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1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17syntax = "proto2";
18
19import "protos/perfetto/config/trace_config.proto";
20
21package perfetto.protos;
22
23// This is the schema for the config files in /test/stress_test/configs/*.cfg.
24message StressTestConfig {
25  optional TraceConfig trace_config = 1;
26
27  // Shared Memory Buffer setup, passed as arguments to Tracing.Initialize().
28  optional uint32 shmem_size_kb = 2;
29  optional uint32 shmem_page_size_kb = 3;
30
31  // How many producer processes to spawn.
32  optional uint32 num_processes = 4;
33
34  // How many writer threads each producer process should spawn.
35  optional uint32 num_threads = 5;
36
37  // The producer will write events until one of the following is met:
38  // - trace_config.duration_ms is reached.
39  // - max_events is reached.
40  optional uint32 max_events = 6;
41
42  // If > 0 will write nested messages up to N levels deep. The size of each
43  // nested message depends on the payload_mean / sttdev arguments (below).
44  // This is to cover the patching logic.
45  optional uint32 nesting = 7;
46
47  // This submessage defines the timings of each writer worker thread.
48  message WriterTiming {
49    // The size of the payload written on each iteration.
50    optional double payload_mean = 1;
51    optional double payload_stddev = 2;
52
53    // The nominal event writing rate, expressed in events/sec.
54    // E.g. if payload_mean = 500 (bytes) and rate_mean = 1000 (Hz), each thread
55    // will write 500 KB / sec approximately (% stalling).
56    optional double rate_mean = 3;
57    optional double rate_stddev = 4;
58
59    // If non-zero each worker will slow down the writing of the payload:
60    // it writes half payload, sleep for payload_write_time_ms, then write the
61    // other half.
62    optional uint32 payload_write_time_ms = 5;
63  }
64
65  // The timings used by default.
66  optional WriterTiming steady_state_timings = 8;
67
68  // Optionally it is possible to cause a writer to enter "burst mode",
69  // simulating peaks of high-intensity writing. The way it works is the
70  // following: by default the writer writes events using the
71  // |steady_state_timings|. Then every |burst_period_ms| it will switch to the
72  // |burst_timings| for |burst_duration_ms|, and go back to the steady state
73  // after that (and then repeat).
74  optional uint32 burst_period_ms = 9;
75  optional uint32 burst_duration_ms = 10;
76  optional WriterTiming burst_timings = 11;
77}
78