*/
#include <stdio.h>
#include <stdlib.h>
-#include <sys/stat.h>
#include <sys/ioctl.h>
#include <linux/fs.h>
-#include <dirent.h>
#include "flist.h"
#include "fio.h"
* Check if this is a blktrace binary data file. We read a single trace
* into memory and check for the magic signature.
*/
-int is_blktrace(const char *filename, int *need_swap)
+bool is_blktrace(const char *filename, int *need_swap)
{
struct blk_io_trace t;
int fd, ret;
fd = open(filename, O_RDONLY);
if (fd < 0)
- return 0;
+ return false;
ret = read(fd, &t, sizeof(t));
close(fd);
if (ret < 0) {
perror("read blktrace");
- return 0;
+ return false;
} else if (ret != sizeof(t)) {
log_err("fio: short read on blktrace file\n");
- return 0;
+ return false;
}
if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
*need_swap = 0;
- return 1;
+ return true;
}
/*
t.magic = fio_swap32(t.magic);
if ((t.magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) {
*need_swap = 1;
- return 1;
+ return true;
}
- return 0;
+ return false;
}
#define FMINORBITS 20
unsigned int bytes, int rw, unsigned long long ttime,
int fileno, unsigned int bs)
{
- struct io_piece *ipo = malloc(sizeof(*ipo));
+ struct io_piece *ipo;
+ ipo = calloc(1, sizeof(*ipo));
init_ipo(ipo);
ipo->offset = offset * bs;
unsigned long long ttime,
unsigned long *ios, unsigned int *rw_bs)
{
- struct io_piece *ipo = malloc(sizeof(*ipo));
+ struct io_piece *ipo;
unsigned int bs;
int fileno;
+ if (td->o.replay_skip & (1u << DDIR_TRIM))
+ return;
+
+ ipo = calloc(1, sizeof(*ipo));
init_ipo(ipo);
fileno = trace_add_file(td, t->device, &bs);
td->o.size += t->bytes;
- memset(ipo, 0, sizeof(*ipo));
INIT_FLIST_HEAD(&ipo->list);
ipo->offset = t->sector * bs;
queue_io_piece(td, ipo);
}
+static void dump_trace(struct blk_io_trace *t)
+{
+ log_err("blktrace: ignoring zero byte trace: action=%x\n", t->action);
+}
+
static void handle_trace_fs(struct thread_data *td, struct blk_io_trace *t,
unsigned long long ttime, unsigned long *ios,
unsigned int *rw_bs)
rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
+ if (rw) {
+ if (td->o.replay_skip & (1u << DDIR_WRITE))
+ return;
+ } else {
+ if (td->o.replay_skip & (1u << DDIR_READ))
+ return;
+ }
+
+ if (!t->bytes) {
+ if (!fio_did_warn(FIO_WARN_BTRACE_ZERO))
+ dump_trace(t);
+ return;
+ }
+
if (t->bytes > rw_bs[rw])
rw_bs[rw] = t->bytes;
store_ipo(td, t->sector, t->bytes, rw, ttime, fileno, bs);
}
+static void handle_trace_flush(struct thread_data *td, struct blk_io_trace *t,
+ unsigned long long ttime, unsigned long *ios)
+{
+ struct io_piece *ipo;
+ unsigned int bs;
+ int fileno;
+
+ if (td->o.replay_skip & (1u << DDIR_SYNC))
+ return;
+
+ ipo = calloc(1, sizeof(*ipo));
+ init_ipo(ipo);
+ fileno = trace_add_file(td, t->device, &bs);
+
+ ipo->delay = ttime / 1000;
+ ipo->ddir = DDIR_SYNC;
+ ipo->fileno = fileno;
+
+ ios[DDIR_SYNC]++;
+ dprint(FD_BLKTRACE, "store flush delay=%lu\n", ipo->delay);
+ queue_io_piece(td, ipo);
+}
+
/*
* We only care for queue traces, most of the others are side effects
* due to internal workings of the block layer.
