1 // Copyright 2015 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 syntax = "proto2"; 6 7 package quipper; 8 9 // Stores output generated by the "perf stat" command. 10 // 11 // See https://perf.wiki.kernel.org/index.php/Tutorial#Counting_with_perf_stat 12 // for more details. 13 14 // Next tag: 3 15 message PerfStatProto { 16 // All lines printed by "perf stat". 17 repeated PerfStatLine line = 1; 18 19 // The command line used to run "perf stat". 20 optional string command_line = 2; 21 22 // Represents one line of "perf stat" output. 23 // Next tag: 4 24 message PerfStatLine { 25 // Time since the start of the "perf stat" command, in milliseconds. 26 // 27 // When running "perf stat" and printing the counters at the end, this is 28 // the total time taken by the run. 29 // 30 // Alternatively, "perf stat" can print its stats at regular intervals until 31 // the end of the run. For example, if "perf stat" runs for one second and 32 // prints at 200-ms intervals, it will print counter values for each event 33 // a total of five times. According to "perf stat" usage instructions, the 34 // printing interval should be no less than 100 ms. 35 optional uint64 time_ms = 1; 36 37 // Current count value of the event being counted. May be different from the 38 // nominal counter value reported by "perf stat", depending on the event. 39 // For example, memory access counters are in units of 64 bytes. A counter 40 // value of 1024 would represent 65536 bytes, and we would set this field to 41 // 65536. 42 optional uint64 count = 2; 43 44 // Name of event whose counter is listed on this line. 45 // This string should also appear as part of |PerfStatProto::command_line|. 46 // "perf stat" will preserve the event name exactly as it is passed in via 47 // the command line. 48 optional string event_name = 3; 49 } 50 } 51
