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Show median in burst stats

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This commit is contained in:
Rodrigo Arias 2022-09-30 12:09:19 +02:00
parent 404182c5fa
commit a9c3d016ed
1 changed files with 25 additions and 1 deletions
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26
src/emu_ovni.c
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@ -517,6 +517,20 @@ pre_affinity(struct ovni_emu *emu)
}
}
static int
compare_int64(const void *a, const void *b)
{
int64_t aa = *(const int64_t *) a;
int64_t bb = *(const int64_t *) b;
if (aa < bb)
return -1;
else if (aa > bb)
return +1;
else
return 0;
}
static void
pre_burst(struct ovni_emu *emu)
{
@ -533,6 +547,14 @@ pre_burst(struct ovni_emu *emu)
th->burst_time[th->nbursts++] = emu->delta_time;
if (th->nbursts == MAX_BURSTS) {
int n = MAX_BURSTS - 1;
int64_t deltas[MAX_BURSTS - 1];
for (int i = 0; i < n; i++) {
deltas[i] = th->burst_time[i + 1] - th->burst_time[i];
}
qsort(deltas, n, sizeof(int64_t), compare_int64);
double avg = 0.0;
double maxdelta = 0;
for (int i = 1; i < th->nbursts; i++) {
@ -543,8 +565,10 @@ pre_burst(struct ovni_emu *emu)
}
avg /= (double) th->nbursts;
double median = deltas[n / 2];
err("burst avg %.1f ns, max %.0f ns\n", avg, maxdelta);
err("%s burst stats: median %.0f ns, avg %.1f ns, max %.0f ns\n",
emu->cur_loom->dname, median, avg, maxdelta);
th->nbursts = 0;
}