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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
syntax = "proto2";
package perfetto.protos;
import "protos/perfetto/common/sys_stats_counters.proto";
// This file defines the configuration for the Linux /proc poller data source,
// which injects counters in the trace.
// Counters that are needed in the trace must be explicitly listed in the
// *_counters fields. This is to avoid spamming the trace with all counters
// at all times.
// The sampling rate is configurable. All polling rates (*_period_ms) need
// to be integer multiples of each other.
// OK: [10ms, 10ms, 10ms], [10ms, 20ms, 10ms], [10ms, 20ms, 60ms]
// Not OK: [10ms, 10ms, 11ms], [10ms, 15ms, 20ms]
message SysStatsConfig {
// Polls /proc/meminfo every X ms, if non-zero.
// This is required to be > 10ms to avoid excessive CPU usage.
// Cost: 0.3 ms [read] + 0.07 ms [parse + trace injection]
optional uint32 meminfo_period_ms = 1;
// If empty all known counters are reported. Otherwise, only the counters
// specified below are reported.
repeated MeminfoCounters meminfo_counters = 2;
// Polls /proc/vmstat every X ms, if non-zero.
// This is required to be > 10ms to avoid excessive CPU usage.
// Cost: 0.2 ms [read] + 0.3 ms [parse + trace injection]
optional uint32 vmstat_period_ms = 3;
repeated VmstatCounters vmstat_counters = 4;
// Pols /proc/stat every X ms, if non-zero.
// This is required to be > 10ms to avoid excessive CPU usage.
// Cost: 4.1 ms [read] + 1.9 ms [parse + trace injection]
optional uint32 stat_period_ms = 5;
enum StatCounters {
STAT_UNSPECIFIED = 0;
STAT_CPU_TIMES = 1;
STAT_IRQ_COUNTS = 2;
STAT_SOFTIRQ_COUNTS = 3;
STAT_FORK_COUNT = 4;
}
repeated StatCounters stat_counters = 6;
// Polls /sys/devfreq/*/curfreq every X ms, if non-zero.
// This is required to be > 10ms to avoid excessive CPU usage.
// This option can be used to record unchanging values.
// Updates from frequency changes can come from ftrace/set_clock_rate.
optional uint32 devfreq_period_ms = 7;
// Polls /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq every X ms.
// This is required to be > 10ms to avoid excessive CPU usage.
optional uint32 cpufreq_period_ms = 8;
}
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