results = {'lat_min_usec': latency.min_usec,
'lat_max_usec': latency.max_usec,
'lat_avg_usec': latency.avg_usec}
- if latency.hdrh:
+ if latency.hdrh_available():
results['hdrh'] = latency.hdrh
decoded_histogram = HdrHistogram.decode(latency.hdrh)
- # override min max and avg from hdrh
- results['lat_min_usec'] = decoded_histogram.get_min_value()
- results['lat_max_usec'] = decoded_histogram.get_max_value()
- results['lat_avg_usec'] = decoded_histogram.get_mean_value()
results['lat_percentile'] = {}
- for percentile in self.config.lat_percentiles:
- results['lat_percentile'][percentile] = decoded_histogram.\
- get_value_at_percentile(percentile)
-
+ # override min max and avg from hdrh (only if histogram is valid)
+ if decoded_histogram.get_total_count() != 0:
+ results['lat_min_usec'] = decoded_histogram.get_min_value()
+ results['lat_max_usec'] = decoded_histogram.get_max_value()
+ results['lat_avg_usec'] = decoded_histogram.get_mean_value()
+ for percentile in self.config.lat_percentiles:
+ results['lat_percentile'][percentile] = decoded_histogram.\
+ get_value_at_percentile(percentile)
+ else:
+ for percentile in self.config.lat_percentiles:
+ results['lat_percentile'][percentile] = 'n/a'
else:
results = {}
results['packets'] = counters