsigned long) ic->len, ic->seq);
856 ret = fwrite(ic->buf, ic->len, 1, f);
857 if (ret != 1 || ferror(f)) {
859 log_err("fio: error writing compressed log\n");
862 inflate_chunk(ic, log->log_gz_store, f, &stream, &iter);
868 finish_chunk(&stream, f, &iter);
876 * Open compressed log file and decompress the stored chunks and
877 * write them to stdout. The chunks are stored sequentially in the
878 * file, so we iterate over them and do them one-by-one.
880 int iolog_file_inflate(const char *file)
882 struct inflate_chunk_iter iter = { .chunk_sz = 64 * 1024 * 1024, };
883 struct iolog_compress ic;
891 f = fopen(file, "r");
897 if (stat(file, &sb) < 0) {
903 ic.buf = buf = malloc(sb.st_size);
907 ret = fread(ic.buf, ic.len, 1, f);
913 } else if (ret != 1) {
914 log_err("fio: short read on reading log\n");
923 * Each chunk will return Z_STREAM_END. We don't know how many
924 * chunks are in the file, so we just keep looping and incrementing
925 * the sequence number until we have consumed the whole compressed
932 iret = inflate_chunk(&ic, 1, stdout, &stream, &iter);
945 finish_chunk(&stream, stdout, &iter);
955 static int inflate_gz_chunks(struct io_log *log, FILE *f)
960 int iolog_file_inflate(const char *file)
962 log_err("fio: log inflation not possible without zlib\n");
968 void flush_log(struct io_log *log, bool do_append)
974 f = fopen(log->filename, "w");
976 f = fopen(log->filename, "a");
982 buf = set_file_buffer(f);
984 inflate_gz_chunks(log, f);
986 while (!flist_empty(&log->io_logs)) {
987 struct io_logs *cur_log;
989 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
990 flist_del_init(&cur_log->list);
991 flush_samples(f, cur_log->log, cur_log->nr_samples * log_entry_sz(log));
996 clear_file_buffer(buf);
999 static int finish_log(struct thread_data *td, struct io_log *log, int trylock)
1001 if (td->flags & TD_F_COMPRESS_LOG)
1005 if (fio_trylock_file(log->filename))
1008 fio_lock_file(log->filename);
1010 if (td->client_type == FIO_CLIENT_TYPE_GUI || is_backend)
1011 fio_send_iolog(td, log, log->filename);
1013 flush_log(log, !td->o.per_job_logs);
1015 fio_unlock_file(log->filename);
1020 size_t log_chunk_sizes(struct io_log *log)
1022 struct flist_head *entry;
1025 if (flist_empty(&log->chunk_list))
1029 pthread_mutex_lock(&log->chunk_lock);
1030 flist_for_each(entry, &log->chunk_list) {
1031 struct iolog_compress *c;
1033 c = flist_entry(entry, struct iolog_compress, list);
1036 pthread_mutex_unlock(&log->chunk_lock);
1042 static int gz_work(struct iolog_flush_data *data)
1044 struct iolog_compress *c = NULL;
1045 struct flist_head list;
1051 INIT_FLIST_HEAD(&list);
1053 memset(&stream, 0, sizeof(stream));
1054 stream.zalloc = Z_NULL;
1055 stream.zfree = Z_NULL;
1056 stream.opaque = Z_NULL;
1058 ret = deflateInit(&stream, Z_DEFAULT_COMPRESSION);
1060 log_err("fio: failed to init gz stream\n");
1064 seq = ++data->log->chunk_seq;
1066 stream.next_in = (void *) data->samples;
1067 stream.avail_in = data->nr_samples * log_entry_sz(data->log);
1069 dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u, log=%s\n",
1070 (unsigned long) stream.avail_in, seq,
1071 data->log->filename);
1074 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1075 c = get_new_chunk(seq);
1076 stream.avail_out = GZ_CHUNK;
1077 stream.next_out = c->buf;
1078 ret = deflate(&stream, Z_NO_FLUSH);
1080 log_err("fio: deflate log (%d)\n", ret);
1085 c->len = GZ_CHUNK - stream.avail_out;
1086 flist_add_tail(&c->list, &list);
1088 } while (stream.avail_in);
1090 stream.next_out = c->buf + c->len;
1091 stream.avail_out = GZ_CHUNK - c->len;
1093 ret = deflate(&stream, Z_FINISH);
1096 * Z_BUF_ERROR is special, it just means we need more
1097 * output space. We'll handle that below. Treat any other
1100 if (ret != Z_BUF_ERROR) {
1101 log_err("fio: deflate log (%d)\n", ret);
1102 flist_del(&c->list);
1109 c->len = GZ_CHUNK - stream.avail_out;
1111 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1113 if (ret != Z_STREAM_END) {
1115 c = get_new_chunk(seq);
1116 stream.avail_out = GZ_CHUNK;
1117 stream.next_out = c->buf;
1118 ret = deflate(&stream, Z_FINISH);
1119 c->len = GZ_CHUNK - stream.avail_out;
1121 flist_add_tail(&c->list, &list);
1122 dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, c->len);
1123 } while (ret != Z_STREAM_END);
1126 dprint(FD_COMPRESS, "deflated to size=%lu\n", (unsigned long) total);
1128 ret = deflateEnd(&stream);
1130 log_err("fio: deflateEnd %d\n", ret);
1132 free(data->samples);
1134 if (!flist_empty(&list)) {
1135 pthread_mutex_lock(&data->log->chunk_lock);
1136 flist_splice_tail(&list, &data->log->chunk_list);
1137 pthread_mutex_unlock(&data->log->chunk_lock);
1146 while (!flist_empty(&list)) {
1147 c = flist_first_entry(list.next, struct iolog_compress, list);
