blob: 15e96aacbebdea4e21ab874a6df0511aed1c7b19 [file] [log] [blame]
/*
* This file contains job initialization and setup functions.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "fio.h"
#include "parse.h"
static char fio_version_string[] = "fio 1.14a";
#define FIO_RANDSEED (0xb1899bedUL)
static char **ini_file;
static int max_jobs = MAX_JOBS;
struct thread_data def_thread;
struct thread_data *threads = NULL;
int exitall_on_terminate = 0;
int terse_output = 0;
unsigned long long mlock_size = 0;
FILE *f_out = NULL;
FILE *f_err = NULL;
int write_bw_log = 0;
static int def_timeout = 0;
static int write_lat_log = 0;
static int prev_group_jobs;
/*
* Command line options. These will contain the above, plus a few
* extra that only pertain to fio itself and not jobs.
*/
static struct option long_options[FIO_NR_OPTIONS] = {
{
.name = "output",
.has_arg = required_argument,
.val = 'o',
},
{
.name = "timeout",
.has_arg = required_argument,
.val = 't',
},
{
.name = "latency-log",
.has_arg = required_argument,
.val = 'l',
},
{
.name = "bandwidth-log",
.has_arg = required_argument,
.val = 'b',
},
{
.name = "minimal",
.has_arg = optional_argument,
.val = 'm',
},
{
.name = "version",
.has_arg = no_argument,
.val = 'v',
},
{
.name = "help",
.has_arg = no_argument,
.val = 'h',
},
{
.name = "cmdhelp",
.has_arg = optional_argument,
.val = 'c',
},
{
.name = NULL,
},
};
FILE *get_f_out()
{
return f_out;
}
FILE *get_f_err()
{
return f_err;
}
/*
* Return a free job structure.
*/
static struct thread_data *get_new_job(int global, struct thread_data *parent)
{
struct thread_data *td;
if (global)
return &def_thread;
if (thread_number >= max_jobs)
return NULL;
td = &threads[thread_number++];
*td = *parent;
td->thread_number = thread_number;
return td;
}
static void put_job(struct thread_data *td)
{
if (td == &def_thread)
return;
if (td->error)
log_info("fio: %s\n", td->verror);
memset(&threads[td->thread_number - 1], 0, sizeof(*td));
thread_number--;
}
/*
* Lazy way of fixing up options that depend on each other. We could also
* define option callback handlers, but this is easier.
*/
static int fixup_options(struct thread_data *td)
{
if (!td->rwmixread && td->rwmixwrite)
td->rwmixread = 100 - td->rwmixwrite;
if (td->write_iolog_file && td->read_iolog_file) {
log_err("fio: read iolog overrides write_iolog\n");
free(td->write_iolog_file);
td->write_iolog_file = NULL;
}
if (td->io_ops->flags & FIO_SYNCIO)
td->iodepth = 1;
else {
if (!td->iodepth)
td->iodepth = td->open_files;
}
/*
* only really works for sequential io for now, and with 1 file
*/
if (td->zone_size && td_random(td) && td->open_files == 1)
td->zone_size = 0;
/*
* Reads can do overwrites, we always need to pre-create the file
*/
if (td_read(td) || td_rw(td))
td->overwrite = 1;
if (!td->min_bs[DDIR_READ])
td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
if (!td->max_bs[DDIR_READ])
td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
if (!td->min_bs[DDIR_WRITE])
td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
if (!td->max_bs[DDIR_WRITE])
td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
if (!td->file_size_high)
td->file_size_high = td->file_size_low;
if (td_read(td) && !td_rw(td))
td->verify = 0;
if (td->norandommap && td->verify != VERIFY_NONE) {
log_err("fio: norandommap given, verify disabled\n");
td->verify = VERIFY_NONE;
}
