| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chromeos/services/secure_channel/latency_metrics_logger.h" |
| |
| #include "base/metrics/histogram_functions.h" |
| |
| namespace chromeos { |
| |
| namespace secure_channel { |
| |
| namespace { |
| |
| constexpr const base::TimeDelta kMinLatencyDuration = |
| base::TimeDelta::FromMilliseconds(1); |
| constexpr const base::TimeDelta kMaxLatencyDuration = |
| base::TimeDelta::FromSeconds(30); |
| |
| // Provide enough granularity so that durations <10s are assigned to buckets |
| // in the hundreds of milliseconds. |
| const int kNumMetricsBuckets = 100; |
| |
| } // namespace |
| |
| void LogLatencyMetric(const std::string& metric_name, |
| const base::TimeDelta& duration) { |
| base::UmaHistogramCustomTimes(metric_name, duration, kMinLatencyDuration, |
| kMaxLatencyDuration, kNumMetricsBuckets); |
| } |
| |
| } // namespace secure_channel |
| |
| } // namespace chromeos |
