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stat.c
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#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <math.h>
#include "fio.h"
#include "diskutil.h"
#include "lib/ieee754.h"
#include "json.h"
#include "lib/getrusage.h"
#include "idletime.h"
#include "lib/pow2.h"
#include "lib/output_buffer.h"
#include "helper_thread.h"
#include "smalloc.h"
#include "zbd.h"
#include "oslib/asprintf.h"
#define LOG_MSEC_SLACK 1
struct fio_sem *stat_sem;
void clear_rusage_stat(struct thread_data *td)
{
struct thread_stat *ts = &td->ts;
fio_getrusage(&td->ru_start);
ts->usr_time = ts->sys_time = 0;
ts->ctx = 0;
ts->minf = ts->majf = 0;
}
void update_rusage_stat(struct thread_data *td)
{
struct thread_stat *ts = &td->ts;
fio_getrusage(&td->ru_end);
ts->usr_time += mtime_since_tv(&td->ru_start.ru_utime,
&td->ru_end.ru_utime);
ts->sys_time += mtime_since_tv(&td->ru_start.ru_stime,
&td->ru_end.ru_stime);
ts->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw
- (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
ts->minf += td->ru_end.ru_minflt - td->ru_start.ru_minflt;
ts->majf += td->ru_end.ru_majflt - td->ru_start.ru_majflt;
memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
}
/*
* Given a latency, return the index of the corresponding bucket in
* the structure tracking percentiles.
*
* (1) find the group (and error bits) that the value (latency)
* belongs to by looking at its MSB. (2) find the bucket number in the
* group by looking at the index bits.
*
*/
static unsigned int plat_val_to_idx(unsigned long long val)
{
unsigned int msb, error_bits, base, offset, idx;
/* Find MSB starting from bit 0 */
if (val == 0)
msb = 0;
else
msb = (sizeof(val)*8) - __builtin_clzll(val) - 1;
/*
* MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
* all bits of the sample as index
*/
if (msb <= FIO_IO_U_PLAT_BITS)
return val;
/* Compute the number of error bits to discard*/
error_bits = msb - FIO_IO_U_PLAT_BITS;
/* Compute the number of buckets before the group */
base = (error_bits + 1) << FIO_IO_U_PLAT_BITS;
/*
* Discard the error bits and apply the mask to find the
* index for the buckets in the group
*/
offset = (FIO_IO_U_PLAT_VAL - 1) & (val >> error_bits);
/* Make sure the index does not exceed (array size - 1) */
idx = (base + offset) < (FIO_IO_U_PLAT_NR - 1) ?
(base + offset) : (FIO_IO_U_PLAT_NR - 1);
return idx;
}
/*
* Convert the given index of the bucket array to the value
* represented by the bucket
*/
static unsigned long long plat_idx_to_val(unsigned int idx)
{
unsigned int error_bits;
unsigned long long k, base;
assert(idx < FIO_IO_U_PLAT_NR);
/* MSB <= (FIO_IO_U_PLAT_BITS-1), cannot be rounded off. Use
* all bits of the sample as index */
if (idx < (FIO_IO_U_PLAT_VAL << 1))
return idx;
/* Find the group and compute the minimum value of that group */
error_bits = (idx >> FIO_IO_U_PLAT_BITS) - 1;
base = ((unsigned long long) 1) << (error_bits + FIO_IO_U_PLAT_BITS);
/* Find its bucket number of the group */
k = idx % FIO_IO_U_PLAT_VAL;
/* Return the mean of the range of the bucket */
return base + ((k + 0.5) * (1 << error_bits));
}
static int double_cmp(const void *a, const void *b)
{
const fio_fp64_t fa = *(const fio_fp64_t *) a;
const fio_fp64_t fb = *(const fio_fp64_t *) b;
int cmp = 0;
if (fa.u.f > fb.u.f)
cmp = 1;
else if (fa.u.f < fb.u.f)
cmp = -1;
return cmp;
}
unsigned int calc_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
fio_fp64_t *plist, unsigned long long **output,
unsigned long long *maxv, unsigned long long *minv)
{
unsigned long long sum = 0;
unsigned int len, i, j = 0;
unsigned long long *ovals = NULL;
bool is_last;
*minv = -1ULL;
*maxv = 0;
len = 0;
while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
len++;
if (!len)
return 0;
/*
* Sort the percentile list. Note that it may already be sorted if
* we are using the default values, but since it's a short list this
* isn't a worry. Also note that this does not work for NaN values.
