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stat.c
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stat.c
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#include <stdio.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <libgen.h>
#include <math.h>
#include "fio.h"
#include "diskutil.h"
#include "lib/ieee754.h"
void update_rusage_stat(struct thread_data *td)
{
struct thread_stat *ts = &td->ts;
getrusage(RUSAGE_SELF, &td->ru_end);
ts->usr_time += mtime_since(&td->ru_start.ru_utime,
&td->ru_end.ru_utime);
ts->sys_time += mtime_since(&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 int 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_clz(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 int plat_idx_to_val(unsigned int idx)
{
unsigned int error_bits, 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 = 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;
}
static unsigned int calc_clat_percentiles(unsigned int *io_u_plat,
unsigned long nr, fio_fp64_t *plist,
unsigned int **output,
unsigned int *maxv,
unsigned int *minv)
{
unsigned long sum = 0;
unsigned int len, i, j = 0;
unsigned int oval_len = 0;
unsigned int *ovals = NULL;
int is_last;
*minv = -1U;
*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((void*)plist, len, sizeof(plist[0]), double_cmp);
/*
* Calculate bucket values, note down max and min values
*/
is_last = 0;
for (i = 0; i < FIO_IO_U_PLAT_NR && !is_last; i++) {
sum += io_u_plat[i];
while (sum >= (plist[j].u.f / 100.0 * nr)) {
assert(plist[j].u.f <= 100.0);
if (j == oval_len) {
oval_len += 100;
ovals = realloc(ovals, oval_len * sizeof(unsigned int));
}
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);
if (is_last)
break;
j++;
}
}
*output = ovals;
return len;
}
/*
* Find and display the p-th percentile of clat
*/
static void show_clat_percentiles(unsigned int *io_u_plat, unsigned long nr,
fio_fp64_t *plist)
{
unsigned int len, j = 0, minv, maxv;
unsigned int *ovals;
int is_last, scale_down;
len = calc_clat_percentiles(io_u_plat, nr, plist, &ovals, &maxv, &minv);
if (!len)
goto out;
/*
* We default to usecs, but if the value range is such that we
* should scale down to msecs, do that.
*/
if (minv > 2000 && maxv > 99999) {
scale_down = 1;
log_info(" clat percentiles (msec):\n |");
} else {
scale_down = 0;
log_info(" clat percentiles (usec):\n |");
}
for (j = 0; j < len; j++) {
char fbuf[8];
/* for formatting */
if (j != 0 && (j % 4) == 0)
log_info(" |");
/* end of the list */
is_last = (j == len - 1);
if (plist[j].u.f < 10.0)
sprintf(fbuf, " %2.2f", plist[j].u.f);
else
sprintf(fbuf, "%2.2f", plist[j].u.f);
if (scale_down)
ovals[j] = (ovals[j] + 999) / 1000;
log_info(" %sth=[%5u]%c", fbuf, ovals[j], is_last ? '\n' : ',');
if (is_last)
break;
if (j % 4 == 3) /* for formatting */
log_info("\n");
}
out:
if (ovals)
free(ovals);
}
static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
double *mean, double *dev)
{
double n = is->samples;
if (is->samples == 0)
return 0;
*min = is->min_val;
*max = is->max_val;
n = (double) is->samples;
*mean = is->mean.u.f;
if (n > 1.0)
*dev = sqrt(is->S.u.f / (n - 1.0));
else
*dev = 0;
return 1;
}
void show_group_stats(struct group_run_stats *rs)
{
char *p1, *p2, *p3, *p4;
const char *ddir_str[] = { " READ", " WRITE" };
int i;
