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queuelat: add statistics print 

Add statistics print at the end of each run.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
marcelo 2018-04-18 15:03:14 -03:00
parent 9e41e33d94
commit 08d255cb88
1 changed files with 81 additions and 2 deletions
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83
src/queuelat/queuelat.c
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@ -131,6 +131,74 @@ static void print_all_buckets(void)
}
}
static void print_max_bucketsec(void)
{
int i, bucket_nr;
unsigned long long highest_val = 0;
for (i = 0; i <= OUTLIER_BUCKET; i++) {
unsigned long long val = i*VALS_PER_BUCKET;
bucket_nr = val_to_bucket(val);
if (buckets[bucket_nr] != 0) {
highest_val = val;
}
}
bucket_nr = val_to_bucket(highest_val);
printf("Max loop processing time: [%lld - %lld] = %lld\n", highest_val,
highest_val + VALS_PER_BUCKET-1,
buckets[bucket_nr]);
return;
}
static void print_min_bucketsec(void)
{
int i, bucket_nr;
unsigned long long min_val = 0;
for (i = 0; i <= OUTLIER_BUCKET; i++) {
unsigned long long val = i*VALS_PER_BUCKET;
bucket_nr = val_to_bucket(val);
if (buckets[bucket_nr] != 0) {
min_val = val;
break;
}
}
bucket_nr = val_to_bucket(min_val);
printf("Min loop processing time: [%lld - %lld] = %lld\n", min_val,
min_val + VALS_PER_BUCKET-1,
buckets[bucket_nr]);
return;
}
static void print_avg_bucketsec(void)
{
int i, bucket_nr;
unsigned long long total_sum = 0;
unsigned long long nr_hits = 0;
for (i = 0; i <= OUTLIER_BUCKET; i++) {
unsigned long long val = i*VALS_PER_BUCKET;
unsigned long long maxtime;
bucket_nr = val_to_bucket(val);
maxtime = val + VALS_PER_BUCKET-1;
total_sum = total_sum + maxtime*buckets[bucket_nr];
nr_hits = nr_hits + buckets[bucket_nr];
}
printf("Avg loop processing time: %lld\n", total_sum / nr_hits);
}
static void print_all_buckets_drainlength(void)
{
int i, print_dotdotdot = 0;
@ -335,6 +403,17 @@ static void convert_to_ghz(double tsc_freq_mhz)
cycles_to_ns);
}
static void print_exit_info(void)
{
print_all_buckets();
printf("\n ---------------- \n");
print_min_bucketsec();
print_max_bucketsec();
print_avg_bucketsec();
}
void main_loop(void)
{
u64 a, b;
@ -405,7 +484,7 @@ void main_loop(void)
"queue_size=%d max_queue_len=%d\n",
queue_size, max_queue_len);
trace_write(buf, ret);
print_all_buckets();
print_exit_info();
exit(0);
}
}
@ -416,7 +495,7 @@ void main_loop(void)
void sig_handler(int sig)
{
print_all_buckets();
print_exit_info();
exit(0);
}