*/
if (len > 1)
qsort(plist, len, sizeof(plist[0]), double_cmp);
ovals = malloc(len * sizeof(*ovals));
if (!ovals)
return 0;
/*
* Calculate bucket values, note down max and min values
*/
is_last = false;
for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
sum += io_u_plat[i];
while (sum >= ((long double) plist[j].u.f / 100.0 * nr)) {
assert(plist[j].u.f <= 100.0);
ovals[j] = plat_idx_to_val(i);
if (ovals[j] < *minv)
*minv = ovals[j];
if (ovals[j] > *maxv)
*maxv = ovals[j];
is_last = (j == len - 1) != 0;
if (is_last)
break;
j++;
}
}
if (!is_last)
log_err("fio: error calculating latency percentiles\n");
*output = ovals;
return len;
}
/*
* Find and display the p-th percentile of clat
*/
static void show_clat_percentiles(uint64_t *io_u_plat, unsigned long long nr,
fio_fp64_t *plist, unsigned int precision,
const char *pre, struct buf_output *out)
{
unsigned int divisor, len, i, j = 0;
unsigned long long minv, maxv;
unsigned long long *ovals;
int per_line, scale_down, time_width;
bool is_last;
char fmt[32];
len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
if (!len || !ovals)
goto out;
/*
* We default to nsecs, but if the value range is such that we
* should scale down to usecs or msecs, do that.
*/
if (minv > 2000000 && maxv > 99999999ULL) {
scale_down = 2;
divisor = 1000000;
log_buf(out, " %s percentiles (msec):\n |", pre);
} else if (minv > 2000 && maxv > 99999) {
scale_down = 1;
divisor = 1000;
log_buf(out, " %s percentiles (usec):\n |", pre);
} else {
scale_down = 0;
divisor = 1;
log_buf(out, " %s percentiles (nsec):\n |", pre);
}
time_width = max(5, (int) (log10(maxv / divisor) + 1));
snprintf(fmt, sizeof(fmt), " %%%u.%ufth=[%%%dllu]%%c", precision + 3,
precision, time_width);
/* fmt will be something like " %5.2fth=[%4llu]%c" */
per_line = (80 - 7) / (precision + 10 + time_width);
for (j = 0; j < len; j++) {
/* for formatting */
if (j != 0 && (j % per_line) == 0)
log_buf(out, " |");
/* end of the list */
is_last = (j == len - 1) != 0;
for (i = 0; i < scale_down; i++)
ovals[j] = (ovals[j] + 999) / 1000;
log_buf(out, fmt, plist[j].u.f, ovals[j], is_last ? '\n' : ',');
if (is_last)
break;
if ((j % per_line) == per_line - 1) /* for formatting */
log_buf(out, "\n");
}
out:
free(ovals);
}
bool calc_lat(struct io_stat *is, unsigned long long *min,
unsigned long long *max, double *mean, double *dev)
{
double n = (double) is->samples;
if (n == 0)
return false;
*min = is->min_val;
*max = is->max_val;
*mean = is->mean.u.f;
if (n > 1.0)
*dev = sqrt(is->S.u.f / (n - 1.0));
else
*dev = 0;
return true;
}
void show_group_stats(struct group_run_stats *rs, struct buf_output *out)
{
char *io, *agg, *min, *max;
char *ioalt, *aggalt, *minalt, *maxalt;
const char *str[] = { " READ", " WRITE" , " TRIM"};
int i;
log_buf(out, "\nRun status group %d (all jobs):\n", rs->groupid);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
const int i2p = is_power_of_2(rs->kb_base);
if (!rs->max_run[i])
continue;
io = num2str(rs->iobytes[i], rs->sig_figs, 1, i2p, N2S_BYTE);
ioalt = num2str(rs->iobytes[i], rs->sig_figs, 1, !i2p, N2S_BYTE);
agg = num2str(rs->agg[i], rs->sig_figs, 1, i2p, rs->unit_base);