log_info("\nRun status group %d (all jobs):\n", rs->groupid);
for (i = 0; i <= DDIR_WRITE; i++) {
const int i2p = is_power_of_2(rs->kb_base);
if (!rs->max_run[i])
continue;
p1 = num2str(rs->io_kb[i], 6, rs->kb_base, i2p);
p2 = num2str(rs->agg[i], 6, rs->kb_base, i2p);
p3 = num2str(rs->min_bw[i], 6, rs->kb_base, i2p);
p4 = num2str(rs->max_bw[i], 6, rs->kb_base, i2p);
log_info("%s: io=%sB, aggrb=%sB/s, minb=%sB/s, maxb=%sB/s,"
" mint=%llumsec, maxt=%llumsec\n", ddir_str[i], p1, p2,
p3, p4, rs->min_run[i],
rs->max_run[i]);
free(p1);
free(p2);
free(p3);
free(p4);
}
}
#define ts_total_io_u(ts) \
((ts)->total_io_u[0] + (ts)->total_io_u[1])
static void stat_calc_dist(unsigned int *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,
unsigned int *src, int nr)
{
unsigned long total = ts_total_io_u(ts);
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;
}
}
static 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);
}
static 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 int usec_to_msec(unsigned long *min, unsigned long *max, double *mean,
double *dev)
{
if (*min > 1000 && *max > 1000 && *mean > 1000.0 && *dev > 1000.0) {
*min /= 1000;
*max /= 1000;
*mean /= 1000.0;
*dev /= 1000.0;
return 0;
}
return 1;
}
static void show_ddir_status(struct group_run_stats *rs, struct thread_stat *ts,
int ddir)
{
const char *ddir_str[] = { "read ", "write" };
unsigned long min, max, runt;
unsigned long long bw, iops;
double mean, dev;
char *io_p, *bw_p, *iops_p;
int i2p;
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], 6, 1, i2p);
bw_p = num2str(bw, 6, 1, i2p);
iops = (1000 * (uint64_t)ts->total_io_u[ddir]) / runt;
iops_p = num2str(iops, 6, 1, 0);
log_info(" %s: io=%sB, bw=%sB/s, iops=%s, runt=%6llumsec\n",
ddir_str[ddir], io_p, bw_p, iops_p,
ts->runtime[ddir]);
free(io_p);
free(bw_p);
free(iops_p);
if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev)) {
const char *base = "(usec)";
char *minp, *maxp;
if (!usec_to_msec(&min, &max, &mean, &dev))
base = "(msec)";
minp = num2str(min, 6, 1, 0);
maxp = num2str(max, 6, 1, 0);
log_info(" slat %s: min=%s, max=%s, avg=%5.02f,"
" stdev=%5.02f\n", base, minp, maxp, mean, dev);
free(minp);
free(maxp);
}
if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev)) {
const char *base = "(usec)";
char *minp, *maxp;
if (!usec_to_msec(&min, &max, &mean, &dev))
base = "(msec)";
minp = num2str(min, 6, 1, 0);
maxp = num2str(max, 6, 1, 0);
log_info(" clat %s: min=%s, max=%s, avg=%5.02f,"
" stdev=%5.02f\n", base, minp, maxp, mean, dev);
free(minp);
free(maxp);
}
if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev)) {
const char *base = "(usec)";
char *minp, *maxp;
if (!usec_to_msec(&min, &max, &mean, &dev))
base = "(msec)";
minp = num2str(min, 6, 1, 0);
maxp = num2str(max, 6, 1, 0);
log_info(" lat %s: min=%s, max=%s, avg=%5.02f,"
" stdev=%5.02f\n", base, minp, maxp, mean, dev);
free(minp);
free(maxp);
}
if (ts->clat_percentiles) {
show_clat_percentiles(ts->io_u_plat[ddir],
ts->clat_stat[ddir].samples,
ts->percentile_list);
}
if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
double p_of_agg = 100.0;
const char *bw_str = "KB";
if (rs->agg[ddir]) {
p_of_agg = mean * 100 / (double) rs->agg[ddir];
if (p_of_agg > 100.0)
p_of_agg = 100.0;
}
if (mean > 999999.9) {
min /= 1000.0;
