/* Build fs according to type */
int ldiskfs_make_lustre(struct mkfs_opts *mop)
{
char mkfs_cmd[PATH_MAX];
char buf[64];
char *start;
char *dev;
int ret = 0, ext_opts = 0;
bool enable_64bit = false;
long inode_size = 0;
size_t maxbuflen;
mop->mo_blocksize_kb = 4;
start = strstr(mop->mo_mkfsopts, "-b");
if (start) {
char *end = NULL;
long blocksize;
blocksize = strtol(start + 2, &end, 0);
if (end && (*end == 'k' || *end == 'K'))
blocksize *= 1024;
/* EXT4_MIN_BLOCK_SIZE || EXT4_MAX_BLOCK_SIZE */
if (blocksize < 1024 || blocksize > 65536) {
fprintf(stderr,
"%s: blocksize %lu not in 1024-65536 bytes, normally 4096 bytes\n",
progname, blocksize);
return EINVAL;
}
if ((blocksize & (blocksize - 1)) != 0) {
fprintf(stderr,
"%s: blocksize %lu not a power-of-two value\n",
progname, blocksize);
return EINVAL;
}
mop->mo_blocksize_kb = blocksize >> 10;
}
if (!(mop->mo_flags & MO_IS_LOOP)) {
__u64 device_kb = get_device_size(mop->mo_device);
if (device_kb == 0)
return ENODEV;
/* Compare to real size */
if (mop->mo_device_kb == 0 || device_kb < mop->mo_device_kb)
mop->mo_device_kb = device_kb;
}
if (mop->mo_device_kb != 0) {
__u64 block_count;
if (mop->mo_device_kb < 32384) {
fprintf(stderr, "%s: size of filesystem must be larger "
"than 32MB, but is set to %lldKB\n",
progname, (long long)mop->mo_device_kb);
return EINVAL;
}
block_count = mop->mo_device_kb / mop->mo_blocksize_kb;
if (block_count > 0xffffffffULL) {
/* If the LUN size is just over 2^32 blocks, limit the
* filesystem size to 2^32-1 blocks to avoid problems
* with ldiskfs/mkfs not handling this well. b=22906
*/
if (block_count < 0x100002000ULL)
mop->mo_device_kb =
0xffffffffULL * mop->mo_blocksize_kb;
else
enable_64bit = true;
}
}
if ((mop->mo_ldd.ldd_mount_type != LDD_MT_EXT3) &&
(mop->mo_ldd.ldd_mount_type != LDD_MT_LDISKFS) &&
(mop->mo_ldd.ldd_mount_type != LDD_MT_LDISKFS2)) {
fprintf(stderr, "%s: unsupported fs type: %d (%s)\n",
progname, mop->mo_ldd.ldd_mount_type,
MT_STR(&mop->mo_ldd));
return EINVAL;
}
/* Journal size in MB */
if (strstr(mop->mo_mkfsopts, "-J") == NULL &&
mop->mo_device_kb > 1024 * 1024) {
/* Choose our own default journal size */
long journal_mb = 0, max_mb;
/* cap journal size at 4GB for MDT, leave at 1GB for OSTs */
if (IS_MDT(&mop->mo_ldd))
max_mb = 4096;
else if (IS_OST(&mop->mo_ldd))
max_mb = 1024;
else /* Use mke2fs default size for MGS */
max_mb = 0;
/* Use at most 4% of device for journal */
journal_mb = mop->mo_device_kb * 4 / (1024 * 100);
if (journal_mb > max_mb)
journal_mb = max_mb;
if (journal_mb) {
snprintf(buf, sizeof(buf), " -J size=%ld", journal_mb);
strscat(mop->mo_mkfsopts, buf,
sizeof(mop->mo_mkfsopts));
}
}
/*
* The inode size is constituted by following elements
* (assuming all files are in composite layout and has
* 3 components):
*
* ldiskfs inode size: 160
* MDT extended attributes size, including:
* ext4_xattr_header: 32
* LOV EA size: 32(lov_comp_md_v1) +
* 3 * 40(lov_comp_md_entry_v1) +
* 3 * 32(lov_mds_md) +
* stripes * 24(lov_ost_data) +
* 16(xattr_entry) + 4("lov")
* LMA EA size: 24(lustre_mdt_attrs) +
* 16(xattr_entry) + 4("lma")
* SOM EA size: 24(lustre_som_attrs) +
* 16(xattr_entry) + 4("som")
* link EA size: 24(link_ea_header) + 18(link_ea_entry) +
* 16(filename) + 16(xattr_entry) + 4("link")
* and some margin for 4-byte alignment, ACLs and other EAs.