aggalt = num2str(rs->agg[i], rs->sig_figs, 1, !i2p, rs->unit_base);
min = num2str(rs->min_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
minalt = num2str(rs->min_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
max = num2str(rs->max_bw[i], rs->sig_figs, 1, i2p, rs->unit_base);
maxalt = num2str(rs->max_bw[i], rs->sig_figs, 1, !i2p, rs->unit_base);
log_buf(out, "%s: bw=%s (%s), %s-%s (%s-%s), io=%s (%s), run=%llu-%llumsec\n",
rs->unified_rw_rep ? " MIXED" : str[i],
agg, aggalt, min, max, minalt, maxalt, io, ioalt,
(unsigned long long) rs->min_run[i],
(unsigned long long) rs->max_run[i]);
free(io);
free(agg);
free(min);
free(max);
free(ioalt);
free(aggalt);
free(minalt);
free(maxalt);
}
}
void stat_calc_dist(uint64_t *map, unsigned long total, double *io_u_dist)
{
int i;
/*
* Do depth distribution calculations
*/
for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
if (total) {
io_u_dist[i] = (double) map[i] / (double) total;
io_u_dist[i] *= 100.0;
if (io_u_dist[i] < 0.1 && map[i])
io_u_dist[i] = 0.1;
} else
io_u_dist[i] = 0.0;
}
}
static void stat_calc_lat(struct thread_stat *ts, double *dst,
uint64_t *src, int nr)
{
unsigned long total = ddir_rw_sum(ts->total_io_u);
int i;
/*
* Do latency distribution calculations
*/
for (i = 0; i < nr; i++) {
if (total) {
dst[i] = (double) src[i] / (double) total;
dst[i] *= 100.0;
if (dst[i] < 0.01 && src[i])
dst[i] = 0.01;
} else
dst[i] = 0.0;
}
}
/*
* To keep the terse format unaltered, add all of the ns latency
* buckets to the first us latency bucket
*/
static void stat_calc_lat_nu(struct thread_stat *ts, double *io_u_lat_u)
{
unsigned long ntotal = 0, total = ddir_rw_sum(ts->total_io_u);
int i;
stat_calc_lat(ts, io_u_lat_u, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
ntotal += ts->io_u_lat_n[i];
io_u_lat_u[0] += 100.0 * (double) ntotal / (double) total;
}
void stat_calc_lat_n(struct thread_stat *ts, double *io_u_lat)
{
stat_calc_lat(ts, io_u_lat, ts->io_u_lat_n, FIO_IO_U_LAT_N_NR);
}
void stat_calc_lat_u(struct thread_stat *ts, double *io_u_lat)
{
stat_calc_lat(ts, io_u_lat, ts->io_u_lat_u, FIO_IO_U_LAT_U_NR);
}
void stat_calc_lat_m(struct thread_stat *ts, double *io_u_lat)
{
stat_calc_lat(ts, io_u_lat, ts->io_u_lat_m, FIO_IO_U_LAT_M_NR);
}
static void display_lat(const char *name, unsigned long long min,
unsigned long long max, double mean, double dev,
struct buf_output *out)
{
const char *base = "(nsec)";
char *minp, *maxp;
if (nsec_to_msec(&min, &max, &mean, &dev))
base = "(msec)";
else if (nsec_to_usec(&min, &max, &mean, &dev))
base = "(usec)";
minp = num2str(min, 6, 1, 0, N2S_NONE);
maxp = num2str(max, 6, 1, 0, N2S_NONE);
log_buf(out, " %s %s: min=%s, max=%s, avg=%5.02f,"
" stdev=%5.02f\n", name, base, minp, maxp, mean, dev);
free(minp);
free(maxp);
}
static double convert_agg_kbytes_percent(struct group_run_stats *rs, int ddir, int mean)
{
double p_of_agg = 100.0;
if (rs && rs->agg[ddir] > 1024) {
p_of_agg = mean * 100 / (double) (rs->agg[ddir] / 1024.0);
if (p_of_agg > 100.0)
p_of_agg = 100.0;
}
return p_of_agg;
}
static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
int ddir, struct buf_output *out)
