static void
printSimpleStats(const char *prefix, SimpleStats *ss)
{
- /* print NaN if no transactions where executed */
- double latency = ss->sum / ss->count;
- double stddev = sqrt(ss->sum2 / ss->count - latency * latency);
+ if (ss->count > 0)
+ {
+ double latency = ss->sum / ss->count;
+ double stddev = sqrt(ss->sum2 / ss->count - latency * latency);
- printf("%s average = %.3f ms\n", prefix, 0.001 * latency);
- printf("%s stddev = %.3f ms\n", prefix, 0.001 * stddev);
+ printf("%s average = %.3f ms\n", prefix, 0.001 * latency);
+ printf("%s stddev = %.3f ms\n", prefix, 0.001 * stddev);
+ }
}
/* print out results */
static void
printResults(TState *threads, StatsData *total, instr_time total_time,
- instr_time conn_total_time, int latency_late)
+ instr_time conn_total_time, int64 latency_late)
{
double time_include,
tps_include,
tps_exclude;
+ int64 ntx = total->cnt - total->skipped;
time_include = INSTR_TIME_GET_DOUBLE(total_time);
- tps_include = total->cnt / time_include;
- tps_exclude = total->cnt / (time_include -
- (INSTR_TIME_GET_DOUBLE(conn_total_time) / nclients));
+
+ /* tps is about actually executed transactions */
+ tps_include = ntx / time_include;
+ tps_exclude = ntx /
+ (time_include - (INSTR_TIME_GET_DOUBLE(conn_total_time) / nclients));
/* Report test parameters. */
printf("transaction type: %s\n",
{
printf("number of transactions per client: %d\n", nxacts);
printf("number of transactions actually processed: " INT64_FORMAT "/%d\n",
- total->cnt - total->skipped, nxacts * nclients);
+ ntx, nxacts * nclients);
}
else
{
printf("duration: %d s\n", duration);
printf("number of transactions actually processed: " INT64_FORMAT "\n",
- total->cnt);
+ ntx);
}
/* Remaining stats are nonsensical if we failed to execute any xacts */
100.0 * total->skipped / total->cnt);
if (latency_limit)
- printf("number of transactions above the %.1f ms latency limit: %d (%.3f %%)\n",
- latency_limit / 1000.0, latency_late,
- 100.0 * latency_late / total->cnt);
+ printf("number of transactions above the %.1f ms latency limit: " INT64_FORMAT "/" INT64_FORMAT " (%.3f %%)\n",
+ latency_limit / 1000.0, latency_late, ntx,
+ (ntx > 0) ? 100.0 * latency_late / ntx : 0.0);
if (throttle_delay || progress || latency_limit)
printSimpleStats("latency", &total->latency);
printf("tps = %f (excluding connections establishing)\n", tps_exclude);
/* Report per-script/command statistics */
- if (per_script_stats || latency_limit || is_latencies)
+ if (per_script_stats || is_latencies)
{
int i;
for (i = 0; i < num_scripts; i++)
{
- if (num_scripts > 1)
+ if (per_script_stats)
+ {
+ StatsData *sstats = &sql_script[i].stats;
+
printf("SQL script %d: %s\n"
" - weight: %d (targets %.1f%% of total)\n"
" - " INT64_FORMAT " transactions (%.1f%% of total, tps = %f)\n",
i + 1, sql_script[i].desc,
sql_script[i].weight,
100.0 * sql_script[i].weight / total_weight,
- sql_script[i].stats.cnt,
- 100.0 * sql_script[i].stats.cnt / total->cnt,
- sql_script[i].stats.cnt / time_include);
- else
- printf("script statistics:\n");
+ sstats->cnt,
+ 100.0 * sstats->cnt / total->cnt,
+ (sstats->cnt - sstats->skipped) / time_include);
- if (latency_limit)
- printf(" - number of transactions skipped: " INT64_FORMAT " (%.3f%%)\n",
- sql_script[i].stats.skipped,
- 100.0 * sql_script[i].stats.skipped / sql_script[i].stats.cnt);
+ if (throttle_delay && latency_limit && sstats->cnt > 0)
+ printf(" - number of transactions skipped: " INT64_FORMAT " (%.3f%%)\n",
+ sstats->skipped,
+ 100.0 * sstats->skipped / sstats->cnt);
- if (num_scripts > 1)
- printSimpleStats(" - latency", &sql_script[i].stats.latency);
+ printSimpleStats(" - latency", &sstats->latency);
+ }
/* Report per-command latencies */
if (is_latencies)
{
Command **commands;
- printf(" - statement latencies in milliseconds:\n");
+ if (per_script_stats)
+ printf(" - statement latencies in milliseconds:\n");
+ else
+ printf("statement latencies in milliseconds:\n");
for (commands = sql_script[i].commands;
*commands != NULL;
commands++)
+ {
+ SimpleStats *cstats = &(*commands)->stats;
+
printf(" %11.3f %s\n",
- 1000.0 * (*commands)->stats.sum /
- (*commands)->stats.count,
+ (cstats->count > 0) ?
+ 1000.0 * cstats->sum / cstats->count : 0.0,
(*commands)->line);
+ }
}
}
}
break;
case 'r':
benchmarking_option_set = true;
- per_script_stats = true;
is_latencies = true;
break;
case 's':
{
/* generate and show report */
StatsData cur;
- int64 run = now - last_report;
+ int64 run = now - last_report,
+ ntx;
double tps,
total_run,
latency,
* XXX: No locking. There is no guarantee that we get an
* atomic snapshot of the transaction count and latencies, so
* these figures can well be off by a small amount. The
- * progress is report's purpose is to give a quick overview of
+ * progress report's purpose is to give a quick overview of
* how the test is going, so that shouldn't matter too much.
* (If a read from a 64-bit integer is not atomic, you might
* get a "torn" read and completely bogus latencies though!)
cur.skipped += thread[i].stats.skipped;
}
+ /* we count only actually executed transactions */
+ ntx = (cur.cnt - cur.skipped) - (last.cnt - last.skipped);
total_run = (now - thread_start) / 1000000.0;
- tps = 1000000.0 * (cur.cnt - last.cnt) / run;
- latency = 0.001 * (cur.latency.sum - last.latency.sum) /
- (cur.cnt - last.cnt);
- sqlat = 1.0 * (cur.latency.sum2 - last.latency.sum2)
- / (cur.cnt - last.cnt);
- stdev = 0.001 * sqrt(sqlat - 1000000.0 * latency * latency);
- lag = 0.001 * (cur.lag.sum - last.lag.sum) /
- (cur.cnt - last.cnt);
+ tps = 1000000.0 * ntx / run;
+ if (ntx > 0)
+ {
+ latency = 0.001 * (cur.latency.sum - last.latency.sum) / ntx;
+ sqlat = 1.0 * (cur.latency.sum2 - last.latency.sum2) / ntx;
+ stdev = 0.001 * sqrt(sqlat - 1000000.0 * latency * latency);
+ lag = 0.001 * (cur.lag.sum - last.lag.sum) / ntx;
+ }
+ else
+ {
+ latency = sqlat = stdev = lag = 0;
+ }
if (progress_timestamp)
{
(long) tv.tv_sec, (long) (tv.tv_usec / 1000));
}
else
+ {
+ /* round seconds are expected, but the thread may be late */
snprintf(tbuf, sizeof(tbuf), "%.1f s", total_run);
+ }
fprintf(stderr,
"progress: %s, %.1f tps, lat %.3f ms stddev %.3f",
projects / postgresql / commitdiff