*
* If we say the average filename length is about 32 bytes,
* the calculation looks like:
* 160 + 32 + (32+3*(40+32)+24*stripes+20) + (24+20) + (24+20) +
* (24+20) + (~42+16+20) + other <= 512*2^m, {m=0,1,2,3}
*/
if (strstr(mop->mo_mkfsopts, "-I") == NULL) {
if (IS_MDT(&mop->mo_ldd)) {
if (mop->mo_stripe_count > 59)
inode_size = 512; /* bz 7241 */
/* see also "-i" below for EA blocks */
else if (mop->mo_stripe_count > 16)
inode_size = 2048;
else
inode_size = 1024;
} else if (IS_OST(&mop->mo_ldd)) {
/* We store MDS FID and necessary composite
* layout information in the OST object EA:
* ldiskfs inode size: 160
* OST extended attributes size, including:
* ext4_xattr_header: 32
* LMA EA size: 24(lustre_mdt_attrs) +
* 16(xattr_entry) + 4("lma")
* FID EA size: 52(filter_fid) +
* 16(xattr_entry) + 4("fid")
* 160 + 32 + (24+20) + (52+20) = 308
*/
inode_size = 512;
}
if (inode_size > 0) {
snprintf(buf, sizeof(buf), " -I %ld", inode_size);
strscat(mop->mo_mkfsopts, buf,
sizeof(mop->mo_mkfsopts));
}
}
/* Bytes_per_inode: disk size / num inodes */
if (strstr(mop->mo_mkfsopts, "-i") == NULL &&
strstr(mop->mo_mkfsopts, "-N") == NULL) {
long bytes_per_inode = 0;
/* Allocate more inodes on MDT devices. There is
* no data stored on the MDT, and very little extra
* metadata beyond the inode. It could go down as
* low as 1024 bytes, but this is conservative.
* Account for external EA blocks for wide striping.
*/
if (IS_MDT(&mop->mo_ldd)) {
bytes_per_inode = inode_size + 1536;
if (mop->mo_stripe_count > 59) {
int extra = mop->mo_stripe_count * 24;
extra = ((extra - 1) | 4095) + 1;
bytes_per_inode += extra;
}
}
/* Allocate fewer inodes on large OST devices. Most
* filesystems can be much more aggressive than even
* this, but it is impossible to know in advance.
*/
if (IS_OST(&mop->mo_ldd)) {
/* OST > 16TB assume average file size 1MB */
if (mop->mo_device_kb > (16ULL << 30))
bytes_per_inode = 1024 * 1024;
/* OST > 4TB assume average file size 512kB */
else if (mop->mo_device_kb > (4ULL << 30))
bytes_per_inode = 512 * 1024;
/* OST > 1TB assume average file size 256kB */
else if (mop->mo_device_kb > (1ULL << 30))
bytes_per_inode = 256 * 1024;
/* OST > 10GB assume average file size 64kB,
* plus a bit so that inodes will fit into a
* 256x flex_bg without overflowing.
