blob: 4fe1dce8b9b8a306ff30e8afcdf9f88a6ec06474 [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 <assert.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "fio.h"
#include "parse.h"
#define FIO_RANDSEED (0xb1899bedUL)
#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
static int str_rw_cb(void *, const char *);
static int str_ioengine_cb(void *, const char *);
static int str_mem_cb(void *, const char *);
static int str_verify_cb(void *, const char *);
static int str_lockmem_cb(void *, unsigned long *);
#ifdef FIO_HAVE_IOPRIO
static int str_prio_cb(void *, unsigned int *);
static int str_prioclass_cb(void *, unsigned int *);
#endif
static int str_exitall_cb(void);
static int str_cpumask_cb(void *, unsigned int *);
#define __stringify_1(x) #x
#define __stringify(x) __stringify_1(x)
/*
* Map of job/command line options
*/
static struct fio_option options[] = {
{
.name = "description",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(description),
.help = "Text job description",
},
{
.name = "name",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(name),
.help = "Name of this job",
},
{
.name = "directory",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(directory),
.help = "Directory to store files in",
},
{
.name = "filename",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(filename),
.help = "Force the use of a specific file",
},
{
.name = "rw",
.type = FIO_OPT_STR,
.cb = str_rw_cb,
.help = "IO direction",
.def = "read",
.posval = { "read", "write", "randwrite", "randread", "rw",
"randrw", },
},
{
.name = "ioengine",
.type = FIO_OPT_STR,
.cb = str_ioengine_cb,
.help = "IO engine to use",
.def = "sync",
.posval = { "sync", "libaio", "posixaio", "mmap", "splice",
"sg", "null", "net", },
},
{
.name = "iodepth",
.type = FIO_OPT_INT,
.off1 = td_var_offset(iodepth),
.help = "Amount of IO buffers to keep in flight",
.def = "1",
},
{
.name = "size",
.type = FIO_OPT_STR_VAL,
.off1 = td_var_offset(total_file_size),
.help = "Size of device or file",
},
{
.name = "bs",
.type = FIO_OPT_STR_VAL_INT,
.off1 = td_var_offset(bs[DDIR_READ]),
.off2 = td_var_offset(bs[DDIR_WRITE]),
.help = "Block size unit",
.def = "4k",
},
{
.name = "bsrange",
.type = FIO_OPT_RANGE,
.off1 = td_var_offset(min_bs[DDIR_READ]),
.off2 = td_var_offset(max_bs[DDIR_READ]),
.off3 = td_var_offset(min_bs[DDIR_WRITE]),
.off4 = td_var_offset(max_bs[DDIR_WRITE]),
.help = "Set block size range (in more detail than bs)",
},
{
.name = "bs_unaligned",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(bs_unaligned),
.help = "Don't sector align IO buffer sizes",
},
{
.name = "offset",
.type = FIO_OPT_STR_VAL,
.off1 = td_var_offset(start_offset),
.help = "Start IO from this offset",
.def = "0",
},
{
.name = "randrepeat",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(rand_repeatable),
.help = "Use repeatable random IO pattern",
.def = "1",
},
{
.name = "norandommap",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(norandommap),
.help = "Accept potential duplicate random blocks",
},
{
.name = "nrfiles",
.type = FIO_OPT_INT,
.off1 = td_var_offset(nr_files),
.help = "Split job workload between this number of files",
.def = "1",
},
{
.name = "fsync",
.type = FIO_OPT_INT,
.off1 = td_var_offset(fsync_blocks),
.help = "Issue fsync for writes every given number of blocks",
.def = "0",
},
{
.name = "direct",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(odirect),
.help = "Use O_DIRECT IO (negates buffered)",
.def = "0",
},
{
.name = "buffered",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(odirect),
.neg = 1,