max /= 1000.0;
mean /= 1000.0;
dev /= 1000.0;
bw_str = "MB";
}
log_info(" bw (%s/s) : min=%5lu, max=%5lu, per=%3.2f%%,"
" avg=%5.02f, stdev=%5.02f\n", bw_str, min, max,
p_of_agg, mean, dev);
}
}
static int show_lat(double *io_u_lat, int nr, const char **ranges,
const char *msg)
{
int new_line = 1, i, line = 0, shown = 0;
for (i = 0; i < nr; i++) {
if (io_u_lat[i] <= 0.0)
continue;
shown = 1;
if (new_line) {
if (line)
log_info("\n");
log_info(" lat (%s) : ", msg);
new_line = 0;
line = 0;
}
if (line)
log_info(", ");
log_info("%s%3.2f%%", ranges[i], io_u_lat[i]);
line++;
if (line == 5)
new_line = 1;
}
if (shown)
log_info("\n");
return shown;
}
static void show_lat_u(double *io_u_lat_u)
{
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");
}
static void show_lat_m(double *io_u_lat_m)
{
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");
}
static void show_latencies(double *io_u_lat_u, double *io_u_lat_m)
{
show_lat_u(io_u_lat_u);
show_lat_m(io_u_lat_m);
}
void show_thread_status(struct thread_stat *ts, struct group_run_stats *rs)
{
double usr_cpu, sys_cpu;
unsigned long runtime;
double io_u_dist[FIO_IO_U_MAP_NR];
double io_u_lat_u[FIO_IO_U_LAT_U_NR];
double io_u_lat_m[FIO_IO_U_LAT_M_NR];
time_t time_p;
char time_buf[64];
if (!(ts->io_bytes[0] + ts->io_bytes[1]) &&
!(ts->total_io_u[0] + ts->total_io_u[1]))
return;
time(&time_p);
ctime_r((const time_t *) &time_p, time_buf);
if (!ts->error) {
log_info("%s: (groupid=%d, jobs=%d): err=%2d: pid=%d: %s",
ts->name, ts->groupid, ts->members,
ts->error, (int) ts->pid, time_buf);
} else {
log_info("%s: (groupid=%d, jobs=%d): err=%2d (%s): pid=%d: %s",
ts->name, ts->groupid, ts->members,
ts->error, ts->verror, (int) ts->pid,
time_buf);
}
if (strlen(ts->description))
log_info(" Description : [%s]\n", ts->description);
if (ts->io_bytes[DDIR_READ])
show_ddir_status(rs, ts, DDIR_READ);
if (ts->io_bytes[DDIR_WRITE])
show_ddir_status(rs, ts, DDIR_WRITE);
stat_calc_lat_u(ts, io_u_lat_u);
stat_calc_lat_m(ts, io_u_lat_m);
show_latencies(io_u_lat_u, io_u_lat_m);
runtime = ts->total_run_time;
if (runtime) {
double runt = (double) runtime;
usr_cpu = (double) ts->usr_time * 100 / runt;
sys_cpu = (double) ts->sys_time * 100 / runt;
} else {
usr_cpu = 0;
sys_cpu = 0;
}
log_info(" cpu : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu, majf=%lu,"
" minf=%lu\n", usr_cpu, sys_cpu, ts->ctx, ts->majf, ts->minf);
stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
log_info(" IO depths : 1=%3.1f%%, 2=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%,"
" 16=%3.1f%%, 32=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
io_u_dist[1], io_u_dist[2],
io_u_dist[3], io_u_dist[4],
io_u_dist[5], io_u_dist[6]);
stat_calc_dist(ts->io_u_submit, ts->total_submit, io_u_dist);
log_info(" submit : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
" 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
io_u_dist[1], io_u_dist[2],
io_u_dist[3], io_u_dist[4],
io_u_dist[5], io_u_dist[6]);
stat_calc_dist(ts->io_u_complete, ts->total_complete, io_u_dist);
log_info(" complete : 0=%3.1f%%, 4=%3.1f%%, 8=%3.1f%%, 16=%3.1f%%,"
" 32=%3.1f%%, 64=%3.1f%%, >=64=%3.1f%%\n", io_u_dist[0],
io_u_dist[1], io_u_dist[2],
io_u_dist[3], io_u_dist[4],
io_u_dist[5], io_u_dist[6]);
log_info(" issued : total=r=%lu/w=%lu/d=%lu,"