*/
else if (mop->mo_device_kb > (10ULL << 20))
bytes_per_inode = 69905;
}
if (bytes_per_inode > 0) {
snprintf(buf, sizeof(buf), " -i %ld", bytes_per_inode);
strscat(mop->mo_mkfsopts, buf,
sizeof(mop->mo_mkfsopts));
mop->mo_inode_size = bytes_per_inode;
}
}
if (verbose < 2)
strscat(mop->mo_mkfsopts, " -q", sizeof(mop->mo_mkfsopts));
/* start handle -O mkfs options */
start = strstr(mop->mo_mkfsopts, "-O");
if (start) {
if (strstr(start + 2, "-O") != NULL) {
fprintf(stderr,
"%s: don't specify multiple -O options\n",
progname);
return EINVAL;
}
start = moveopts_to_end(start);
maxbuflen = sizeof(mop->mo_mkfsopts) -
(start - mop->mo_mkfsopts) - strlen(start);
ret = enable_default_ext4_features(mop, start, maxbuflen, 1);
} else {
start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts);
maxbuflen = sizeof(mop->mo_mkfsopts) - strlen(mop->mo_mkfsopts);
ret = enable_default_ext4_features(mop, start, maxbuflen, 0);
}
if (ret)
return ret;
/* end handle -O mkfs options */
/* start handle -E mkfs options */
start = strstr(mop->mo_mkfsopts, "-E");
if (start) {
if (strstr(start + 2, "-E") != NULL) {
fprintf(stderr,
"%s: don't specify multiple -E options\n",
progname);
return EINVAL;
}
start = moveopts_to_end(start);
maxbuflen = sizeof(mop->mo_mkfsopts) -
(start - mop->mo_mkfsopts) - strlen(start);
ext_opts = 1;
} else {
start = mop->mo_mkfsopts + strlen(mop->mo_mkfsopts);
maxbuflen = sizeof(mop->mo_mkfsopts) - strlen(mop->mo_mkfsopts);
}
/* In order to align the filesystem metadata on 1MB boundaries,
* give a resize value that will reserve a power-of-two group
* descriptor blocks, but leave one block for the superblock.
* Only useful for filesystems with < 2^32 blocks due to resize
* limitations.
*/
if (!enable_64bit && strstr(mop->mo_mkfsopts, "meta_bg") == NULL &&
IS_OST(&mop->mo_ldd) && mop->mo_device_kb > 100 * 1024) {
unsigned int group_blocks = mop->mo_blocksize_kb * 8192;
unsigned int desc_per_block = mop->mo_blocksize_kb * 1024 / 32;
unsigned int resize_blks;
resize_blks = (1ULL<<32) - desc_per_block*group_blocks;
snprintf(buf, sizeof(buf), "%u", resize_blks);
append_unique(start, ext_opts ? "," : " -E ",
"resize", buf, maxbuflen);
ext_opts = 1;
}
/* Avoid zeroing out the full journal - speeds up mkfs */
if (is_e2fsprogs_feature_supp("-E lazy_journal_init"))
append_unique(start, ext_opts ? "," : " -E ",
"lazy_journal_init", NULL, maxbuflen);
/* end handle -E mkfs options */
/* Allow reformat of full devices (as opposed to partitions).
* We already checked for mounted dev.