return;
if (!(t->action & BLK_TC_ACT(BLK_TC_NOTIFY))) {
- if (!last_ttime || td->o.no_stall) {
- last_ttime = t->time;
+ if (!last_ttime || td->o.no_stall)
delay = 0;
- } else {
+ else if (td->o.replay_time_scale == 100)
delay = t->time - last_ttime;
- last_ttime = t->time;
+ else {
+ double tmp = t->time - last_ttime;
+ double scale;
+
+ scale = (double) 100.0 / (double) td->o.replay_time_scale;
+ tmp *= scale;
+ delay = tmp;
}
+ last_ttime = t->time;
}
t_bytes_align(&td->o, t);
handle_trace_notify(t);
else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
handle_trace_discard(td, t, delay, ios, bs);
+ else if (t->action & BLK_TC_ACT(BLK_TC_FLUSH))
+ handle_trace_flush(td, t, delay, ios);
else
handle_trace_fs(td, t, delay, ios, bs);
}
t->pdu_len = fio_swap16(t->pdu_len);
}
-static int t_is_write(struct blk_io_trace *t)
+static bool t_is_write(struct blk_io_trace *t)
{
return (t->action & BLK_TC_ACT(BLK_TC_WRITE | BLK_TC_DISCARD)) != 0;
}
* Load a blktrace file by reading all the blk_io_trace entries, and storing
* them as io_pieces like the fio text version would do.
*/
-int load_blktrace(struct thread_data *td, const char *filename, int need_swap)
+bool load_blktrace(struct thread_data *td, const char *filename, int need_swap)
{
struct blk_io_trace t;
- unsigned long ios[DDIR_RWDIR_CNT], skipped_writes;
- unsigned int rw_bs[DDIR_RWDIR_CNT];
+ unsigned long ios[DDIR_RWDIR_SYNC_CNT] = { };
+ unsigned int rw_bs[DDIR_RWDIR_CNT] = { };
+ unsigned long skipped_writes;
struct fifo *fifo;
- int fd, i, old_state;
+ int fd, i, old_state, max_depth;
struct fio_file *f;
- int this_depth[DDIR_RWDIR_CNT], depth[DDIR_RWDIR_CNT], max_depth;
+ int this_depth[DDIR_RWDIR_CNT] = { };
+ int depth[DDIR_RWDIR_CNT] = { };
fd = open(filename, O_RDONLY);
if (fd < 0) {
td_verror(td, errno, "open blktrace file");
- return 1;
+ return false;
}
fifo = fifo_alloc(TRACE_FIFO_SIZE);
old_state = td_bump_runstate(td, TD_SETTING_UP);
td->o.size = 0;
-
- for (i = 0; i < DDIR_RWDIR_CNT; i++) {
- ios[i] = 0;
- rw_bs[i] = 0;
- this_depth[i] = 0;
- depth[i] = 0;
- }
-
skipped_writes = 0;
do {
int ret = trace_fifo_get(td, fifo, fd, &t, sizeof(t));
if (!td->files_index) {
log_err("fio: did not find replay device(s)\n");
- return 1;
+ return false;
}
/*
log_err("fio: %s skips replay of %lu writes due to read-only\n",
td->o.name, skipped_writes);
- if (!ios[DDIR_READ] && !ios[DDIR_WRITE]) {
+ if (!ios[DDIR_READ] && !ios[DDIR_WRITE] && !ios[DDIR_TRIM] &&
+ !ios[DDIR_SYNC]) {
log_err("fio: found no ios in blktrace data\n");
- return 1;
+ return false;
} else if (ios[DDIR_READ] && !ios[DDIR_WRITE]) {
td->o.td_ddir = TD_DDIR_READ;
td->o.max_bs[DDIR_READ] = rw_bs[DDIR_READ];
if (!fio_option_is_set(&td->o, iodepth))
td->o.iodepth = td->o.iodepth_low = max_depth;
- return 0;
+ return true;
err:
close(fd);
fifo_free(fifo);
- return 1;
+ return false;
}
projects / fio.git / blobdiff