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utils/latmus: dump test information header with -g

This commit is contained in:
Philippe Gerum 2019-05-29 14:58:12 +02:00
parent 9cc7b9aa52
commit 13f521985a
2 changed files with 28 additions and 4 deletions
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2
include/evl/evl.h
View File

@ -33,6 +33,8 @@ void evl_sigdebug_handler(int sig, siginfo_t *si, void *ctxt);
unsigned int evl_detect_fpu(void);
extern const char *libevl_version_string;
#ifdef __cplusplus
}
#endif

30
utils/latmus.c
View File

@ -416,6 +416,21 @@ static void *measurement_thread(void *arg)
return NULL;
}
static void dump_procinfo(const char *path)
{
char buf[BUFSIZ];
FILE *fp;
fp = fopen(path, "r");
if (fp == NULL)
return;
while (fgets(buf, sizeof(buf), fp))
fprintf(plot_fp, "# %s", buf);
fclose(fp);
}
static void dump_gnuplot(time_t duration)
{
unsigned int start, stop;
@ -424,10 +439,17 @@ static void dump_gnuplot(time_t duration)
if (all_samples == 0)
return;
fprintf(plot_fp, "# %.2ld:%.2ld:%.2ld (%s, %d us period, priority %d)\n",
duration / 3600, (duration / 60) % 60, duration % 60,
context_labels[context_type],
period, sampler_priority);
dump_procinfo("/proc/version");
dump_procinfo("/proc/cmdline");
fprintf(plot_fp, "# libevl version: %s\n", libevl_version_string);
fprintf(plot_fp, "# sampling period: %u µs\n", period);
fprintf(plot_fp, "# context: %s\n", context_labels[context_type]);
if (test_klat || test_ulat) {
fprintf(plot_fp, "# thread priority: %d\n", sampler_priority);
fprintf(plot_fp, "# thread affinity: CPU%d\n", sampler_cpu);
}
fprintf(plot_fp, "# duration (hhmmss): %.2ld:%.2ld:%.2ld\n",
duration / 3600, (duration / 60) % 60, duration % 60);
fprintf(plot_fp, "# %11s|%11s|%11s|%8s|%6s|\n",
"----lat min", "----lat avg",
"----lat max", "-overrun", "---msw");