*/
strscat(mop->mo_mkfsopts, " -F", sizeof(mop->mo_mkfsopts));
snprintf(mkfs_cmd, sizeof(mkfs_cmd), "%s -j -b %d -L %s ", MKE2FS,
mop->mo_blocksize_kb * 1024, mop->mo_ldd.ldd_svname);
/* For loop device format the dev, not the filename */
dev = mop->mo_device;
if (mop->mo_flags & MO_IS_LOOP)
dev = mop->mo_loopdev;
vprint("formatting backing filesystem %s on %s\n",
MT_STR(&mop->mo_ldd), dev);
vprint("\ttarget name %s\n", mop->mo_ldd.ldd_svname);
vprint("\tkilobytes %llu\n", mop->mo_device_kb);
vprint("\toptions %s\n", mop->mo_mkfsopts);
/* mkfs_cmd's trailing space is important! */
strscat(mkfs_cmd, mop->mo_mkfsopts, sizeof(mkfs_cmd));
strscat(mkfs_cmd, " ", sizeof(mkfs_cmd));
strscat(mkfs_cmd, dev, sizeof(mkfs_cmd));
if (mop->mo_device_kb != 0) {
snprintf(buf, sizeof(buf), " %lluk",
(unsigned long long)mop->mo_device_kb);
strscat(mkfs_cmd, buf, sizeof(mkfs_cmd));
}
vprint("mkfs_cmd = %s\n", mkfs_cmd);
ret = run_command(mkfs_cmd, sizeof(mkfs_cmd));
if (ret) {
fatal();
fprintf(stderr, "Unable to build fs %s (%d)\n", dev, ret);
}
return ret;
}
int main (int argc, char **argv)
{
ssize_t ret_size;
struct stat st;
int ret, flags;
long long this_time, time_total;
long long part_min, part_max, time_min, time_max;
double time_sum, time_sum2, time_mdev, time_avg;
double part_sum, part_sum2, part_mdev, part_avg;
parse_options(argc, argv);
if (wsize)
temp_wsize = wsize;
else if (size > temp_wsize)
temp_wsize = size;
if (size <= 0)
errx(1, "request size must be greather than zero");
flags = O_RDONLY;
#if !defined(HAVE_POSIX_FADVICE) && !defined(HAVE_NOCACHE_IO) && \
defined(HAVE_DIRECT_IO)
direct |= !cached;
#endif
if (direct)
#ifdef HAVE_DIRECT_IO
flags |= O_DIRECT;
#else
errx(1, "direct I/O not supportted by this platform");
#endif
if (stat(path, &st))
err(2, "stat \"%s\" failed", path);
if (S_ISDIR(st.st_mode) || S_ISREG(st.st_mode)) {
if (S_ISDIR(st.st_mode))
st.st_size = offset + temp_wsize;
parse_device(st.st_dev);
} else if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)) {
fd = open(path, flags);
if (fd < 0)
err(2, "failed to open \"%s\"", path);
st.st_size = get_device_size(fd, &st);
fstype = "device";
device = malloc(32);
if (!device)
err(2, "no mem");
snprintf(device, 32, "%.1f Gb", (double)st.st_size/(1ll<<30));
} else {
errx(2, "unsupported destination: \"%s\"", path);
}
if (offset + wsize > st.st_size)
errx(2, "target is too small for this");
if (!wsize)
wsize = st.st_size - offset;
if (size > wsize)
errx(2, "request size is too big for this target");
ret = posix_memalign(&buf, sysconf(_SC_PAGE_SIZE), size);
if (ret)
errx(2, "buffer allocation failed");
memset(buf, '*', size);
if (S_ISDIR(st.st_mode)) {
char *tmpl = "/ioping.XXXXXX";
char *temp = malloc(strlen(path) + strlen(tmpl) + 1);
if (!temp)
err(2, NULL);
sprintf(temp, "%s%s", path, tmpl);
fd = mkstemp(temp);
if (fd < 0)
err(2, "failed to create temporary file at \"%s\"", path);
if (unlink(temp))
err(2, "unlink \"%s\" failed", temp);
if (fcntl(fd, F_SETFL, flags)) {
warn("fcntl failed");
if (direct)
errx(2, "please retry without -D");
errx(2, "it is so sad");
}
for (woffset = 0 ; woffset + size <= wsize ; woffset += size) {
if (pwrite(fd, buf, size, offset + woffset) != size)
err(2, "write failed");
}