" short=r=%lu/w=%lu/d=%lu\n",
ts->total_io_u[0], ts->total_io_u[1],
ts->total_io_u[2],
ts->short_io_u[0], ts->short_io_u[1],
ts->short_io_u[2]);
if (ts->continue_on_error) {
log_info(" errors : total=%lu, first_error=%d/<%s>\n",
ts->total_err_count,
ts->first_error,
strerror(ts->first_error));
}
}
static void show_ddir_status_terse(struct thread_stat *ts,
struct group_run_stats *rs, int ddir)
{
unsigned long min, max;
unsigned long long bw, iops;
unsigned int *ovals = NULL;
double mean, dev;
unsigned int len, minv, maxv;
int i;
assert(ddir_rw(ddir));
iops = bw = 0;
if (ts->runtime[ddir]) {
uint64_t runt = ts->runtime[ddir];
bw = ((1000 * ts->io_bytes[ddir]) / runt) / 1024;
iops = (1000 * (uint64_t) ts->total_io_u[ddir]) / runt;
}
log_info(";%llu;%llu;%llu;%llu", ts->io_bytes[ddir] >> 10, bw, iops,
ts->runtime[ddir]);
if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
else
log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
else
log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
if (ts->clat_percentiles) {
len = calc_clat_percentiles(ts->io_u_plat[ddir],
ts->clat_stat[ddir].samples,
ts->percentile_list, &ovals, &maxv,
&minv);
} else
len = 0;
for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
if (i >= len) {
log_info(";0%%=0");
continue;
}
log_info(";%2.2f%%=%u", ts->percentile_list[i].u.f, ovals[i]);
}
if (calc_lat(&ts->lat_stat[ddir], &min, &max, &mean, &dev))
log_info(";%lu;%lu;%f;%f", min, max, mean, dev);
else
log_info(";%lu;%lu;%f;%f", 0UL, 0UL, 0.0, 0.0);
if (ovals)
free(ovals);
if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
double p_of_agg = 100.0;
if (rs->agg[ddir]) {
p_of_agg = mean * 100 / (double) rs->agg[ddir];
if (p_of_agg > 100.0)
p_of_agg = 100.0;
}
log_info(";%lu;%lu;%f%%;%f;%f", min, max, p_of_agg, mean, dev);
} else
log_info(";%lu;%lu;%f%%;%f;%f", 0UL, 0UL, 0.0, 0.0, 0.0);
}
static void show_thread_status_terse_v2(struct thread_stat *ts,
struct group_run_stats *rs)
{
double io_u_dist[FIO_IO_U_MAP_NR];
double io_u_lat_u[FIO_IO_U_LAT_U_NR];
double io_u_lat_m[FIO_IO_U_LAT_M_NR];
double usr_cpu, sys_cpu;
int i;
/* General Info */
log_info("2;%s;%d;%d", ts->name, ts->groupid, ts->error);
/* Log Read Status */
show_ddir_status_terse(ts, rs, 0);
/* Log Write Status */
show_ddir_status_terse(ts, rs, 1);
/* CPU Usage */
if (ts->total_run_time) {
double runt = (double) ts->total_run_time;
usr_cpu = (double) ts->usr_time * 100 / runt;
sys_cpu = (double) ts->sys_time * 100 / runt;
} else {
usr_cpu = 0;
sys_cpu = 0;
}
log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
ts->minf);
/* Calc % distribution of IO depths, usecond, msecond latency */
stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
stat_calc_lat_u(ts, io_u_lat_u);
stat_calc_lat_m(ts, io_u_lat_m);
/* Only show fixed 7 I/O depth levels*/
log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
io_u_dist[4], io_u_dist[5], io_u_dist[6]);
/* Microsecond latency */
for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
log_info(";%3.2f%%", io_u_lat_u[i]);
/* Millisecond latency */
for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
log_info(";%3.2f%%", io_u_lat_m[i]);
/* Additional output if continue_on_error set - default off*/
if (ts->continue_on_error)
log_info(";%lu;%d", ts->total_err_count, ts->first_error);
