diff options
Diffstat (limited to 'iolog.c')
| -rw-r--r-- | iolog.c | 1587 |
1 files changed, 0 insertions, 1587 deletions
diff --git a/iolog.c b/iolog.c deleted file mode 100644 index 31d674c2..00000000 --- a/iolog.c +++ /dev/null @@ -1,1587 +0,0 @@ -/* - * Code related to writing an iolog of what a thread is doing, and to - * later read that back and replay - */ -#include <stdio.h> -#include <stdlib.h> -#include <libgen.h> -#include <assert.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> -#ifdef CONFIG_ZLIB -#include <zlib.h> -#endif - -#include "flist.h" -#include "fio.h" -#include "verify.h" -#include "trim.h" -#include "filelock.h" -#include "smalloc.h" - -static int iolog_flush(struct io_log *log); - -static const char iolog_ver2[] = "fio version 2 iolog"; - -void queue_io_piece(struct thread_data *td, struct io_piece *ipo) -{ - flist_add_tail(&ipo->list, &td->io_log_list); - td->total_io_size += ipo->len; -} - -void log_io_u(const struct thread_data *td, const struct io_u *io_u) -{ - if (!td->o.write_iolog_file) - return; - - fprintf(td->iolog_f, "%s %s %llu %lu\n", io_u->file->file_name, - io_ddir_name(io_u->ddir), - io_u->offset, io_u->buflen); -} - -void log_file(struct thread_data *td, struct fio_file *f, - enum file_log_act what) -{ - const char *act[] = { "add", "open", "close" }; - - assert(what < 3); - - if (!td->o.write_iolog_file) - return; - - - /* - * this happens on the pre-open/close done before the job starts - */ - if (!td->iolog_f) - return; - - fprintf(td->iolog_f, "%s %s\n", f->file_name, act[what]); -} - -static void iolog_delay(struct thread_data *td, unsigned long delay) -{ - uint64_t usec = utime_since_now(&td->last_issue); - uint64_t this_delay; - struct timeval tv; - - if (delay < td->time_offset) { - td->time_offset = 0; - return; - } - - delay -= td->time_offset; - if (delay < usec) - return; - - delay -= usec; - - fio_gettime(&tv, NULL); - while (delay && !td->terminate) { - this_delay = delay; - if (this_delay > 500000) - this_delay = 500000; - - usec_sleep(td, this_delay); - delay -= this_delay; - } - - usec = utime_since_now(&tv); - if (usec > delay) - td->time_offset = usec - delay; - else - td->time_offset = 0; -} - -static int ipo_special(struct thread_data *td, struct io_piece *ipo) -{ - struct fio_file *f; - int ret; - - /* - * Not a special ipo - */ - if (ipo->ddir != DDIR_INVAL) - return 0; - - f = td->files[ipo->fileno]; - - switch (ipo->file_action) { - case FIO_LOG_OPEN_FILE: - if (td->o.replay_redirect && fio_file_open(f)) { - dprint(FD_FILE, "iolog: ignoring re-open of file %s\n", - f->file_name); - break; - } - ret = td_io_open_file(td, f); - if (!ret) - break; - td_verror(td, ret, "iolog open file"); - return -1; - case FIO_LOG_CLOSE_FILE: - td_io_close_file(td, f); - break; - case FIO_LOG_UNLINK_FILE: - td_io_unlink_file(td, f); - break; - default: - log_err("fio: bad file action %d\n", ipo->file_action); - break; - } - - return 1; -} - -int read_iolog_get(struct thread_data *td, struct io_u *io_u) -{ - struct io_piece *ipo; - unsigned long elapsed; - - while (!flist_empty(&td->io_log_list)) { - int ret; - - ipo = flist_first_entry(&td->io_log_list, struct io_piece, list); - flist_del(&ipo->list); - remove_trim_entry(td, ipo); - - ret = ipo_special(td, ipo); - if (ret < 0) { - free(ipo); - break; - } else if (ret > 0) { - free(ipo); - continue; - } - - io_u->ddir = ipo->ddir; - if (ipo->ddir != DDIR_WAIT) { - io_u->offset = ipo->offset; - io_u->buflen = ipo->len; - io_u->file = td->files[ipo->fileno]; - get_file(io_u->file); - dprint(FD_IO, "iolog: get %llu/%lu/%s\n", io_u->offset, - io_u->buflen, io_u->file->file_name); - if (ipo->delay) - iolog_delay(td, ipo->delay); - } else { - elapsed = mtime_since_genesis(); - if (ipo->delay > elapsed) - usec_sleep(td, (ipo->delay - elapsed) * 1000); - } - - free(ipo); - - if (io_u->ddir != DDIR_WAIT) - return 0; - } - - td->done = 1; - return 1; -} - -void prune_io_piece_log(struct thread_data *td) -{ - struct io_piece *ipo; - struct rb_node *n; - - while ((n = rb_first(&td->io_hist_tree)) != NULL) { - ipo = rb_entry(n, struct io_piece, rb_node); - rb_erase(n, &td->io_hist_tree); - remove_trim_entry(td, ipo); - td->io_hist_len--; - free(ipo); - } - - while (!flist_empty(&td->io_hist_list)) { - ipo = flist_first_entry(&td->io_hist_list, struct io_piece, list); - flist_del(&ipo->list); - remove_trim_entry(td, ipo); - td->io_hist_len--; - free(ipo); - } -} - -/* - * log a successful write, so we can unwind the log for verify - */ -void log_io_piece(struct thread_data *td, struct io_u *io_u) -{ - struct rb_node **p, *parent; - struct io_piece *ipo, *__ipo; - - ipo = malloc(sizeof(struct io_piece)); - init_ipo(ipo); - ipo->file = io_u->file; - ipo->offset = io_u->offset; - ipo->len = io_u->buflen; - ipo->numberio = io_u->numberio; - ipo->flags = IP_F_IN_FLIGHT; - - io_u->ipo = ipo; - - if (io_u_should_trim(td, io_u)) { - flist_add_tail(&ipo->trim_list, &td->trim_list); - td->trim_entries++; - } - - /* - * We don't need to sort the entries, if: - * - * Sequential writes, or - * Random writes that lay out the file as it goes along - * - * For both these cases, just reading back data in the order we - * wrote it out is the fastest. - * - * One exception is if we don't have a random map AND we are doing - * verifies, in that case we need to check for duplicate blocks and - * drop the old one, which we rely on the rb insert/lookup for - * handling. - */ - if (((!td->o.verifysort) || !td_random(td) || !td->o.overwrite) && - (file_randommap(td, ipo->file) || td->o.verify == VERIFY_NONE)) { - INIT_FLIST_HEAD(&ipo->list); - flist_add_tail(&ipo->list, &td->io_hist_list); - ipo->flags |= IP_F_ONLIST; - td->io_hist_len++; - return; - } - - RB_CLEAR_NODE(&ipo->rb_node); - - /* - * Sort the entry into the verification list - */ -restart: - p = &td->io_hist_tree.rb_node; - parent = NULL; - while (*p) { - int overlap = 0; - parent = *p; - - __ipo = rb_entry(parent, struct io_piece, rb_node); - if (ipo->file < __ipo->file) - p = &(*p)->rb_left; - else if (ipo->file > __ipo->file) - p = &(*p)->rb_right; - else if (ipo->offset < __ipo->offset) { - p = &(*p)->rb_left; - overlap = ipo->offset + ipo->len > __ipo->offset; - } - else if (ipo->offset > __ipo->offset) { - p = &(*p)->rb_right; - overlap = __ipo->offset + __ipo->len > ipo->offset; - } - else - overlap = 1; - - if (overlap) { - dprint(FD_IO, "iolog: overlap %llu/%lu, %llu/%lu\n", - __ipo->offset, __ipo->len, - ipo->offset, ipo->len); - td->io_hist_len--; - rb_erase(parent, &td->io_hist_tree); - remove_trim_entry(td, __ipo); - free(__ipo); - goto restart; - } - } - - rb_link_node(&ipo->rb_node, parent, p); - rb_insert_color(&ipo->rb_node, &td->io_hist_tree); - ipo->flags |= IP_F_ONRB; - td->io_hist_len++; -} - -void unlog_io_piece(struct thread_data *td, struct io_u *io_u) -{ - struct io_piece *ipo = io_u->ipo; - - if (td->ts.nr_block_infos) { - uint32_t *info = io_u_block_info(td, io_u); - if (BLOCK_INFO_STATE(*info) < BLOCK_STATE_TRIM_FAILURE) { - if (io_u->ddir == DDIR_TRIM) - *info = BLOCK_INFO_SET_STATE(*info, - BLOCK_STATE_TRIM_FAILURE); - else if (io_u->ddir == DDIR_WRITE) - *info = BLOCK_INFO_SET_STATE(*info, - BLOCK_STATE_WRITE_FAILURE); - } - } - - if (!ipo) - return; - - if (ipo->flags & IP_F_ONRB) - rb_erase(&ipo->rb_node, &td->io_hist_tree); - else if (ipo->flags & IP_F_ONLIST) - flist_del(&ipo->list); - - free(ipo); - io_u->ipo = NULL; - td->io_hist_len--; -} - -void trim_io_piece(struct thread_data *td, const struct io_u *io_u) -{ - struct io_piece *ipo = io_u->ipo; - - if (!ipo) - return; - - ipo->len = io_u->xfer_buflen - io_u->resid; -} - -void write_iolog_close(struct thread_data *td) -{ - fflush(td->iolog_f); - fclose(td->iolog_f); - free(td->iolog_buf); - td->iolog_f = NULL; - td->iolog_buf = NULL; -} - -/* - * Read version 2 iolog data. It is enhanced to include per-file logging, - * syncs, etc. - */ -static int read_iolog2(struct thread_data *td, FILE *f) -{ - unsigned long long offset; - unsigned int bytes; - int reads, writes, waits, fileno = 0, file_action = 0; /* stupid gcc */ - char *rfname, *fname, *act; - char *str, *p; - enum fio_ddir rw; - - free_release_files(td); - - /* - * Read in the read iolog and store it, reuse the infrastructure - * for doing verifications. - */ - str = malloc(4096); - rfname = fname = malloc(256+16); - act = malloc(256+16); - - reads = writes = waits = 0; - while ((p = fgets(str, 4096, f)) != NULL) { - struct io_piece *ipo; - int r; - - r = sscanf(p, "%256s %256s %llu %u", rfname, act, &offset, - &bytes); - - if (td->o.replay_redirect) - fname = td->o.replay_redirect; - - if (r == 4) { - /* - * Check action first - */ - if (!strcmp(act, "wait")) - rw = DDIR_WAIT; - else if (!strcmp(act, "read")) - rw = DDIR_READ; - else if (!strcmp(act, "write")) - rw = DDIR_WRITE; - else if (!strcmp(act, "sync")) - rw = DDIR_SYNC; - else if (!strcmp(act, "datasync")) - rw = DDIR_DATASYNC; - else if (!strcmp(act, "trim")) - rw = DDIR_TRIM; - else { - log_err("fio: bad iolog file action: %s\n", - act); - continue; - } - fileno = get_fileno(td, fname); - } else if (r == 2) { - rw = DDIR_INVAL; - if (!strcmp(act, "add")) { - if (td->o.replay_redirect && - get_fileno(td, fname) != -1) { - dprint(FD_FILE, "iolog: ignoring" - " re-add of file %s\n", fname); - } else { - fileno = add_file(td, fname, 0, 1); - file_action = FIO_LOG_ADD_FILE; - } - continue; - } else if (!strcmp(act, "open")) { - fileno = get_fileno(td, fname); - file_action = FIO_LOG_OPEN_FILE; - } else if (!strcmp(act, "close")) { - fileno = get_fileno(td, fname); - file_action = FIO_LOG_CLOSE_FILE; - } else { - log_err("fio: bad iolog file action: %s\n", - act); - continue; - } - } else { - log_err("bad iolog2: %s\n", p); - continue; - } - - if (rw == DDIR_READ) - reads++; - else if (rw == DDIR_WRITE) { - /* - * Don't add a write for ro mode - */ - if (read_only) - continue; - writes++; - } else if (rw == DDIR_WAIT) { - if (td->o.no_stall) - continue; - waits++; - } else if (rw == DDIR_INVAL) { - } else if (!ddir_sync(rw)) { - log_err("bad ddir: %d\n", rw); - continue; - } - - /* - * Make note of file - */ - ipo = malloc(sizeof(*ipo)); - init_ipo(ipo); - ipo->ddir = rw; - if (rw == DDIR_WAIT) { - ipo->delay = offset; - } else { - if (td->o.replay_scale) - ipo->offset = offset / td->o.replay_scale; - else - ipo->offset = offset; - ipo_bytes_align(td->o.replay_align, ipo); - - ipo->len = bytes; - if (rw != DDIR_INVAL && bytes > td->o.max_bs[rw]) - td->o.max_bs[rw] = bytes; - ipo->fileno = fileno; - ipo->file_action = file_action; - td->o.size += bytes; - } - - queue_io_piece(td, ipo); - } - - free(str); - free(act); - free(rfname); - - if (writes && read_only) { - log_err("fio: <%s> skips replay of %d writes due to" - " read-only\n", td->o.name, writes); - writes = 0; - } - - if (!reads && !writes && !waits) - return 1; - else if (reads && !writes) - td->o.td_ddir = TD_DDIR_READ; - else if (!reads && writes) - td->o.td_ddir = TD_DDIR_WRITE; - else - td->o.td_ddir = TD_DDIR_RW; - - return 0; -} - -/* - * open iolog, check version, and call appropriate parser - */ -static int init_iolog_read(struct thread_data *td) -{ - char buffer[256], *p; - FILE *f; - int ret; - - f = fopen(td->o.read_iolog_file, "r"); - if (!f) { - perror("fopen read iolog"); - return 1; - } - - p = fgets(buffer, sizeof(buffer), f); - if (!p) { - td_verror(td, errno, "iolog read"); - log_err("fio: unable to read iolog\n"); - fclose(f); - return 1; - } - - /* - * version 2 of the iolog stores a specific string as the - * first line, check for that - */ - if (!strncmp(iolog_ver2, buffer, strlen(iolog_ver2))) - ret = read_iolog2(td, f); - else { - log_err("fio: iolog version 1 is no longer supported\n"); - ret = 1; - } - - fclose(f); - return ret; -} - -/* - * Set up a log for storing io patterns. - */ -static int init_iolog_write(struct thread_data *td) -{ - struct fio_file *ff; - FILE *f; - unsigned int i; - - f = fopen(td->o.write_iolog_file, "a"); - if (!f) { - perror("fopen write iolog"); - return 1; - } - - /* - * That's it for writing, setup a log buffer and we're done. - */ - td->iolog_f = f; - td->iolog_buf = malloc(8192); - setvbuf(f, td->iolog_buf, _IOFBF, 8192); - - /* - * write our version line - */ - if (fprintf(f, "%s\n", iolog_ver2) < 0) { - perror("iolog init\n"); - return 1; - } - - /* - * add all known files - */ - for_each_file(td, ff, i) - log_file(td, ff, FIO_LOG_ADD_FILE); - - return 0; -} - -int init_iolog(struct thread_data *td) -{ - int ret = 