{
unsigned long runt;
unsigned long long min, max, bw, iops;
double mean, dev;
char *io_p, *bw_p, *bw_p_alt, *iops_p, *post_st = NULL;
int i2p;
if (ddir_sync(ddir)) {
if (calc_lat(&ts->sync_stat, &min, &max, &mean, &dev)) {
log_buf(out, " %s:\n", "fsync/fdatasync/sync_file_range");
display_lat(io_ddir_name(ddir), min, max, mean, dev, out);
show_clat_percentiles(ts->io_u_sync_plat,
ts->sync_stat.samples,
ts->percentile_list,
ts->percentile_precision,
io_ddir_name(ddir), out);
}
return;
}
assert(ddir_rw(ddir));
if (!ts->runtime[ddir])
return;
i2p = is_power_of_2(rs->kb_base);
runt = ts->runtime[ddir];
bw = (1000 * ts->io_bytes[ddir]) / runt;
io_p = num2str(ts->io_bytes[ddir], ts->sig_figs, 1, i2p, N2S_BYTE);
bw_p = num2str(bw, ts->sig_figs, 1, i2p, ts->unit_base);
bw_p_alt = num2str(bw, ts->sig_figs, 1, !i2p, ts->unit_base);
iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
iops_p = num2str(iops, ts->sig_figs, 1, 0, N2S_NONE);
if (ddir == DDIR_WRITE)
post_st = zbd_write_status(ts);
else if (ddir == DDIR_READ && ts->cachehit && ts->cachemiss) {
uint64_t total;
double hit;
total = ts->cachehit + ts->cachemiss;
hit = (double) ts->cachehit / (double) total;
hit *= 100.0;
if (asprintf(&post_st, "; Cachehit=%0.2f%%", hit) < 0)
post_st = NULL;
}
log_buf(out, " %s: IOPS=%s, BW=%s (%s)(%s/%llumsec)%s\n",
rs->unified_rw_rep ? "mixed" : io_ddir_name(ddir),
iops_p, bw_p, bw_p_alt, io_p,
(unsigned long long) ts->runtime[ddir],
post_st ? : "");
free(post_st);
free(io_p);
free(bw_p);
free(bw_p_alt);
free(iops_p);
if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
display_lat("slat", min, max, mean, dev, out);
if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
display_lat("clat", min, max, mean, dev, out);
if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
display_lat(" lat", min, max, mean, dev, out);
if (calc_lat(&ts->clat_high_prio_stat[ddir], &min, &max, &mean, &dev)) {
display_lat(ts->lat_percentiles ? "high prio_lat" : "high prio_clat",
min, max, mean, dev, out);
if (calc_lat(&ts->clat_low_prio_stat[ddir], &min, &max, &mean, &dev))
display_lat(ts->lat_percentiles ? "low prio_lat" : "low prio_clat",
min, max, mean, dev, out);
}
if (ts->slat_percentiles && ts->slat_stat[ddir].samples > 0)
show_clat_percentiles(ts->io_u_plat[FIO_SLAT][ddir],
ts->slat_stat[ddir].samples,
ts->percentile_list,
ts->percentile_precision, "slat", out);
if (ts->clat_percentiles && ts->clat_stat[ddir].samples > 0)
show_clat_percentiles(ts->io_u_plat[FIO_CLAT][ddir],
ts->clat_stat[ddir].samples,
ts->percentile_list,
ts->percentile_precision, "clat", out);
if (ts->lat_percentiles && ts->lat_stat[ddir].samples > 0)
show_clat_percentiles(ts->io_u_plat[FIO_LAT][ddir],
ts->lat_stat[ddir].samples,
ts->percentile_list,
ts->percentile_precision, "lat", out);
if (ts->clat_percentiles || ts->lat_percentiles) {
const char *name = ts->lat_percentiles ? "lat" : "clat";
char prio_name[32];
uint64_t samples;
if (ts->lat_percentiles)
samples = ts->lat_stat[ddir].samples;
else
samples = ts->clat_stat[ddir].samples;
/* Only print this if some high and low priority stats were collected */