.help = "Use buffered IO (negates direct)",
.def = "1",
},
{
.name = "overwrite",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(overwrite),
.help = "When writing, set whether to overwrite current data",
.def = "0",
},
{
.name = "loops",
.type = FIO_OPT_INT,
.off1 = td_var_offset(loops),
.help = "Number of times to run the job",
.def = "1",
},
{
.name = "numjobs",
.type = FIO_OPT_INT,
.off1 = td_var_offset(numjobs),
.help = "Duplicate this job this many times",
.def = "1",
},
{
.name = "startdelay",
.type = FIO_OPT_INT,
.off1 = td_var_offset(start_delay),
.help = "Only start job when this period has passed",
.def = "0",
},
{
.name = "runtime",
.alias = "timeout",
.type = FIO_OPT_STR_VAL_TIME,
.off1 = td_var_offset(timeout),
.help = "Stop workload when this amount of time has passed",
.def = "0",
},
{
.name = "mem",
.type = FIO_OPT_STR,
.cb = str_mem_cb,
.help = "Backing type for IO buffers",
.def = "malloc",
.posval = { "malloc", "shm", "shmhuge", "mmap", "mmaphuge", },
},
{
.name = "verify",
.type = FIO_OPT_STR,
.cb = str_verify_cb,
.help = "Verify sum function",
.def = "0",
.posval = { "crc32", "md5", },
},
{
.name = "write_iolog",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(write_iolog_file),
.help = "Store IO pattern to file",
},
{
.name = "read_iolog",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(read_iolog_file),
.help = "Playback IO pattern from file",
},
{
.name = "exec_prerun",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(exec_prerun),
.help = "Execute this file prior to running job",
},
{
.name = "exec_postrun",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(exec_postrun),
.help = "Execute this file after running job",
},
#ifdef FIO_HAVE_IOSCHED_SWITCH
{
.name = "ioscheduler",
.type = FIO_OPT_STR_STORE,
.off1 = td_var_offset(ioscheduler),
.help = "Use this IO scheduler on the backing device",
},
#endif
{
.name = "zonesize",
.type = FIO_OPT_STR_VAL,
.off1 = td_var_offset(zone_size),
.help = "Give size of an IO zone",
.def = "0",
},
{
.name = "zoneskip",
.type = FIO_OPT_STR_VAL,
.off1 = td_var_offset(zone_skip),
.help = "Space between IO zones",
.def = "0",
},
{
.name = "lockmem",
.type = FIO_OPT_STR_VAL,
.cb = str_lockmem_cb,
.help = "Lock down this amount of memory",
.def = "0",
},
{
.name = "rwmixcycle",
.type = FIO_OPT_INT,
.off1 = td_var_offset(rwmixcycle),
.help = "Cycle period for mixed read/write workloads (msec)",
.def = "500",
},
{
.name = "rwmixread",
.type = FIO_OPT_INT,
.off1 = td_var_offset(rwmixread),
.maxval = 100,
.help = "Percentage of mixed workload that is reads",
.def = "50",
},
{
.name = "rwmixwrite",
.type = FIO_OPT_INT,
.off1 = td_var_offset(rwmixwrite),
.maxval = 100,
.help = "Percentage of mixed workload that is writes",
.def = "50",
},
{
.name = "nice",
.type = FIO_OPT_INT,
.off1 = td_var_offset(nice),
.help = "Set job CPU nice value",
.minval = -19,
.maxval = 20,
.def = "0",
},
#ifdef FIO_HAVE_IOPRIO
{
.name = "prio",
.type = FIO_OPT_INT,
.cb = str_prio_cb,
.help = "Set job IO priority value",
.minval = 0,
.maxval = 7,
},
{
.name = "prioclass",
.type = FIO_OPT_INT,
.cb = str_prioclass_cb,
.help = "Set job IO priority class",
.minval = 0,
.maxval = 3,
},
#endif
{
.name = "thinktime",
.type = FIO_OPT_INT,
.off1 = td_var_offset(thinktime),
.help = "Idle time between IO buffers (usec)",
.def = "0",
},
{
.name = "thinktime_blocks",
.type = FIO_OPT_INT,
.off1 = td_var_offset(thinktime_blocks),
.help = "IO buffer period between 'thinktime'",
.def = "1",
},
{
.name = "rate",
.type = FIO_OPT_INT,
.off1 = td_var_offset(rate),
.help = "Set bandwidth rate",
},
{
