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Commit d83d33ac authored by Miguel Jimenez Lopez's avatar Miguel Jimenez Lopez
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irq-demo: Implement new metrics for stats-engine (max and min)

parent f4e96462
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Showing with 48 additions and 2 deletions
sw/irq-demo/dep/stats-engine-private.h
View file @ d83d33ac
......@@ -22,6 +22,8 @@
struct ts_stats {
double mean;
double std;
double min;
double max;
unsigned int ts_per_second;
unsigned int ts_total;
};
......@@ -56,6 +58,10 @@ static void LOG(stats_engine engine, const char *fmt, ...);
static int timespec_subtract(struct timespec *result,
struct timespec *x,
struct timespec *y);
static double compute_min(const double *values,
const unsigned int n_values);
static double compute_max(const double *values,
const unsigned int n_values);
static double compute_mean(const double *values,
const unsigned int n_values);
static double compute_stdev(const double *values,
......
sw/irq-demo/dep/stats-engine.c
View file @ d83d33ac
......@@ -92,6 +92,8 @@ int run_stats_engine(stats_engine engine, int verbose)
neg = timespec_subtract(&ts, &engine->sys_ts[engine->current_ts],
&(engine->usr_ts[engine->current_ts].t));
engine->diff_ts[engine->current_ts] = ((neg) ? -1.0 : 1.0)*(ts.tv_sec + ((double) ts.tv_nsec / NS_IN_A_SEC));
engine->stats.min = compute_min(engine->diff_ts, engine->n_ts);
engine->stats.max = compute_max(engine->diff_ts, engine->n_ts);
engine->stats.mean = compute_mean(engine->diff_ts, engine->n_ts);
engine->stats.std = compute_stdev(engine->diff_ts, engine->n_ts, engine->stats.mean);
count_ts = compute_ts_per_second(engine->usr_ts[engine->current_ts].t.tv_sec,
......@@ -157,9 +159,11 @@ static void log_stats_engine(stats_engine engine, int verbose)
}
LOG(engine, "\nMetrics => Total timestamps: %d, Timestamps per second: %d\n"
"max: %f %s, min %f %s\n"
"mean: %f %s, stdev: %f %s",
engine->stats.ts_total, engine->stats.ts_per_second, engine->stats.mean,
METRICS_UNIT, engine->stats.std, METRICS_UNIT);
engine->stats.ts_total, engine->stats.ts_per_second,
engine->stats.max, METRICS_UNIT, engine->stats.min, METRICS_UNIT,
engine->stats.mean, METRICS_UNIT, engine->stats.std, METRICS_UNIT);
LOG(engine, "\n============================================================\n");
log_clear(engine);
}
......@@ -242,6 +246,42 @@ static int timespec_subtract(struct timespec *result,
return (result->tv_sec < 0) || (result->tv_nsec<0);
}
static double compute_min(const double *values,
const unsigned int n_values)
{
double min = 0.0;
if(n_values == 0)
return min;
min = values[0];
for(int i = 1 ; i < n_values ; i++) {
if(values[i] < min)
min = values[i];
}
return min;
}
static double compute_max(const double *values,
const unsigned int n_values)
{
double max = 0.0;
if(n_values == 0)
return max;
max = values[0];
for(int i = 1 ; i < n_values ; i++) {
if(values[i] > max)
max = values[i];
}
return max;
}
static double compute_mean(const double *values,
const unsigned int n_values)
{
......
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