if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
log_err("fio: bs_unaligned may not work with raw io\n");
/*
* thinktime_spin must be less than thinktime
*/
if (td->thinktime_spin > td->thinktime)
td->thinktime_spin = td->thinktime;
/*
* The low water mark cannot be bigger than the iodepth
*/
if (td->iodepth_low > td->iodepth || !td->iodepth_low) {
/*
* syslet work around - if the workload is sequential,
* we want to let the queue drain all the way down to
* avoid seeking between async threads
*/
if (!strcmp(td->io_ops->name, "syslet-rw") && !td_random(td))
td->iodepth_low = 1;
else
td->iodepth_low = td->iodepth;
}
/*
* If batch number isn't set, default to the same as iodepth
*/
if (td->iodepth_batch > td->iodepth || !td->iodepth_batch)
td->iodepth_batch = td->iodepth;
if (td->nr_files > td->files_index)
td->nr_files = td->files_index;
if (td->open_files > td->nr_files || !td->open_files)
td->open_files = td->nr_files;
if ((td->rate && td->rate_iops) || (td->ratemin && td->rate_iops_min)) {
log_err("fio: rate and rate_iops are mutually exclusive\n");
return 1;
}
if ((td->rate < td->ratemin) || (td->rate_iops < td->rate_iops_min)) {
log_err("fio: minimum rate exceeds rate\n");
return 1;
}
return 0;
}
/*
* This function leaks the buffer
*/
static char *to_kmg(unsigned int val)
{
char *buf = malloc(32);
char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
char *p = post;
do {
if (val & 1023)
break;
val >>= 10;
p++;
} while (*p);
snprintf(buf, 31, "%u%c", val, *p);
return buf;
}
/* External engines are specified by "external:name.o") */
static const char *get_engine_name(const char *str)
{
char *p = strstr(str, ":");
if (!p)
return str;
p++;
strip_blank_front(&p);
strip_blank_end(p);
return p;
}
static int exists_and_not_file(const char *filename)
{
struct stat sb;
if (lstat(filename, &sb) == -1)
return 0;
if (S_ISREG(sb.st_mode))
return 0;
return 1;
}
/*
* Initialize the various random states we need (random io, block size ranges,
* read/write mix, etc).
*/
static int init_random_state(struct thread_data *td)
{
unsigned long seeds[6];
int fd, num_maps, blocks;
struct fio_file *f;
unsigned int i;
fd = open("/dev/urandom", O_RDONLY);
if (fd == -1) {
td_verror(td, errno, "open");
return 1;
}
if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
td_verror(td, EIO, "read");
close(fd);
return 1;
}
close(fd);
os_random_seed(seeds[0], &td->bsrange_state);
os_random_seed(seeds[1], &td->verify_state);
os_random_seed(seeds[2], &td->rwmix_state);
if (td->file_service_type == FIO_FSERVICE_RANDOM)
os_random_seed(seeds[3], &td->next_file_state);
os_random_seed(seeds[5], &td->file_size_state);
if (!td_random(td))
return 0;
if (td->rand_repeatable)
seeds[4] = FIO_RANDSEED * td->thread_number;
if (!td->norandommap) {
for_each_file(td, f, i) {
blocks = (f->real_file_size + td->rw_min_bs - 1) / td->rw_min_bs;
num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
f->file_map = malloc(num_maps * sizeof(long));
if (!f->file_map) {
log_err("fio: failed allocating random map. If running a large number of jobs, try the 'norandommap' option\n");
return 1;
}
f->num_maps = num_maps;
memset(f->file_map, 0, num_maps * sizeof(long));
}
}
os_random_seed(seeds[4], &td->random_state);
return 0;
}
/*
* Adds a job to the list of things todo. Sanitizes the various options
* to make sure we don't have conflicts, and initializes various
* members of td.