.name = "ratemin",
.type = FIO_OPT_INT,
.off1 = td_var_offset(ratemin),
.help = "The bottom limit accepted",
},
{
.name = "ratecycle",
.type = FIO_OPT_INT,
.off1 = td_var_offset(ratecycle),
.help = "Window average for rate limits (msec)",
.def = "1000",
},
{
.name = "invalidate",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(invalidate_cache),
.help = "Invalidate buffer/page cache prior to running job",
.def = "1",
},
{
.name = "sync",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(sync_io),
.help = "Use O_SYNC for buffered writes",
.def = "0",
},
{
.name = "bwavgtime",
.type = FIO_OPT_INT,
.off1 = td_var_offset(bw_avg_time),
.help = "Time window over which to calculate bandwidth (msec)",
.def = "500",
},
{
.name = "create_serialize",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(create_serialize),
.help = "Serialize creating of job files",
.def = "1",
},
{
.name = "create_fsync",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(create_fsync),
.help = "Fsync file after creation",
.def = "1",
},
{
.name = "cpuload",
.type = FIO_OPT_INT,
.off1 = td_var_offset(cpuload),
.help = "Use this percentage of CPU",
},
{
.name = "cpuchunks",
.type = FIO_OPT_INT,
.off1 = td_var_offset(cpucycle),
.help = "Length of the CPU burn cycles",
},
#ifdef FIO_HAVE_CPU_AFFINITY
{
.name = "cpumask",
.type = FIO_OPT_INT,
.cb = str_cpumask_cb,
.help = "CPU affinity mask",
},
#endif
{
.name = "end_fsync",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(end_fsync),
.help = "Include fsync at the end of job",
.def = "0",
},
{
.name = "unlink",
.type = FIO_OPT_BOOL,
.off1 = td_var_offset(unlink),
.help = "Unlink created files after job has completed",
.def = "0",
},
{
.name = "exitall",
.type = FIO_OPT_STR_SET,
.cb = str_exitall_cb,
.help = "Terminate all jobs when one exits",
},
{
.name = "stonewall",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(stonewall),
.help = "Insert a hard barrier between this job and previous",
},
{
.name = "thread",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(use_thread),
.help = "Use threads instead of forks",
},
{
.name = "write_bw_log",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(write_bw_log),
.help = "Write log of bandwidth during run",
},
{
.name = "write_lat_log",
.type = FIO_OPT_STR_SET,
.off1 = td_var_offset(write_lat_log),
.help = "Write log of latency during run",
},
{
.name = "hugepage-size",
.type = FIO_OPT_STR_VAL,
.off1 = td_var_offset(hugepage_size),
.help = "When using hugepages, specify size of each page",
.def = __stringify(FIO_HUGE_PAGE),
},
{
.name = NULL,
},
};
#define FIO_JOB_OPTS (sizeof(options) / sizeof(struct fio_option))
#define FIO_CMD_OPTS (16)
#define FIO_GETOPT_JOB (0x89988998)
/*
* 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_JOB_OPTS + FIO_CMD_OPTS] = {
{
.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 = required_argument,
.val = 'c',
},
{
.name = NULL,
},
};
static int def_timeout = 0;
static char fio_version_string[] = "fio 1.11";
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;
static int write_lat_log = 0;
int write_bw_log = 0;
/*
* 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)
fprintf(f_out, "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 void 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->nr_files;
}
/*
* only really works for sequential io for now, and with 1 file
*/
if (td->zone_size && !td->sequential && td->nr_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_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");
/*
* O_DIRECT and char doesn't mix, clear that flag if necessary.