if (fsync(fd))
err(2, "fsync failed");
free(temp);
} else if (S_ISREG(st.st_mode)) {
fd = open(path, flags);
if (fd < 0)
err(2, "failed to open \"%s\"", path);
}
if (!cached) {
#ifdef HAVE_POSIX_FADVICE
ret = posix_fadvise(fd, offset, wsize, POSIX_FADV_RANDOM);
if (ret)
err(2, "fadvise failed");
#endif
#ifdef HAVE_NOCACHE_IO
ret = fcntl(fd, F_NOCACHE, 1);
if (ret)
err(2, "fcntl nocache failed");
#endif
}
srandom(now());
if (deadline)
deadline += now();
set_signal(SIGINT, sig_exit);
request = 0;
woffset = 0;
part_min = time_min = LLONG_MAX;
part_max = time_max = LLONG_MIN;
part_sum = time_sum = 0;
part_sum2 = time_sum2 = 0;
time_total = now();
while (!exiting) {
request++;
if (randomize)
woffset = random() % (wsize / size) * size;
#ifdef HAVE_POSIX_FADVICE
if (!cached) {
ret = posix_fadvise(fd, offset + woffset, size,
POSIX_FADV_DONTNEED);
if (ret)
err(3, "fadvise failed");
}
#endif
this_time = now();
ret_size = pread(fd, buf, size, offset + woffset);
if (ret_size < 0 && errno != EINTR)
err(3, "read failed");
this_time = now() - this_time;
part_sum += this_time;
part_sum2 += this_time * this_time;
if (this_time < part_min)
part_min = this_time;
if (this_time > part_max)
part_max = this_time;
if (!quiet)
printf("%lld bytes from %s (%s %s): request=%d time=%.1f ms\n",
(long long)ret_size, path, fstype, device,
request, this_time / 1000.);
if (period && request % period == 0) {
part_avg = part_sum / period;
part_mdev = sqrt(part_sum2 / period - part_avg * part_avg);
printf("%lld %.0f %lld %.0f\n",
part_min, part_avg,
part_max, part_mdev);
time_sum += part_sum;
time_sum2 += part_sum2;
if (part_min < time_min)
time_min = part_min;
if (part_max > time_max)
time_max = part_max;
part_min = LLONG_MAX;
part_max = LLONG_MIN;
part_sum = part_sum2 = 0;
}
if (!randomize) {
woffset += size;
if (woffset + size > wsize)
woffset = 0;
}
if (exiting)
break;
if (count && request >= count)
break;
if (deadline && now() + interval >= deadline)
break;
usleep(interval);
}
time_total = now() - time_total;
time_sum += part_sum;
time_sum2 += part_sum2;
if (part_min < time_min)
time_min = part_min;
if (part_max > time_max)
time_max = part_max;
time_avg = time_sum / request;
time_mdev = sqrt(time_sum2 / request - time_avg * time_avg);
if (!quiet || !period) {
printf("\n--- %s (%s %s) ioping statistics ---\n",
path, fstype, device);
printf("%d requests completed in %.1f ms, "
"%.0f iops, %.1f mb/s\n",
request, time_total/1000.,
request * 1000000. / time_sum,
(double)request * size / time_sum /
(1<<20) * 1000000);
printf("min/avg/max/mdev = %.1f/%.1f/%.1f/%.1f ms\n",
time_min/1000., time_avg/1000.,
time_max/1000., time_mdev/1000.);
}
return 0;
}
int main (int argc, char **argv)
{
ssize_t ret_size;
struct stat st;
int ret, flags;
int part_request;
long long this_time;
double part_min, part_max, time_min, time_max;
double time_sum, time_sum2, time_mdev, time_avg;
double part_sum, part_sum2, part_mdev, part_avg;
long long time_now, time_next, period_deadline;
setvbuf(stdout, NULL, _IOLBF, 0);
parse_options(argc, argv);
interval_ts.tv_sec = interval / 1000000;
interval_ts.tv_nsec = (interval % 1000000) * 1000;
if (!size)
size = default_size;
if (size <= 0)
errx(1, "request size must be greather than zero");