if (ts->clat_high_prio_stat[ddir].samples > 0 &&
ts->clat_low_prio_stat[ddir].samples > 0)
{
sprintf(prio_name, "high prio (%.2f%%) %s",
100. * (double) ts->clat_high_prio_stat[ddir].samples / (double) samples,
name);
show_clat_percentiles(ts->io_u_plat_high_prio[ddir],
ts->clat_high_prio_stat[ddir].samples,
ts->percentile_list,
ts->percentile_precision, prio_name, out);
sprintf(prio_name, "low prio (%.2f%%) %s",
100. * (double) ts->clat_low_prio_stat[ddir].samples / (double) samples,
name);
show_clat_percentiles(ts->io_u_plat_low_prio[ddir],
ts->clat_low_prio_stat[ddir].samples,
ts->percentile_list,
ts->percentile_precision, prio_name, out);
}
}
if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
double p_of_agg = 100.0, fkb_base = (double)rs->kb_base;
const char *bw_str;
if ((rs->unit_base == 1) && i2p)
bw_str = "Kibit";
else if (rs->unit_base == 1)
bw_str = "kbit";
else if (i2p)
bw_str = "KiB";
else
bw_str = "kB";
p_of_agg = convert_agg_kbytes_percent(rs, ddir, mean);
if (rs->unit_base == 1) {
min *= 8.0;
max *= 8.0;
mean *= 8.0;
dev *= 8.0;
}
if (mean > fkb_base * fkb_base) {
min /= fkb_base;
max /= fkb_base;
mean /= fkb_base;
dev /= fkb_base;
bw_str = (rs->unit_base == 1 ? "Mibit" : "MiB");
}
log_buf(out, " bw (%5s/s): min=%5llu, max=%5llu, per=%3.2f%%, "
"avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
bw_str, min, max, p_of_agg, mean, dev,
(&ts->bw_stat[ddir])->samples);
}
if (calc_lat(&ts->iops_stat[ddir], &min, &max, &mean, &dev)) {
log_buf(out, " iops : min=%5llu, max=%5llu, "
"avg=%5.02f, stdev=%5.02f, samples=%" PRIu64 "\n",
min, max, mean, dev, (&ts->iops_stat[ddir])->samples);
}
}
static bool show_lat(double *io_u_lat, int nr, const char **ranges,
const char *msg, struct buf_output *out)
{
bool new_line = true, shown = false;
int i, line = 0;
for (i = 0; i < nr; i++) {
if (io_u_lat[i] <= 0.0)
continue;
shown = true;
if (new_line) {
if (line)
log_buf(out, "\n");
log_buf(out, " lat (%s) : ", msg);
new_line = false;
line = 0;
}
if (line)
log_buf(out, ", ");
log_buf(out, "%s%3.2f%%", ranges[i], io_u_lat[i]);
line++;
if (line == 5)
new_line = true;
}
if (shown)
log_buf(out, "\n");
return true;
}
static void show_lat_n(double *io_u_lat_n, struct buf_output *out)
{
const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
"250=", "500=", "750=", "1000=", };
show_lat(io_u_lat_n, FIO_IO_U_LAT_N_NR, ranges, "nsec", out);
}
static void show_lat_u(double *io_u_lat_u, struct buf_output *out)
{
const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
"250=", "500=", "750=", "1000=", };
show_lat(io_u_lat_u, FIO_IO_U_LAT_U_NR, ranges, "usec", out);
}
static void show_lat_m(double *io_u_lat_m, struct buf_output *out)
{
const char *ranges[] = { "2=", "4=", "10=", "20=", "50=", "100=",
"250=", "500=", "750=", "1000=", "2000=",
">=2000=", };
show_lat(io_u_lat_m, FIO_IO_U_LAT_M_NR, ranges, "msec", out);
}
static void show_latencies(struct thread_stat *ts, struct buf_output *out)
{
double io_u_lat_n[FIO_IO_U_LAT_N_NR];
double io_u_lat_u[FIO_IO_U_LAT_U_NR];
double io_u_lat_m[FIO_IO_U_LAT_M_NR];
stat_calc_lat_n(ts, io_u_lat_n);
stat_calc_lat_u(ts, io_u_lat_u);
stat_calc_lat_m(ts, io_u_lat_m);