*/
if (td->filetype == FIO_TYPE_CHAR && td->odirect)
td->odirect = 0;
}
/*
* This function leaks the buffer
*/
static char *to_kmg(unsigned int val)
{
char *buf = malloc(32);
char post[] = { 0, 'K', 'M', 'G', 'P', 0 };
char *p = post;
do {
if (val & 1023)
break;
val >>= 10;
p++;
} while (*p);
snprintf(buf, 31, "%u%c", val, *p);
return buf;
}
/*
* 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[] = { "read", "write", "randread", "randwrite",
"rw", NULL, "randrw" };
struct stat sb;
int numjobs, ddir, i;
struct fio_file *f;
/*
* the def_thread is just for options, it's not a real job
*/
if (td == &def_thread)
return 0;
assert(td->io_ops);
if (td->odirect)
td->io_ops->flags |= FIO_RAWIO;
td->filetype = FIO_TYPE_FILE;
if (!stat(jobname, &sb)) {
if (S_ISBLK(sb.st_mode))
td->filetype = FIO_TYPE_BD;
else if (S_ISCHR(sb.st_mode))
td->filetype = FIO_TYPE_CHAR;
}
fixup_options(td);
if (td->filename)
td->nr_uniq_files = 1;
else
td->nr_uniq_files = td->nr_files;
if (td->filetype == FIO_TYPE_FILE || td->filename) {
char tmp[PATH_MAX];
int len = 0;
if (td->directory && td->directory[0] != '\0') {
if (lstat(td->directory, &sb) < 0) {
log_err("fio: %s is not a directory\n", td->directory);
td_verror(td, errno);
return 1;
}
if (!S_ISDIR(sb.st_mode)) {
log_err("fio: %s is not a directory\n", td->directory);
return 1;
}
len = sprintf(tmp, "%s/", td->directory);
}
td->files = malloc(sizeof(struct fio_file) * td->nr_files);
for_each_file(td, f, i) {
memset(f, 0, sizeof(*f));
f->fd = -1;
if (td->filename)
sprintf(tmp + len, "%s", td->filename);
else
sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
f->file_name = strdup(tmp);
}
} else {
td->nr_files = 1;
td->files = malloc(sizeof(struct fio_file));
f = &td->files[0];
memset(f, 0, sizeof(*f));
f->fd = -1;
f->file_name = strdup(jobname);
}
for_each_file(td, f, i) {
f->file_size = td->total_file_size / td->nr_files;
f->file_offset = td->start_offset;
}
fio_sem_init(&td->mutex, 0);
td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
if (td->stonewall && td->thread_number > 1)
groupid++;
td->groupid = groupid;
if (setup_rate(td))
goto err;
if (td->write_lat_log) {
setup_log(&td->slat_log);
setup_log(&td->clat_log);
}
if (td->write_bw_log)
setup_log(&td->bw_log);
if (!td->name)
td->name = strdup(jobname);
ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
if (!terse_output) {
if (!job_add_num) {
if (td->io_ops->flags & FIO_CPUIO)
fprintf(f_out, "%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]);
fprintf(f_out, "%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[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)
fprintf(f_out, "...\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;
job_add_num = numjobs - 1;
if (add_job(td_new, jobname, job_add_num))
goto err;
}
return 0;
err:
put_job(td);
return -1;
}
/*
* Initialize the various random states we need (random io, block size ranges,
* read/write mix, etc).
*/
int init_random_state(struct thread_data *td)
{
unsigned long seeds[4];
int fd, num_maps, blocks, i;
struct fio_file *f;
if (td->io_ops->flags & FIO_CPUIO)
return 0;
fd = open("/dev/urandom", O_RDONLY);
if (fd == -1) {
td_verror(td, errno);
return 1;
}
if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
td_verror(td, EIO);
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->sequential)
return 0;
if (td->rand_repeatable)
seeds[3] = FIO_RANDSEED;
if (!td->norandommap) {
for_each_file(td, f, i) {
blocks = (f->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));
f->num_maps = num_maps;
memset(f->file_map, 0, num_maps * sizeof(long));
}
}
os_random_seed(seeds[3], &td->random_state);
return 0;
}
static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
{
#ifdef FIO_HAVE_CPU_AFFINITY
unsigned int i;
CPU_ZERO(&cpumask);
for (i = 0; i < sizeof(int) * 8; i++) {
if ((1 << i) & cpu)
CPU_SET(i, &cpumask);
}
#endif
}
static int is_empty_or_comment(char *line)
{
unsigned int i;
for (i = 0; i < strlen(line); i++) {
if (line[i] == ';')
return 1;
if (!isspace(line[i]) && !iscntrl(line[i]))
return 0;
}
return 1;
}
static int str_rw_cb(void *data, const char *mem)
{
struct thread_data *td = data;
if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
td->ddir = DDIR_READ;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randread", 8)) {
td->ddir = DDIR_READ;
td->sequential = 0;
return 0;
} else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