*/
static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
{
const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
"randread", "randwrite", "randrw" };
unsigned int i;
struct fio_file *f;
const char *engine;
char fname[PATH_MAX];
int numjobs, file_alloced;
/*
* the def_thread is just for options, it's not a real job
*/
if (td == &def_thread)
return 0;
engine = get_engine_name(td->ioengine);
td->io_ops = load_ioengine(td, engine);
if (!td->io_ops) {
log_err("fio: failed to load engine %s\n", engine);
goto err;
}
if (td->use_thread)
nr_thread++;
else
nr_process++;
if (td->odirect)
td->io_ops->flags |= FIO_RAWIO;
file_alloced = 0;
if (!td->filename && !td->files_index) {
file_alloced = 1;
if (td->nr_files == 1 && exists_and_not_file(jobname))
add_file(td, jobname);
else {
for (i = 0; i < td->nr_files; i++) {
sprintf(fname, "%s.%d.%d", jobname, td->thread_number, i);
add_file(td, fname);
}
}
}
if (fixup_options(td))
goto err;
for_each_file(td, f, i) {
if (td->directory && f->filetype == FIO_TYPE_FILE) {
sprintf(fname, "%s/%s", td->directory, f->file_name);
f->file_name = strdup(fname);
}
}
td->mutex = fio_sem_init(0);
td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
if ((td->stonewall || td->numjobs > 1) && prev_group_jobs) {
prev_group_jobs = 0;
groupid++;
}
td->groupid = groupid;
prev_group_jobs++;
if (init_random_state(td))
goto err;
if (setup_rate(td))
goto err;
if (td->write_lat_log) {
setup_log(&td->ts.slat_log);
setup_log(&td->ts.clat_log);
}
if (td->write_bw_log)
setup_log(&td->ts.bw_log);
if (!td->name)
td->name = strdup(jobname);
if (!terse_output) {
if (!job_add_num) {
if (!strcmp(td->io_ops->name, "cpuio"))
log_info("%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
else {
char *c1, *c2, *c3, *c4;
c1 = to_kmg(td->min_bs[DDIR_READ]);
c2 = to_kmg(td->max_bs[DDIR_READ]);
c3 = to_kmg(td->min_bs[DDIR_WRITE]);
c4 = to_kmg(td->max_bs[DDIR_WRITE]);
log_info("%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[td->td_ddir], c1, c2, c3, c4, td->io_ops->name, td->iodepth);
free(c1);
free(c2);
free(c3);
free(c4);
}
} else if (job_add_num == 1)
log_info("...\n");
}
/*
* recurse add identical jobs, clear numjobs and stonewall options
* as they don't apply to sub-jobs
*/
numjobs = td->numjobs;
while (--numjobs) {
struct thread_data *td_new = get_new_job(0, td);
if (!td_new)
goto err;
td_new->numjobs = 1;
td_new->stonewall = 0;
if (file_alloced) {
td_new->filename = NULL;
td_new->files_index = 0;
td_new->files = NULL;
}
job_add_num = numjobs - 1;
if (add_job(td_new, jobname, job_add_num))
goto err;
}
if (td->numjobs > 1) {
groupid++;
prev_group_jobs = 0;
}
return 0;
err:
put_job(td);
return -1;
}
static int is_empty_or_comment(char *line)
{
unsigned int i;
for (i = 0; i < strlen(line); i++) {
if (line[i] == ';')
return 1;
if (line[i] == '#')
return 1;
if (!isspace(line[i]) && !iscntrl(line[i]))
return 0;
}
return 1;
}
/*
* This is our [ini] type file parser.
*/
static int parse_jobs_ini(char *file, int stonewall_flag)
{
unsigned int global;
struct thread_data *td;
char *string, *name;
fpos_t off;
FILE *f;
char *p;
int ret = 0, stonewall;
f = fopen(file, "r");
if (!f) {
perror("fopen job file");
return 1;
}
string = malloc(4096);
name = malloc(256);
memset(name, 0, 256);
stonewall = stonewall_flag;
do {
p = fgets(string, 4095, f);
if (!p)
break;
if (is_empty_or_comment(p))
continue;
if (sscanf(p, "[%255s]", name) != 1)
continue;
global = !strncmp(name, "global", 6);
name[strlen(name) - 1] = '\0';
td = get_new_job(global, &def_thread);
if (!td) {
ret = 1;
break;
}
/*
* Seperate multiple job files by a stonewall
*/
if (!global && stonewall) {
td->stonewall = stonewall;
stonewall = 0;
}
fgetpos(f, &off);
while ((p = fgets(string, 4096, f)) != NULL) {
if (is_empty_or_comment(p))
continue;
strip_blank_front(&p);
if (p[0] == '[')
break;
strip_blank_end(p);
fgetpos(f, &off);
/*
* Don't break here, continue parsing options so we
* dump all the bad ones. Makes trial/error fixups
* easier on the user.