#ifdef MAX_RW_COUNT
if (size > MAX_RW_COUNT)
warnx("this platform supports requests %u bytes at most",
MAX_RW_COUNT);
#endif
if (wsize)
temp_wsize = wsize;
else if (size > temp_wsize)
temp_wsize = size;
flags = O_RDONLY;
#if !defined(HAVE_POSIX_FADVICE) && !defined(HAVE_NOCACHE_IO)
# if defined(HAVE_DIRECT_IO)
direct |= !cached;
# else
if (!cached && !write_test) {
warnx("non-cached read I/O not supported by this platform");
warnx("you can use write I/O to get reliable results");
cached = 1;
}
# endif
#endif
if (write_test) {
flags = O_RDWR;
make_request = do_pwrite;
}
if (async)
aio_setup();
if (direct)
#ifdef HAVE_DIRECT_IO
flags |= O_DIRECT;
#else
errx(1, "direct I/O not supported by this platform");
#endif
#ifdef __MINGW32__
flags |= O_BINARY;
#endif
if (stat(path, &st))
err(2, "stat \"%s\" failed", path);
if (!S_ISDIR(st.st_mode) && write_test && write_test < 3)
errx(2, "think twice, then use -WWW to shred this target");
if (S_ISDIR(st.st_mode) || S_ISREG(st.st_mode)) {
if (S_ISDIR(st.st_mode))
st.st_size = offset + temp_wsize;
parse_device(st.st_dev);
} else if (S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode)) {
fd = open(path, flags);
if (fd < 0)
err(2, "failed to open \"%s\"", path);
if (get_device_size(fd, &st)) {
if (!S_ISCHR(st.st_mode))
err(2, "block get size ioctl failed");
st.st_size = offset + temp_wsize;
fstype = "character";
device = "device";
} else {
device_size = st.st_size;
fstype = "block";
device = "device ";
}
if (!cached && write_test && fdatasync(fd)) {
warnx("fdatasync not supported by \"%s\", "
"enable cached requests", path);
cached = 1;
}
} else {
errx(2, "unsupported destination: \"%s\"", path);
}
if (wsize > st.st_size || offset > st.st_size - wsize)
errx(2, "target is too small for this");
if (!wsize)
wsize = st.st_size - offset;
if (size > wsize)
errx(2, "request size is too big for this target");
ret = posix_memalign(&buf, 0x1000, size);
if (ret)
errx(2, "buffer allocation failed");
random_memory(buf, size);
if (S_ISDIR(st.st_mode)) {
fd = create_temp(path, "ioping.tmp");
if (fd < 0)
err(2, "failed to create temporary file at \"%s\"", path);
if (keep_file) {
if (fstat(fd, &st))
err(2, "fstat at \"%s\" failed", path);
if (st.st_size >= offset + wsize)
#ifndef __MINGW32__
if (st.st_blocks >= (st.st_size + 511) / 512)
#endif
goto skip_preparation;
}
for (woffset = 0 ; woffset < wsize ; woffset += ret_size) {
ret_size = size;
if (woffset + ret_size > wsize)
ret_size = wsize - woffset;
if (woffset)
random_memory(buf, ret_size);
ret_size = pwrite(fd, buf, ret_size, offset + woffset);
if (ret_size <= 0)
err(2, "preparation write failed");
}
skip_preparation:
if (fsync(fd))
err(2, "fsync failed");
} else if (S_ISREG(st.st_mode)) {
fd = open(path, flags);
if (fd < 0)
err(2, "failed to open \"%s\"", path);
}
if (!cached) {
#ifdef HAVE_POSIX_FADVICE
ret = posix_fadvise(fd, offset, wsize, POSIX_FADV_RANDOM);
if (ret)
err(2, "fadvise failed");
#endif
#ifdef HAVE_NOCACHE_IO
ret = fcntl(fd, F_NOCACHE, 1);
if (ret)
err(2, "fcntl nocache failed");
#endif
}
srandom(now());
if (deadline)
deadline += now();
set_signal();
request = 0;
woffset = 0;
part_request = 0;
part_min = time_min = LLONG_MAX;
part_max = time_max = LLONG_MIN;
part_sum = time_sum = 0;