show_lat_n(io_u_lat_n, out);
show_lat_u(io_u_lat_u, out);
show_lat_m(io_u_lat_m, out);
}
static int block_state_category(int block_state)
{
switch (block_state) {
case BLOCK_STATE_UNINIT:
return 0;
case BLOCK_STATE_TRIMMED:
case BLOCK_STATE_WRITTEN:
return 1;
case BLOCK_STATE_WRITE_FAILURE:
case BLOCK_STATE_TRIM_FAILURE:
return 2;
default:
/* Silence compile warning on some BSDs and have a return */
assert(0);
return -1;
}
}
static int compare_block_infos(const void *bs1, const void *bs2)
{
uint64_t block1 = *(uint64_t *)bs1;
uint64_t block2 = *(uint64_t *)bs2;
int state1 = BLOCK_INFO_STATE(block1);
int state2 = BLOCK_INFO_STATE(block2);
int bscat1 = block_state_category(state1);
int bscat2 = block_state_category(state2);
int cycles1 = BLOCK_INFO_TRIMS(block1);
int cycles2 = BLOCK_INFO_TRIMS(block2);
if (bscat1 < bscat2)
return -1;
if (bscat1 > bscat2)
return 1;
if (cycles1 < cycles2)
return -1;
if (cycles1 > cycles2)
return 1;
if (state1 < state2)
return -1;
if (state1 > state2)
return 1;
assert(block1 == block2);
return 0;
}
static int calc_block_percentiles(int nr_block_infos, uint32_t *block_infos,
fio_fp64_t *plist, unsigned int **percentiles,
unsigned int *types)
{
int len = 0;
int i, nr_uninit;
qsort(block_infos, nr_block_infos, sizeof(uint32_t), compare_block_infos);
while (len < FIO_IO_U_LIST_MAX_LEN && plist[len].u.f != 0.0)
len++;
if (!len)
return 0;
/*
* Sort the percentile list. Note that it may already be sorted if
* we are using the default values, but since it's a short list this
* isn't a worry. Also note that this does not work for NaN values.
*/
if (len > 1)
qsort(plist, len, sizeof(plist[0]), double_cmp);
/* Start only after the uninit entries end */
for (nr_uninit = 0;
nr_uninit < nr_block_infos
&& BLOCK_INFO_STATE(block_infos[nr_uninit]) == BLOCK_STATE_UNINIT;
nr_uninit ++)
;
if (nr_uninit == nr_block_infos)
return 0;
*percentiles = calloc(len, sizeof(**percentiles));
for (i = 0; i < len; i++) {
int idx = (plist[i].u.f * (nr_block_infos - nr_uninit) / 100)
+ nr_uninit;
(*percentiles)[i] = BLOCK_INFO_TRIMS(block_infos[idx]);
}
memset(types, 0, sizeof(*types) * BLOCK_STATE_COUNT);
for (i = 0; i < nr_block_infos; i++)
types[BLOCK_INFO_STATE(block_infos[i])]++;
return len;
}
static const char *block_state_names[] = {
[BLOCK_STATE_UNINIT] = "unwritten",
[BLOCK_STATE_TRIMMED] = "trimmed",
[BLOCK_STATE_WRITTEN] = "written",
[BLOCK_STATE_TRIM_FAILURE] = "trim failure",
[BLOCK_STATE_WRITE_FAILURE] = "write failure",
};
static void show_block_infos(int nr_block_infos, uint32_t *block_infos,
fio_fp64_t *plist, struct buf_output *out)
{
int len, pos, i;
unsigned int *percentiles = NULL;
unsigned int block_state_counts[BLOCK_STATE_COUNT];
len = calc_block_percentiles(nr_block_infos, block_infos, plist,
&percentiles, block_state_counts);
log_buf(out, " block lifetime percentiles :\n |");
pos = 0;
for (i = 0; i < len; i++) {
uint32_t block_info = percentiles[i];
#define LINE_LENGTH 75
char str[LINE_LENGTH];
int strln = snprintf(str, LINE_LENGTH, " %3.2fth=%u%c",
plist[i].u.f, block_info,
i == len - 1 ? '\n' : ',');
assert(strln < LINE_LENGTH);
if (pos + strln > LINE_LENGTH) {