1148 flist_del(&c->list);
1156 * Invoked from our compress helper thread, when logging would have exceeded
1157 * the specified memory limitation. Compresses the previously stored
1160 static int gz_work_async(struct submit_worker *sw, struct workqueue_work *work)
1162 return gz_work(container_of(work, struct iolog_flush_data, work));
1165 static int gz_init_worker(struct submit_worker *sw)
1167 struct thread_data *td = sw->wq->td;
1169 if (!fio_option_is_set(&td->o, log_gz_cpumask))
1172 if (fio_setaffinity(gettid(), td->o.log_gz_cpumask) == -1) {
1173 log_err("gz: failed to set CPU affinity\n");
1180 static struct workqueue_ops log_compress_wq_ops = {
1181 .fn = gz_work_async,
1182 .init_worker_fn = gz_init_worker,
1186 int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out)
1188 if (!(td->flags & TD_F_COMPRESS_LOG))
1191 workqueue_init(td, &td->log_compress_wq, &log_compress_wq_ops, 1, sk_out);
1195 void iolog_compress_exit(struct thread_data *td)
1197 if (!(td->flags & TD_F_COMPRESS_LOG))
1200 workqueue_exit(&td->log_compress_wq);
1204 * Queue work item to compress the existing log entries. We reset the
1205 * current log to a small size, and reference the existing log in the
1206 * data that we queue for compression. Once compression has been done,
1207 * this old log is freed. If called with finish == true, will not return
1208 * until the log compression has completed, and will flush all previous
1211 static int iolog_flush(struct io_log *log)
1213 struct iolog_flush_data *data;
1215 data = malloc(sizeof(*data));
1222 while (!flist_empty(&log->io_logs)) {
1223 struct io_logs *cur_log;
1225 cur_log = flist_first_entry(&log->io_logs, struct io_logs, list);
1226 flist_del_init(&cur_log->list);
1228 data->samples = cur_log->log;
1229 data->nr_samples = cur_log->nr_samples;
1240 int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
1242 struct iolog_flush_data *data;
1244 data = malloc(sizeof(*data));
1250 data->samples = cur_log->log;
1251 data->nr_samples = cur_log->nr_samples;
1254 cur_log->nr_samples = cur_log->max_samples = 0;
1255 cur_log->log = NULL;
1257 workqueue_enqueue(&log->td->log_compress_wq, &data->work);
1262 static int iolog_flush(struct io_log *log)
1267 int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log)
1272 int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out)
1277 void iolog_compress_exit(struct thread_data *td)
1283 struct io_logs *iolog_cur_log(struct io_log *log)
1285 if (flist_empty(&log->io_logs))
1288 return flist_last_entry(&log->io_logs, struct io_logs, list);
1291 uint64_t iolog_nr_samples(struct io_log *iolog)
1293 struct flist_head *entry;
1296 flist_for_each(entry, &iolog->io_logs) {
1297 struct io_logs *cur_log;
1299 cur_log = flist_entry(entry, struct io_logs, list);
1300 ret += cur_log->nr_samples;
1306 static int __write_log(struct thread_data *td, struct io_log *log, int try)
1309 return finish_log(td, log, try);
1314 static int write_iops_log(struct thread_data *td, int try, bool unit_log)
1318 if (per_unit_log(td->iops_log) != unit_log)
1321 ret = __write_log(td, td->iops_log, try);
1323 td->iops_log = NULL;
1328 static int write_slat_log(struct thread_data *td, int try, bool unit_log)
1335 ret = __write_log(td, td->slat_log, try);
1337 td->slat_log = NULL;
1342 static int write_clat_log(struct thread_data *td, int try, bool unit_log)
1349 ret = __write_log(td, td->clat_log, try);
1351 td->clat_log = NULL;
1356 static int write_lat_log(struct thread_data *td, int try, bool unit_log)
1363 ret = __write_log(td, td->lat_log, try);
1370 static int write_bandw_log(struct thread_data *td, int try, bool unit_log)
1374 if (per_unit_log(td->bw_log) != unit_log)
1377 ret = __write_log(td, td->bw_log, try);
1396 int (*fn)(struct thread_data *, int, bool);
1399 static struct log_type log_types[] = {
1401 .mask = BW_LOG_MASK,
1402 .fn = write_bandw_log,
1405 .mask = LAT_LOG_MASK,
1406 .fn = write_lat_log,
1409 .mask = SLAT_LOG_MASK,
1410 .fn = write_slat_log,
1413 .mask = CLAT_LOG_MASK,
1414 .fn = write_clat_log,
1417 .mask = IOPS_LOG_MASK,
1418 .fn = write_iops_log,
1422 void td_writeout_logs(struct thread_data *td, bool unit_logs)
1424 unsigned int log_mask = 0;
1425 unsigned int log_left = ALL_LOG_NR;
1428 old_state = td_bump_runstate(td, TD_FINISHING);
1430 finalize_logs(td, unit_logs);
1433 int prev_log_left = log_left;
1435 for (i = 0; i < ALL_LOG_NR && log_left; i++) {
1436 struct log_type *lt = &log_types[i];
1439 if (!(log_mask & lt->mask)) {
1440 ret = lt->fn(td, log_left != 1, unit_logs);
1443 log_mask |= lt->mask;
1448 if (prev_log_left == log_left)
1452 td_restore_runstate(td, old_state);
1455 void fio_writeout_logs(bool unit_logs)
1457 struct thread_data *td;
1461 td_writeout_logs(td, unit_logs);