0; - - if (td->o.read_iolog_file) { - int need_swap; - - /* - * Check if it's a blktrace file and load that if possible. - * Otherwise assume it's a normal log file and load that. - */ - if (is_blktrace(td->o.read_iolog_file, &need_swap)) - ret = load_blktrace(td, td->o.read_iolog_file, need_swap); - else - ret = init_iolog_read(td); - } else if (td->o.write_iolog_file) - ret = init_iolog_write(td); - - if (ret) - td_verror(td, EINVAL, "failed initializing iolog"); - - return ret; -} - -void setup_log(struct io_log **log, struct log_params *p, - const char *filename) -{ - struct io_log *l; - int i; - struct io_u_plat_entry *entry; - struct flist_head *list; - - l = scalloc(1, sizeof(*l)); - INIT_FLIST_HEAD(&l->io_logs); - l->log_type = p->log_type; - l->log_offset = p->log_offset; - l->log_gz = p->log_gz; - l->log_gz_store = p->log_gz_store; - l->avg_msec = p->avg_msec; - l->hist_msec = p->hist_msec; - l->hist_coarseness = p->hist_coarseness; - l->filename = strdup(filename); - l->td = p->td; - - /* Initialize histogram lists for each r/w direction, - * with initial io_u_plat of all zeros: - */ - for (i = 0; i < DDIR_RWDIR_CNT; i++) { - list = &l->hist_window[i].list; - INIT_FLIST_HEAD(list); - entry = calloc(1, sizeof(struct io_u_plat_entry)); - flist_add(&entry->list, list); - } - - if (l->td && l->td->o.io_submit_mode != IO_MODE_OFFLOAD) { - struct io_logs *p; - - p = calloc(1, sizeof(*l->pending)); - p->max_samples = DEF_LOG_ENTRIES; - p->log = calloc(p->max_samples, log_entry_sz(l)); - l->pending = p; - } - - if (l->log_offset) - l->log_ddir_mask = LOG_OFFSET_SAMPLE_BIT; - - INIT_FLIST_HEAD(&l->chunk_list); - - if (l->log_gz && !p->td) - l->log_gz = 0; - else if (l->log_gz || l->log_gz_store) { - mutex_init_pshared(&l->chunk_lock); - p->td->flags |= TD_F_COMPRESS_LOG; - } - - *log = l; -} - -#ifdef CONFIG_SETVBUF -static void *set_file_buffer(FILE *f) -{ - size_t size = 1048576; - void *buf; - - buf = malloc(size); - setvbuf(f, buf, _IOFBF, size); - return buf; -} - -static void clear_file_buffer(void *buf) -{ - free(buf); -} -#else -static void *set_file_buffer(FILE *f) -{ - return NULL; -} - -static void clear_file_buffer(void *buf) -{ -} -#endif - -void free_log(struct io_log *log) -{ - while (!flist_empty(&log->io_logs)) { - struct io_logs *cur_log; - - cur_log = flist_first_entry(&log->io_logs, struct io_logs, list); - flist_del_init(&cur_log->list); - free(cur_log->log); - sfree(cur_log); - } - - if (log->pending) { - free(log->pending->log); - free(log->pending); - log->pending = NULL; - } - - free(log->pending); - free(log->filename); - sfree(log); -} - -unsigned long hist_sum(int j, int stride, unsigned int *io_u_plat, - unsigned int *io_u_plat_last) -{ - unsigned long sum; - int k; - - if (io_u_plat_last) { - for (k = sum = 0; k < stride; k++) - sum += io_u_plat[j + k] - io_u_plat_last[j + k]; - } else { - for (k = sum = 0; k < stride; k++) - sum += io_u_plat[j + k]; - } - - return sum; -} - -static void flush_hist_samples(FILE *f, int hist_coarseness, void *samples, - uint64_t sample_size) -{ - struct io_sample *s; - int log_offset; - uint64_t i, j, nr_samples; - struct io_u_plat_entry *entry, *entry_before; - unsigned int *io_u_plat; - unsigned int *io_u_plat_before; - - int stride = 1 << hist_coarseness; - - if (!sample_size) - return; - - s = __get_sample(samples, 0, 0); - log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0; - - nr_samples = sample_size / __log_entry_sz(log_offset); - - for (i = 0; i < nr_samples; i++) { - s = __get_sample(samples, log_offset, i); - - entry = s->data.plat_entry; - io_u_plat = entry->io_u_plat; - - entry_before = flist_first_entry(&entry->list, struct io_u_plat_entry, list); - io_u_plat_before = entry_before->io_u_plat; - - fprintf(f, "%lu, %u, %u, ", (unsigned long) s->time, - io_sample_ddir(s), s->bs); - for (j = 0; j < FIO_IO_U_PLAT_NR - stride; j += stride) { - fprintf(f, "%lu, ", hist_sum(j, stride, io_u_plat, - io_u_plat_before)); - } - fprintf(f, "%lu\n", (unsigned long) - hist_sum(FIO_IO_U_PLAT_NR - stride, stride, io_u_plat, - io_u_plat_before)); - - flist_del(&entry_before->list); - free(entry_before); - } -} - -void flush_samples(FILE *f, void *samples, uint64_t sample_size) -{ - struct io_sample *s; - int log_offset; - uint64_t i, nr_samples; - - if (!sample_size) - return; - - s = __get_sample(samples, 0, 0); - log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0; - - nr_samples = sample_size / __log_entry_sz(log_offset); - - for (i = 0; i < nr_samples; i++) { - s = __get_sample(samples, log_offset, i); - - if (!log_offset) { - fprintf(f, "%lu, %" PRId64 ", %u, %u\n", - (unsigned long) s->time, - s->data.val, - io_sample_ddir(s), s->bs); - } else { - struct io_sample_offset *so = (void *) s; - - fprintf(f, "%lu, %" PRId64 ", %u, %u, %llu\n", - (unsigned long) s->time, - s->data.val, - io_sample_ddir(s), s->bs, - (unsigned long long) so->offset); - } - } -} - -#ifdef CONFIG_ZLIB - -struct iolog_flush_data { - struct workqueue_work work; - struct io_log *log; - void *samples; - uint32_t nr_samples; - bool free; -}; - -#define GZ_CHUNK 131072 - -static struct iolog_compress *get_new_chunk(unsigned int seq) -{ - struct iolog_compress *c; - - c = malloc(sizeof(*c)); - INIT_FLIST_HEAD(&c->list); - c->buf = malloc(GZ_CHUNK); - c->len = 0; - c->seq = seq; - return c; -} - -static void free_chunk(struct iolog_compress *ic) -{ - free(ic->buf); - free(ic); -} - -static int z_stream_init(z_stream *stream, int gz_hdr) -{ - int wbits = 15; - - memset(stream, 0, sizeof(*stream)); - stream->zalloc = Z_NULL; - stream->zfree = Z_NULL; - stream->opaque = Z_NULL; - stream->next_in = Z_NULL; - - /* - * zlib magic - add 32 for auto-detection of gz header or not, - * if we decide to store files in a gzip friendly format. - */ - if (gz_hdr) - wbits += 32; - - if (inflateInit2(stream, wbits) != Z_OK) - return 1; - - return 0; -} - -struct inflate_chunk_iter { - unsigned int seq; - int err; - void *buf; - size_t buf_size; - size_t buf_used; - size_t chunk_sz; -}; - -static void finish_chunk(z_stream *stream, FILE *f, - struct inflate_chunk_iter *iter) -{ - int ret; - - ret = inflateEnd(stream); - if (ret != Z_OK) - log_err("fio: failed to end log inflation seq %d (%d)\n", - iter->seq, ret); - - flush_samples(f, iter->buf, iter->buf_used); - free(iter->buf); - iter->buf = NULL; - iter->buf_size = iter->buf_used = 0; -} - -/* - * Iterative chunk inflation. Handles cases where we cross into a new - * sequence, doing flush finish of previous chunk if needed. - */ -static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f, - z_stream *stream, struct inflate_chunk_iter *iter) -{ - size_t ret; - - dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u\n", - (unsigned long) ic->len, ic->seq); - - if (ic->seq != iter->seq) { - if (iter->seq) - finish_chunk(stream, f, iter); - - z_stream_init(stream, gz_hdr); - iter->seq = ic->seq; - } - - stream->avail_in = ic->len; - stream->next_in = ic->buf; - - if (!iter->buf_size) { - iter->buf_size = iter->chunk_sz; - iter->buf = malloc(iter->buf_size); - } - - while (stream->avail_in) { - size_t this_out = iter->buf_size - iter->buf_used; - int err; - - stream->avail_out = this_out; - stream->next_out = iter->buf + iter->buf_used; - - err = inflate(stream, Z_NO_FLUSH); - if (err < 0) { - log_err("fio: failed inflating log: %d\n", err); - iter->err = err; - break; - } - - iter->buf_used += this_out - stream->avail_out; - - if (!stream->avail_out) { - iter->buf_size += iter->chunk_sz; - iter->buf = realloc(iter->buf, iter->buf_size); - continue; - } - - if (err == Z_STREAM_END) - break; - } - - ret = (void *) stream->next_in - ic->buf; - - dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) iter->buf_size); - - return ret; -} - -/* - * Inflate stored compressed chunks, or write them directly to the log - * file if so instructed. - */ -static int inflate_gz_chunks(struct io_log *log, FILE *f) -{ - struct inflate_chunk_iter iter = { .chunk_sz = log->log_gz, }; - z_stream stream; - - while (!flist_empty(&log->chunk_list)) { - struct iolog_compress *ic; - - ic = flist_first_entry(&log->chunk_list, struct iolog_compress, list); - flist_del(&ic->list); - - if (log->log_gz_store) { - size_t ret; - - dprint(FD_COMPRESS, "log write chunk size=%lu, " - "seq=%u\n", (unsigned long) ic->len, ic->seq); - - ret = fwrite(ic->buf, ic->len, 1, f); - if (ret != 1 || ferror(f)) { - iter.err = errno; - log_err("fio: error writing compressed log\n"); - } - } else - inflate_chunk(ic, log->log_gz_store, f, &stream, &iter); - - free_chunk(ic); - } - - if (iter.seq) { - finish_chunk(&stream, f, &iter); - free(iter.buf); - } - - return iter.err; -} - -/* - * Open compressed log file and decompress the stored chunks and - * write them to stdout. The chunks are stored sequentially in the - * file, so we iterate over them and do them one-by-one. - */ -int iolog_file_inflate(const char *file) -{ - struct inflate_chunk_iter iter = { .chunk_sz = 64 * 1024 * 1024, }; - struct iolog_compress ic; - z_stream stream; - struct stat sb; - ssize_t ret; - size_t total; - void *buf; - FILE *f; - - f = fopen(file, "r"); - if (!f) { - perror("fopen"); - return 1; - } - - if (stat(file, &sb) < 0) { - fclose(f); - perror("stat"); - return 1; - } - - ic.buf = buf = malloc(sb.st_size); - ic.len = sb.st_size; - ic.seq = 1; - - ret = fread(ic.buf, ic.len, 1, f); - if (ret < 0) { - perror("fread"); - fclose(f); - free(buf); - return 1; - } else if (ret != 1) { - log_err("fio: short read on reading log\n"); - fclose(f); - free(buf); - return 1; - } - - fclose(f); - - /* - * Each chunk will return Z_STREAM_END. We don't know how many - * chunks are in the file, so we just keep looping and incrementing - * the sequence number until we have consumed the whole compressed - * file. - */ - total = ic.len; - do { - size_t iret; - - iret = inflate_chunk(&ic, 1, stdout, &stream, &iter); - total -= iret; - if (!total) - break; - if (iter.err) - break; - - ic.seq++; - ic.len -= iret; - ic.buf += iret; - } while (1); - - if (iter.seq) { - finish_chunk(&stream, stdout, &iter); - free(iter.buf); - } - - free(buf); - return iter.err; -} - -#else - -static int inflate_gz_chunks(struct io_log *log, FILE *f) -{ - return 0; -} - -int iolog_file_inflate(const char *file) -{ - log_err("fio: log inflation not possible without zlib\n"); - return 1; -} - -#endif - -void flush_log(struct io_log *log, bool do_append) -{ - void *buf; - FILE *f; - - if (!do_append) - f = fopen(log->filename, "w"); - else - f = fopen(log->filename, "a"); - if (!f) { - perror("fopen log"); - return; - } - - buf = set_file_buffer(f); - - inflate_gz_chunks(log, f); - - while (!flist_empty(&log->io_logs)) { - struct io_logs *cur_log; - - cur_log = flist_first_entry(&log->io_logs, struct io_logs, list); - flist_del_init(&cur_log->list); - - if (log->td && log == log->td->clat_hist_log) - flush_hist_samples(f, log->hist_coarseness, cur_log->log, - log_sample_sz(log, cur_log)); - else - flush_samples(f, cur_log->log, log_sample_sz(log, cur_log)); - - sfree(cur_log); - } - - fclose(f); - clear_file_buffer(buf); -} - -static int finish_log(struct thread_data *td, struct io_log *log, int trylock) -{ - if (td->flags & TD_F_COMPRESS_LOG) - iolog_flush(log); - - if (trylock) { - if (fio_trylock_file(log->filename)) - return 1; - } else - fio_lock_file(log->filename); - - if (td->client_type == FIO_CLIENT_TYPE_GUI || is_backend) - fio_send_iolog(td, log, log->filename); - else - flush_log(log, !td->o.per_job_logs); - - fio_unlock_file(log->filename); - free_log(log); - return 0; -} - -size_t log_chunk_sizes(struct io_log *log) -{ - struct flist_head *entry; - size_t ret; - - if (flist_empty(&log->chunk_list)) - return 0; - - ret = 0; - pthread_mutex_lock(&log->chunk_lock); - flist_for_each(entry, &log->chunk_list) { - struct iolog_compress *c; - - c = flist_entry(entry, struct iolog_compress, list); - ret += c->len; - } - pthread_mutex_unlock(&log->chunk_lock); - return ret; -} - -#ifdef CONFIG_ZLIB - -static int gz_work(struct iolog_flush_data *data) -{ - struct iolog_compress *c = NULL; - struct flist_head list; - unsigned int seq; - z_stream stream; - size_t total = 0; - int ret; - - INIT_FLIST_HEAD(&list); - - memset(&stream, 0, sizeof(stream)); - stream.zalloc = Z_NULL; - stream.zfree = Z_NULL; - stream.opaque = Z_NULL; - - ret = deflateInit(&stream, Z_DEFAULT_COMPRESSION); - if (ret != Z_OK) { - log_err("fio: failed to init gz stream\n"); - goto err; - } - - seq = ++data->log->chunk_seq; - - stream.next_in = (void *) data->samples; - stream.avail_in = data->nr_samples * log_entry_sz(data->log); - - dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u, log=%s\n", - (unsigned long) stream.avail_in, seq, - data->log->filename); - do { - if (c) - dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, - (unsigned long) c->len); - c = get_new_chunk(seq); - stream.avail_out = GZ_CHUNK; - stream.next_out = c->buf; - ret = deflate(&stream, Z_NO_FLUSH); - if (ret < 0) { - log_err("fio: deflate log (%d)\n", ret); - free_chunk(c); - goto err; - } - - c->len = GZ_CHUNK - stream.avail_out; - flist_add_tail(&c->list, &list); - total += c->len; - } while (stream.avail_in); - - stream.next_out = c->buf + c->len; - stream.avail_out = GZ_CHUNK - c->len; - - ret = deflate(&stream, Z_FINISH); - if (ret < 0) { - /* - * Z_BUF_ERROR is special, it just means we need more - * output space. We'll handle that below. Treat any other - * error as fatal. - */ - if (ret != Z_BUF_ERROR) { - log_err("fio: deflate log (%d)\n", ret); - flist_del(&c->list); - free_chunk(c); - goto err; - } - } - - total -= c->len; - c->len = GZ_CHUNK - stream.avail_out; - total += c->len; - dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, (unsigned long) c->len); - - if (ret != Z_STREAM_END) { - do { - c = get_new_chunk(seq); - stream.avail_out = GZ_CHUNK; - stream.next_out = c->buf; - ret = deflate(&stream, Z_FINISH); - c->len = GZ_CHUNK - stream.avail_out; - total += c->len; - flist_add_tail(&c->list, &list); - dprint(FD_COMPRESS, "seq=%d, chunk=%lu\n", seq, - (unsigned long) c->len); - } while (ret != Z_STREAM_END); - } - - dprint(FD_COMPRESS, "deflated to size=%lu\n", (unsigned long) total); - - ret = deflateEnd(&stream); - if (ret != Z_OK) - log_err("fio: deflateEnd %d\n", ret); - - free(data->samples); - - if (!flist_empty(&list)) { - pthread_mutex_lock(&data->log->chunk_lock); - flist_splice_tail(&list, &data->log->chunk_list); - pthread_mutex_unlock(&data->log->chunk_lock); - } - - ret = 0; -done: - if (data->free) - free(data); - return ret; -err: - while (!flist_empty(&list)) { - c = flist_first_entry(list.next, struct iolog_compress, list); - flist_del(&c->list); - free_chunk(c); - } - ret = 1; - goto done; -} - -/* - * Invoked from our compress helper thread, when logging would have exceeded - * the specified memory limitation. Compresses the previously stored - * entries. - */ -static int gz_work_async(struct submit_worker *sw, struct workqueue_work *work) -{ - return gz_work(container_of(work, struct iolog_flush_data, work)); -} - -static int gz_init_worker(struct submit_worker *sw) -{ - struct thread_data *td = sw->wq->td; - - if (!fio_option_is_set(&td->o, log_gz_cpumask)) - return 0; - - if (fio_setaffinity(gettid(), td->o.log_gz_cpumask) == -1) { - log_err("gz: failed to set CPU affinity\n"); - return 1; - } - - return 0; -} - -static struct workqueue_ops log_compress_wq_ops = { - .fn = gz_work_async, - .init_worker_fn = gz_init_worker, - .nice = 1, -}; - -int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out) -{ - if (!(td->flags & TD_F_COMPRESS_LOG)) - return 0; - - workqueue_init(td, &td->log_compress_wq, &log_compress_wq_ops, 1, sk_out); - return 0; -} - -void iolog_compress_exit(struct thread_data *td) -{ - if (!(td->flags & TD_F_COMPRESS_LOG)) - return; - - workqueue_exit(&td->log_compress_wq); -} - -/* - * Queue work item to compress the existing log entries. We reset the - * current log to a small size, and reference the existing log in the - * data that we queue for compression. Once compression has been done, - * this old log is freed. If called with finish == true, will not return - * until the log compression has completed, and will flush all previous - * logs too - */ -static int iolog_flush(struct io_log *log) -{ - struct iolog_flush_data *data; - - data = malloc(sizeof(*data)); - if (!data) - return 1; - - data->log = log; - data->free = false; - - while (!flist_empty(&log->io_logs)) { - struct io_logs *cur_log; - - cur_log = flist_first_entry(&log->io_logs, struct io_logs, list); - flist_del_init(&cur_log->list); - - data->samples = cur_log->log; - data->nr_samples = cur_log->nr_samples; - - sfree(cur_log); - - gz_work(data); - } - - free(data); - return 0; -} - -int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log) -{ - struct iolog_flush_data *data; - - data = malloc(sizeof(*data)); - if (!data) - return 1; - - data->log = log; - - data->samples = cur_log->log; - data->nr_samples = cur_log->nr_samples; - data->free = true; - - cur_log->nr_samples = cur_log->max_samples = 0; - cur_log->log = NULL; - - workqueue_enqueue(&log->td->log_compress_wq, &data->work); - return 0; -} -#else - -static int iolog_flush(struct io_log *log) -{ - return 1; -} - -int iolog_cur_flush(struct io_log *log, struct io_logs *cur_log) -{ - return 1; -} - -int iolog_compress_init(struct thread_data *td, struct sk_out *sk_out) -{ - return 0; -} - -void iolog_compress_exit(struct thread_data *td) -{ -} - -#endif - -struct io_logs *iolog_cur_log(struct io_log *log) -{ - if (flist_empty(&log->io_logs)) - return NULL; - - return flist_last_entry(&log->io_logs, struct io_logs, list); -} - -uint64_t iolog_nr_samples(struct io_log *iolog) -{ - struct flist_head *entry; - uint64_t ret = 0; - - flist_for_each(entry, &iolog->io_logs) { - struct io_logs *cur_log; - - cur_log = flist_entry(entry, struct io_logs, list); - ret += cur_log->nr_samples; - } - - return ret; -} - -static int __write_log(struct thread_data *td, struct io_log *log, int try) -{ - if (log) - return finish_log(td, log, try); - - return 0; -} - -static int write_iops_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (per_unit_log(td->iops_log) != unit_log) - return 0; - - ret = __write_log(td, td->iops_log, try); - if (!ret) - td->iops_log = NULL; - - return ret; -} - -static int write_slat_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (!unit_log) - return 0; - - ret = __write_log(td, td->slat_log, try); - if (!ret) - td->slat_log = NULL; - - return ret; -} - -static int write_clat_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (!unit_log) - return 0; - - ret = __write_log(td, td->clat_log, try); - if (!ret) - td->clat_log = NULL; - - return ret; -} - -static int write_clat_hist_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (!unit_log) - return 0; - - ret = __write_log(td, td->clat_hist_log, try); - if (!ret) - td->clat_hist_log = NULL; - - return ret; -} - -static int write_lat_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (!unit_log) - return 0; - - ret = __write_log(td, td->lat_log, try); - if (!ret) - td->lat_log = NULL; - - return ret; -} - -static int write_bandw_log(struct thread_data *td, int try, bool unit_log) -{ - int ret; - - if (per_unit_log(td->bw_log) != unit_log) - return 0; - - ret = __write_log(td, td->bw_log, try); - if (!ret) - td->bw_log = NULL; - - return ret; -} - -enum { - BW_LOG_MASK = 1, - LAT_LOG_MASK = 2, - SLAT_LOG_MASK = 4, - CLAT_LOG_MASK = 8, - IOPS_LOG_MASK = 16, - CLAT_HIST_LOG_MASK = 32, - - ALL_LOG_NR = 6, -}; - -struct log_type { - unsigned int mask; - int (*fn)(struct thread_data *, int, bool); -}; - -static struct log_type log_types[] = { - { - .mask = BW_LOG_MASK, - .fn = write_bandw_log, - }, - { - .mask = LAT_LOG_MASK, - .fn = write_lat_log, - }, - { - .mask = SLAT_LOG_MASK, - .fn = write_slat_log, - }, - { - .mask = CLAT_LOG_MASK, - .fn = write_clat_log, - }, - { - .mask = IOPS_LOG_MASK, - .fn = write_iops_log, - }, - { - .mask = CLAT_HIST_LOG_MASK, - .fn = write_clat_hist_log, - } -}; - -void td_writeout_logs(struct thread_data *td, bool unit_logs) -{ - unsigned int log_mask = 0; - unsigned int log_left = ALL_LOG_NR; - int old_state, i; - - old_state = td_bump_runstate(td, TD_FINISHING); - - finalize_logs(td, unit_logs); - - while (log_left) { - int prev_log_left = log_left; - - for (i = 0; i < ALL_LOG_NR && log_left; i++) { - struct log_type *lt = &log_types[i]; - int ret; - - if (!(log_mask & lt->mask)) { - ret = lt->fn(td, log_left != 1, unit_logs); - if (!ret) { - log_left--; - log_mask |= lt->mask; - } - } - } - - if (prev_log_left == log_left) - usleep(5000); - } - - td_restore_runstate(td, old_state); -} - -void fio_writeout_logs(bool unit_logs) -{ - struct thread_data *td; - int i; - - for_each_td(td, i) - td_writeout_logs(td, unit_logs); -} |