pos = 0;
log_buf(out, "\n |");
}
log_buf(out, "%s", str);
pos += strln;
#undef LINE_LENGTH
}
if (percentiles)
free(percentiles);
log_buf(out, " states :");
for (i = 0; i < BLOCK_STATE_COUNT; i++)
log_buf(out, " %s=%u%c",
block_state_names[i], block_state_counts[i],
i == BLOCK_STATE_COUNT - 1 ? '\n' : ',');
}
static void show_ss_normal(struct thread_stat *ts, struct buf_output *out)
{
char *p1, *p1alt, *p2;
unsigned long long bw_mean, iops_mean;
const int i2p = is_power_of_2(ts->kb_base);
if (!ts->ss_dur)
return;
bw_mean = steadystate_bw_mean(ts);
iops_mean = steadystate_iops_mean(ts);
p1 = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, i2p, ts->unit_base);
p1alt = num2str(bw_mean / ts->kb_base, ts->sig_figs, ts->kb_base, !i2p, ts->unit_base);
p2 = num2str(iops_mean, ts->sig_figs, 1, 0, N2S_NONE);
log_buf(out, " steadystate : attained=%s, bw=%s (%s), iops=%s, %s%s=%.3f%s\n",
ts->ss_state & FIO_SS_ATTAINED ? "yes" : "no",
p1, p1alt, p2,
ts->ss_state & FIO_SS_IOPS ? "iops" : "bw",
ts->ss_state & FIO_SS_SLOPE ? " slope": " mean dev",
ts->ss_criterion.u.f,
ts->ss_state & FIO_SS_PCT ? "%" : "");
free(p1);
free(p1alt);
free(p2);
}
static void show_agg_stats(struct disk_util_agg *agg, int terse,
struct buf_output *out)
{
if (!agg->slavecount)
return;
if (!terse) {
log_buf(out, ", aggrios=%llu/%llu, aggrmerge=%llu/%llu, "
"aggrticks=%llu/%llu, aggrin_queue=%llu, "
"aggrutil=%3.2f%%",
(unsigned long long) agg->ios[0] / agg->slavecount,
(unsigned long long) agg->ios[1] / agg->slavecount,
(unsigned long long) agg->merges[0] / agg->slavecount,
(unsigned long long) agg->merges[1] / agg->slavecount,
(unsigned long long) agg->ticks[0] / agg->slavecount,
(unsigned long long) agg->ticks[1] / agg->slavecount,
(unsigned long long) agg->time_in_queue / agg->slavecount,
agg->max_util.u.f);
} else {
log_buf(out, ";slaves;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%",
(unsigned long long) agg->ios[0] / agg->slavecount,
(unsigned long long) agg->ios[1] / agg->slavecount,
(unsigned long long) agg->merges[0] / agg->slavecount,
(unsigned long long) agg->merges[1] / agg->slavecount,
(unsigned long long) agg->ticks[0] / agg->slavecount,
(unsigned long long) agg->ticks[1] / agg->slavecount,
(unsigned long long) agg->time_in_queue / agg->slavecount,
agg->max_util.u.f);
}
}
static void aggregate_slaves_stats(struct disk_util *masterdu)
{
struct disk_util_agg *agg = &masterdu->agg;
struct disk_util_stat *dus;
struct flist_head *entry;
struct disk_util *slavedu;
double util;
flist_for_each(entry, &masterdu->slaves) {
slavedu = flist_entry(entry, struct disk_util, slavelist);
dus = &slavedu->dus;
agg->ios[0] += dus->s.ios[0];
agg->ios[1] += dus->s.ios[1];
agg->merges[0] += dus->s.merges[0];
agg->merges[1] += dus->s.merges[1];
agg->sectors[0] += dus->s.sectors[0];
agg->sectors[1] += dus->s.sectors[1];
agg->ticks[0] += dus->s.ticks[0];
agg->ticks[1] += dus->s.ticks[1];
agg->time_in_queue += dus->s.time_in_queue;
agg->slavecount++;
util = (double) (100 * dus->s.io_ticks / (double) slavedu->dus.s.msec);
/* System utilization is the utilization of the
* component with the highest utilization.