log_info("\n");
/* Additional output if description is set */
if (ts->description)
log_info(";%s", ts->description);
log_info("\n");
}
#define FIO_TERSE_VERSION "3"
static void show_thread_status_terse_v3(struct thread_stat *ts,
struct group_run_stats *rs)
{
double io_u_dist[FIO_IO_U_MAP_NR];
double io_u_lat_u[FIO_IO_U_LAT_U_NR];
double io_u_lat_m[FIO_IO_U_LAT_M_NR];
double usr_cpu, sys_cpu;
int i;
/* General Info */
log_info("%s;%s;%s;%d;%d", FIO_TERSE_VERSION, fio_version_string,
ts->name, ts->groupid, ts->error);
/* Log Read Status */
show_ddir_status_terse(ts, rs, 0);
/* Log Write Status */
show_ddir_status_terse(ts, rs, 1);
/* CPU Usage */
if (ts->total_run_time) {
double runt = (double) ts->total_run_time;
usr_cpu = (double) ts->usr_time * 100 / runt;
sys_cpu = (double) ts->sys_time * 100 / runt;
} else {
usr_cpu = 0;
sys_cpu = 0;
}
log_info(";%f%%;%f%%;%lu;%lu;%lu", usr_cpu, sys_cpu, ts->ctx, ts->majf,
ts->minf);
/* Calc % distribution of IO depths, usecond, msecond latency */
stat_calc_dist(ts->io_u_map, ts_total_io_u(ts), io_u_dist);
stat_calc_lat_u(ts, io_u_lat_u);
stat_calc_lat_m(ts, io_u_lat_m);
/* Only show fixed 7 I/O depth levels*/
log_info(";%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%;%3.1f%%",
io_u_dist[0], io_u_dist[1], io_u_dist[2], io_u_dist[3],
io_u_dist[4], io_u_dist[5], io_u_dist[6]);
/* Microsecond latency */
for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
log_info(";%3.2f%%", io_u_lat_u[i]);
/* Millisecond latency */
for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
log_info(";%3.2f%%", io_u_lat_m[i]);
/* disk util stats, if any */
show_disk_util(1);
/* Additional output if continue_on_error set - default off*/
if (ts->continue_on_error)
log_info(";%lu;%d", ts->total_err_count, ts->first_error);
/* Additional output if description is set */
if (strlen(ts->description))
log_info(";%s", ts->description);
log_info("\n");
}
static void show_thread_status_terse(struct thread_stat *ts,
struct group_run_stats *rs)
{
if (terse_version == 2)
show_thread_status_terse_v2(ts, rs);
else if (terse_version == 3)
show_thread_status_terse_v3(ts, rs);
else
log_err("fio: bad terse version!? %d\n", terse_version);
}
static void sum_stat(struct io_stat *dst, struct io_stat *src, int nr)
{
double mean, S;
if (src->samples == 0)
return;
dst->min_val = min(dst->min_val, src->min_val);
dst->max_val = max(dst->max_val, src->max_val);
/*
* Compute new mean and S after the merge
* <http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
* #Parallel_algorithm>
*/
if (nr == 1) {
mean = src->mean.u.f;
S = src->S.u.f;
} else {
double delta = src->mean.u.f - dst->mean.u.f;
mean = ((src->mean.u.f * src->samples) +
(dst->mean.u.f * dst->samples)) /
(dst->samples + src->samples);
S = src->S.u.f + dst->S.u.f + pow(delta, 2.0) *
(dst->samples * src->samples) /
(dst->samples + src->samples);
}
dst->samples += src->samples;
dst->mean.u.f = mean;
dst->S.u.f = S;
}
void sum_group_stats(struct group_run_stats *dst, struct group_run_stats *src)
{
int i;
for (i = 0; i < 2; i++) {
if (dst->max_run[i] < src->max_run[i])
dst->max_run[i] = src->max_run[i];
if (dst->min_run[i] && dst->min_run[i] > src->min_run[i])
dst->min_run[i] = src->min_run[i];
if (dst->max_bw[i] < src->max_bw[i])
dst->max_bw[i] = src->max_bw[i];