*/
ret |= fio_option_parse(td, p);
}
if (!ret) {
fsetpos(f, &off);
ret = add_job(td, name, 0);
} else {
log_err("fio: job %s dropped\n", name);
put_job(td);
}
} while (!ret);
free(string);
free(name);
fclose(f);
return ret;
}
static int fill_def_thread(void)
{
memset(&def_thread, 0, sizeof(def_thread));
if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
perror("sched_getaffinity");
return 1;
}
/*
* fill default options
*/
fio_fill_default_options(&def_thread);
def_thread.timeout = def_timeout;
def_thread.write_bw_log = write_bw_log;
def_thread.write_lat_log = write_lat_log;
#ifdef FIO_HAVE_DISK_UTIL
def_thread.do_disk_util = 1;
#endif
return 0;
}
static void free_shm(void)
{
struct shmid_ds sbuf;
if (threads) {
shmdt((void *) threads);
threads = NULL;
shmctl(shm_id, IPC_RMID, &sbuf);
}
}
/*
* The thread area is shared between the main process and the job
* threads/processes. So setup a shared memory segment that will hold
* all the job info.
*/
static int setup_thread_area(void)
{
/*
* 1024 is too much on some machines, scale max_jobs if
* we get a failure that looks like too large a shm segment
*/
do {
size_t size = max_jobs * sizeof(struct thread_data);
shm_id = shmget(0, size, IPC_CREAT | 0600);
if (shm_id != -1)
break;
if (errno != EINVAL) {
perror("shmget");
break;
}
max_jobs >>= 1;
} while (max_jobs);
if (shm_id == -1)
return 1;
threads = shmat(shm_id, NULL, 0);
if (threads == (void *) -1) {
perror("shmat");
return 1;
}
atexit(free_shm);
return 0;
}
static void usage(void)
{
printf("%s\n", fio_version_string);
printf("\t--output\tWrite output to file\n");
printf("\t--timeout\tRuntime in seconds\n");
printf("\t--latency-log\tGenerate per-job latency logs\n");
printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
printf("\t--minimal\tMinimal (terse) output\n");
printf("\t--version\tPrint version info and exit\n");
printf("\t--help\t\tPrint this page\n");
printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
}
static int parse_cmd_line(int argc, char *argv[])
{
struct thread_data *td = NULL;
int c, ini_idx = 0, lidx, ret, dont_add_job = 0;
while ((c = getopt_long_only(argc, argv, "", long_options, &lidx)) != -1) {
switch (c) {
case 't':
def_timeout = atoi(optarg);
break;
case 'l':
write_lat_log = 1;
break;
case 'w':
write_bw_log = 1;
break;
case 'o':
f_out = fopen(optarg, "w+");
if (!f_out) {
perror("fopen output");
exit(1);
}
f_err = f_out;
break;
case 'm':
terse_output = 1;
break;
case 'h':
usage();
exit(0);
case 'c':
exit(fio_show_option_help(optarg));
case 'v':
printf("%s\n", fio_version_string);
exit(0);
case FIO_GETOPT_JOB: {
const char *opt = long_options[lidx].name;
char *val = optarg;
if (!strncmp(opt, "name", 4) && td) {
ret = add_job(td, td->name ?: "fio", 0);
if (ret) {
put_job(td);
return 0;
}
td = NULL;
}
if (!td) {
int global = !strncmp(val, "global", 6);
td = get_new_job(global, &def_thread);
if (!td)
return 0;
}
ret = fio_cmd_option_parse(td, opt, val);
if (ret)
dont_add_job = 1;
break;
}
default:
break;
}
}
if (td) {
if (dont_add_job)
put_job(td);
else {
ret = add_job(td, td->name ?: "fio", 0);
if (ret)
put_job(td);
}
}
while (optind < argc) {
ini_idx++;
ini_file = realloc(ini_file, ini_idx * sizeof(char *));
ini_file[ini_idx - 1] = strdup(argv[optind]);
optind++;
}
return ini_idx;
}
int parse_options(int argc, char *argv[])
{
int job_files, i;
f_out = stdout;
f_err = stderr;
fio_options_dup_and_init(long_options);
if (setup_thread_area())
return 1;
if (fill_def_thread())
return 1;
job_files = parse_cmd_line(argc, argv);
for (i = 0; i < job_files; i++) {
if (fill_def_thread())
return 1;
if (parse_jobs_ini(ini_file[i], i))
return 1;
free(ini_file[i]);
}
free(ini_file);
if (!thread_number) {
log_err("No jobs defined(s)\n");
return 1;
}
return 0;
}