*/
if (util > agg->max_util.u.f)
agg->max_util.u.f = util;
}
if (agg->max_util.u.f > 100.0)
agg->max_util.u.f = 100.0;
}
void print_disk_util(struct disk_util_stat *dus, struct disk_util_agg *agg,
int terse, struct buf_output *out)
{
double util = 0;
if (dus->s.msec)
util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec;
if (util > 100.0)
util = 100.0;
if (!terse) {
if (agg->slavecount)
log_buf(out, " ");
log_buf(out, " %s: ios=%llu/%llu, merge=%llu/%llu, "
"ticks=%llu/%llu, in_queue=%llu, util=%3.2f%%",
dus->name,
(unsigned long long) dus->s.ios[0],
(unsigned long long) dus->s.ios[1],
(unsigned long long) dus->s.merges[0],
(unsigned long long) dus->s.merges[1],
(unsigned long long) dus->s.ticks[0],
(unsigned long long) dus->s.ticks[1],
(unsigned long long) dus->s.time_in_queue,
util);
} else {
log_buf(out, ";%s;%llu;%llu;%llu;%llu;%llu;%llu;%llu;%3.2f%%",
dus->name,
(unsigned long long) dus->s.ios[0],
(unsigned long long) dus->s.ios[1],
(unsigned long long) dus->s.merges[0],
(unsigned long long) dus->s.merges[1],
(unsigned long long) dus->s.ticks[0],
(unsigned long long) dus->s.ticks[1],
(unsigned long long) dus->s.time_in_queue,
util);
}
/*
* If the device has slaves, aggregate the stats for
* those slave devices also.
*/
show_agg_stats(agg, terse, out);
if (!terse)
log_buf(out, "\n");
}
void json_array_add_disk_util(struct disk_util_stat *dus,
struct disk_util_agg *agg, struct json_array *array)
{
struct json_object *obj;
double util = 0;
if (dus->s.msec)
util = (double) 100 * dus->s.io_ticks / (double) dus->s.msec;
if (util > 100.0)
util = 100.0;
obj = json_create_object();
json_array_add_value_object(array, obj);
json_object_add_value_string(obj, "name", (const char *)dus->name);
json_object_add_value_int(obj, "read_ios", dus->s.ios[0]);
json_object_add_value_int(obj, "write_ios", dus->s.ios[1]);
json_object_add_value_int(obj, "read_merges", dus->s.merges[0]);
json_object_add_value_int(obj, "write_merges", dus->s.merges[1]);
json_object_add_value_int(obj, "read_ticks", dus->s.ticks[0]);
json_object_add_value_int(obj, "write_ticks", dus->s.ticks[1]);
json_object_add_value_int(obj, "in_queue", dus->s.time_in_queue);
json_object_add_value_float(obj, "util", util);
/*
* If the device has slaves, aggregate the stats for
* those slave devices also.
*/
if (!agg->slavecount)
return;
json_object_add_value_int(obj, "aggr_read_ios",
agg->ios[0] / agg->slavecount);
json_object_add_value_int(obj, "aggr_write_ios",
agg->ios[1] / agg->slavecount);
json_object_add_value_int(obj, "aggr_read_merges",
agg->merges[0] / agg->slavecount);
json_object_add_value_int(obj, "aggr_write_merge",
agg->merges[1] / agg->slavecount);
json_object_add_value_int(obj, "aggr_read_ticks",
agg->ticks[0] / agg->slavecount);
json_object_add_value_int(obj, "aggr_write_ticks",
agg->ticks[1] / agg->slavecount);
json_object_add_value_int(obj, "aggr_in_queue",
agg->time_in_queue / agg->slavecount);
json_object_add_value_float(obj, "aggr_util", agg->max_util.u.f);
}
static void json_object_add_disk_utils(struct json_object *obj,
struct flist_head *head)
{