if (dst->min_bw[i] && dst->min_bw[i] > src->min_bw[i])
dst->min_bw[i] = src->min_bw[i];
dst->io_kb[i] += src->io_kb[i];
dst->agg[i] += src->agg[i];
}
}
void sum_thread_stats(struct thread_stat *dst, struct thread_stat *src, int nr)
{
int l, k;
for (l = 0; l <= DDIR_WRITE; l++) {
sum_stat(&dst->clat_stat[l], &src->clat_stat[l], nr);
sum_stat(&dst->slat_stat[l], &src->slat_stat[l], nr);
sum_stat(&dst->lat_stat[l], &src->lat_stat[l], nr);
sum_stat(&dst->bw_stat[l], &src->bw_stat[l], nr);
dst->io_bytes[l] += src->io_bytes[l];
if (dst->runtime[l] < src->runtime[l])
dst->runtime[l] = src->runtime[l];
}
dst->usr_time += src->usr_time;
dst->sys_time += src->sys_time;
dst->ctx += src->ctx;
dst->majf += src->majf;
dst->minf += src->minf;
for (k = 0; k < FIO_IO_U_MAP_NR; k++)
dst->io_u_map[k] += src->io_u_map[k];
for (k = 0; k < FIO_IO_U_MAP_NR; k++)
dst->io_u_submit[k] += src->io_u_submit[k];
for (k = 0; k < FIO_IO_U_MAP_NR; k++)
dst->io_u_complete[k] += src->io_u_complete[k];
for (k = 0; k < FIO_IO_U_LAT_U_NR; k++)
dst->io_u_lat_u[k] += src->io_u_lat_u[k];
for (k = 0; k < FIO_IO_U_LAT_M_NR; k++)
dst->io_u_lat_m[k] += src->io_u_lat_m[k];
for (k = 0; k <= 2; k++) {
dst->total_io_u[k] += src->total_io_u[k];
dst->short_io_u[k] += src->short_io_u[k];
}
for (k = 0; k <= DDIR_WRITE; k++) {
int m;
for (m = 0; m < FIO_IO_U_PLAT_NR; m++)
dst->io_u_plat[k][m] += src->io_u_plat[k][m];
}
dst->total_run_time += src->total_run_time;
dst->total_submit += src->total_submit;
dst->total_complete += src->total_complete;
}
void init_group_run_stat(struct group_run_stats *gs)
{
memset(gs, 0, sizeof(*gs));
gs->min_bw[0] = gs->min_run[0] = ~0UL;
gs->min_bw[1] = gs->min_run[1] = ~0UL;
}
void init_thread_stat(struct thread_stat *ts)
{
int j;
memset(ts, 0, sizeof(*ts));
for (j = 0; j <= DDIR_WRITE; j++) {
ts->lat_stat[j].min_val = -1UL;
ts->clat_stat[j].min_val = -1UL;
ts->slat_stat[j].min_val = -1UL;
ts->bw_stat[j].min_val = -1UL;
}
ts->groupid = -1;
}
void show_run_stats(void)
{
struct group_run_stats *runstats, *rs;
struct thread_data *td;
struct thread_stat *threadstats, *ts;
int i, j, nr_ts, last_ts, idx;
int kb_base_warned = 0;
runstats = malloc(sizeof(struct group_run_stats) * (groupid + 1));
for (i = 0; i < groupid + 1; i++)
init_group_run_stat(&runstats[i]);
/*
* find out how many threads stats we need. if group reporting isn't
* enabled, it's one-per-td.
*/
nr_ts = 0;
last_ts = -1;
for_each_td(td, i) {
if (!td->o.group_reporting) {
nr_ts++;
continue;
}
if (last_ts == td->groupid)
continue;
last_ts = td->groupid;
nr_ts++;
}
threadstats = malloc(nr_ts * sizeof(struct thread_stat));
for (i = 0; i < nr_ts; i++)
init_thread_stat(&threadstats[i]);
j = 0;
last_ts = -1;
idx = 0;
for_each_td(td, i) {
if (idx && (!td->o.group_reporting ||
(td->o.group_reporting && last_ts != td->groupid))) {
idx = 0;
j++;
}
last_ts = td->groupid;
ts = &threadstats[j];
ts->clat_percentiles = td->o.clat_percentiles;
if (td->o.overwrite_plist)
memcpy(ts->percentile_list, td->o.percentile_list, sizeof(td->o.percentile_list));
else
memcpy(ts->percentile_list, def_percentile_list, sizeof(def_percentile_list));
idx++;
ts->members++;
if (ts->groupid == -1) {
/*
* These are per-group shared already
*/
strncpy(ts->name, td->o.name, FIO_JOBNAME_SIZE);
if (td->o.description)