td->ddir = DDIR_WRITE;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randwrite", 9)) {
td->ddir = DDIR_WRITE;
td->sequential = 0;
return 0;
} else if (!strncmp(mem, "rw", 2)) {
td->ddir = DDIR_READ;
td->iomix = 1;
td->sequential = 1;
return 0;
} else if (!strncmp(mem, "randrw", 6)) {
td->ddir = DDIR_READ;
td->iomix = 1;
td->sequential = 0;
return 0;
}
log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
return 1;
}
static int str_verify_cb(void *data, const char *mem)
{
struct thread_data *td = data;
if (!strncmp(mem, "0", 1)) {
td->verify = VERIFY_NONE;
return 0;
} else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
td->verify = VERIFY_MD5;
return 0;
} else if (!strncmp(mem, "crc32", 5)) {
td->verify = VERIFY_CRC32;
return 0;
}
log_err("fio: verify types: md5, crc32\n");
return 1;
}
/*
* Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
*/
static char *get_mmap_file(const char *str)
{
char *p = strstr(str, ":");
if (!p)
return NULL;
p++;
strip_blank_front(&p);
strip_blank_end(p);
return strdup(p);
}
static int str_mem_cb(void *data, const char *mem)
{
struct thread_data *td = data;
if (!strncmp(mem, "malloc", 6)) {
td->mem_type = MEM_MALLOC;
return 0;
} else if (!strncmp(mem, "mmaphuge", 8)) {
#ifdef FIO_HAVE_HUGETLB
/*
* mmaphuge must be appended with the actual file
*/
td->mmapfile = get_mmap_file(mem);
if (!td->mmapfile) {
log_err("fio: mmaphuge:/path/to/file\n");
return 1;
}
td->mem_type = MEM_MMAPHUGE;
return 0;
#else
log_err("fio: mmaphuge not available\n");
return 1;
#endif
} else if (!strncmp(mem, "mmap", 4)) {
/*
* Check if the user wants file backed memory. It's ok
* if there's no file given, we'll just use anon mamp then.
*/
td->mmapfile = get_mmap_file(mem);
td->mem_type = MEM_MMAP;
return 0;
} else if (!strncmp(mem, "shmhuge", 7)) {
#ifdef FIO_HAVE_HUGETLB
td->mem_type = MEM_SHMHUGE;
return 0;
#else
log_err("fio: shmhuge not available\n");
return 1;
#endif
} else if (!strncmp(mem, "shm", 3)) {
td->mem_type = MEM_SHM;
return 0;
}
log_err("fio: mem type: malloc, shm, shmhuge, mmap, mmaphuge\n");
return 1;
}
static int str_ioengine_cb(void *data, const char *str)
{
struct thread_data *td = data;
td->io_ops = load_ioengine(td, str);
if (td->io_ops)
return 0;
log_err("fio: ioengine= libaio, posixaio, sync, mmap, sgio, splice, cpu, null\n");
log_err("fio: or specify path to dynamic ioengine module\n");
return 1;
}
static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
{
mlock_size = *val;
return 0;
}
#ifdef FIO_HAVE_IOPRIO
static int str_prioclass_cb(void *data, unsigned int *val)
{
struct thread_data *td = data;
td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
return 0;
}
static int str_prio_cb(void *data, unsigned int *val)
{
struct thread_data *td = data;
td->ioprio |= *val;
return 0;
}
#endif
static int str_exitall_cb(void)
{
exitall_on_terminate = 1;
return 0;
}
static int str_cpumask_cb(void *data, unsigned int *val)
{
struct thread_data *td = data;
fill_cpu_mask(td->cpumask, *val);
return 0;
}
/*
* 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 |= parse_option(p, options, td);
}
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
*/
fill_default_options(&def_thread, options);
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 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;
while ((c = getopt_long(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':
ret = show_cmd_help(options, optarg);
exit(ret);
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 = parse_cmd_option(opt, val, options, td);
if (ret) {
log_err("fio: job dropped\n");
put_job(td);
td = NULL;
}
break;
}
default:
break;
}
}
if (td) {
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;
}
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;
}
/*
* Copy the fio options into the long options map, so we mirror
* job and cmd line options.
*/
static void dupe_job_options(void)
{
struct fio_option *o;
unsigned int i;
i = 0;
while (long_options[i].name)
i++;
o = &options[0];
while (o->name) {
long_options[i].name = o->name;
long_options[i].val = FIO_GETOPT_JOB;
if (o->type == FIO_OPT_STR_SET)
long_options[i].has_arg = no_argument;
else
long_options[i].has_arg = required_argument;
i++;
o++;
assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
}
}
int parse_options(int argc, char *argv[])
{
int job_files, i;
f_out = stdout;
f_err = stderr;
options_init(options);
dupe_job_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;
}