part_sum2 = time_sum2 = 0;
time_now = now();
period_deadline = time_now + period_time;
while (!exiting) {
request++;
part_request++;
if (randomize)
woffset = random() % (wsize / size) * size;
#ifdef HAVE_POSIX_FADVICE
if (!cached) {
ret = posix_fadvise(fd, offset + woffset, size,
POSIX_FADV_DONTNEED);
if (ret)
err(3, "fadvise failed");
}
#endif
if (write_test)
shake_memory(buf, size);
this_time = now();
ret_size = make_request(fd, buf, size, offset + woffset);
if (ret_size < 0) {
if (errno != EINTR)
err(3, "request failed");
} else if (ret_size < size)
warnx("request returned less than expected: %zu", ret_size);
else if (ret_size > size)
errx(3, "request returned more than expected: %zu", ret_size);
time_now = now();
this_time = time_now - this_time;
time_next = time_now + interval;
part_sum += this_time;
part_sum2 += this_time * this_time;
if (this_time < part_min)
part_min = this_time;
if (this_time > part_max)
part_max = this_time;
if (!quiet) {
print_size(ret_size);
printf(" %s %s (%s %s", write_test ? "to" : "from",
path, fstype, device);
if (device_size)
print_size(device_size);
printf("): request=%d time=", request);
print_time(this_time);
printf("\n");
}
if ((period_request && (part_request >= period_request)) ||
(period_time && (time_next >= period_deadline))) {
part_avg = part_sum / part_request;
part_mdev = sqrt(part_sum2 / part_request - part_avg * part_avg);
printf("%d %.0f %.0f %.0f %.0f %.0f %.0f %.0f\n",
part_request, part_sum,
1000000. * part_request / part_sum,
1000000. * part_request * size / part_sum,
part_min, part_avg,
part_max, part_mdev);
time_sum += part_sum;
time_sum2 += part_sum2;
if (part_min < time_min)
time_min = part_min;
if (part_max > time_max)
time_max = part_max;
part_min = LLONG_MAX;
part_max = LLONG_MIN;
part_sum = part_sum2 = 0;
part_request = 0;
period_deadline = time_now + period_time;
}
if (!randomize) {
woffset += size;
if (woffset + size > wsize)
woffset = 0;
}
if (exiting)
break;
if (stop_at_request && request >= stop_at_request)
break;
if (deadline && time_next >= deadline)
break;
if (interval)
nanosleep(&interval_ts, NULL);
}
time_sum += part_sum;
time_sum2 += part_sum2;
if (part_min < time_min)
time_min = part_min;
if (part_max > time_max)
time_max = part_max;
time_avg = time_sum / request;
time_mdev = sqrt(time_sum2 / request - time_avg * time_avg);
if (batch_mode) {
printf("%d %.0f %.0f %.0f %.0f %.0f %.0f %.0f\n",
request, time_sum,
1000000. * request / time_sum,
1000000. * request * size / time_sum,
time_min, time_avg,
time_max, time_mdev);
} else if (!quiet || (!period_time && !period_request)) {
printf("\n--- %s (%s %s", path, fstype, device);
if (device_size)
print_size(device_size);
printf(") ioping statistics ---\n");
print_int(request);
printf(" requests completed in ");
print_time(time_sum);
printf(", ");
print_size((long long)request * size);
printf(" %s, ", write_test ? "written" : "read");
print_int(1000000. * request / time_sum);
printf(" iops, ");
print_size(1000000. * request * size / time_sum);
printf("/s\n");
printf("min/avg/max/mdev = ");
print_time(time_min);
printf(" / ");
print_time(time_avg);
printf(" / ");
print_time(time_max);
printf(" / ");
print_time(time_mdev);
printf("\n");
}
return 0;
}
