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511 lines
16 KiB
511 lines
16 KiB
12 years ago
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// Copyright 2012 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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var kV8BinarySuffixes = ["/d8", "/libv8.so"];
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var kStackFrames = 8;
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var kTimerEventWidth = 0.33;
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var kExecutionFrameWidth = 0.2;
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var kStackFrameWidth = 0.1;
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var kGapWidth = 0.05;
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var kY1Offset = 10;
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var kResX = 1600;
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var kResY = 600;
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var kPauseLabelPadding = 5;
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var kNumPauseLabels = 7;
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var kTickHalfDuration = 0.5; // Milliseconds
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var kCodeKindLabelPadding = 100;
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var kMinRangeLength = 0.0005; // Milliseconds
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var num_timer_event = kY1Offset + 0.5;
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var kNumThreads = 2;
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var kExecutionThreadId = 0;
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function assert(something, message) {
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if (!something) {
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print(new Error(message).stack);
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}
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}
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function TimerEvent(color, pause, thread_id) {
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assert(thread_id >= 0 && thread_id < kNumThreads, "invalid thread id");
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this.color = color;
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this.pause = pause;
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this.ranges = [];
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this.thread_id = thread_id;
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this.index = ++num_timer_event;
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}
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var TimerEvents = {
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'V8.Execute': new TimerEvent("#000000", false, 0),
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'V8.External': new TimerEvent("#3399FF", false, 0),
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'V8.CompileFullCode': new TimerEvent("#CC0000", true, 0),
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'V8.RecompileSynchronous': new TimerEvent("#CC0044", true, 0),
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'V8.RecompileParallel': new TimerEvent("#CC4499", false, 1),
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'V8.CompileEval': new TimerEvent("#CC4400", true, 0),
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'V8.Parse': new TimerEvent("#00CC00", true, 0),
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'V8.PreParse': new TimerEvent("#44CC00", true, 0),
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'V8.ParseLazy': new TimerEvent("#00CC44", true, 0),
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'V8.GCScavenger': new TimerEvent("#0044CC", true, 0),
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'V8.GCCompactor': new TimerEvent("#4444CC", true, 0),
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'V8.GCContext': new TimerEvent("#4400CC", true, 0),
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}
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Array.prototype.top = function() {
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if (this.length == 0) return undefined;
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return this[this.length - 1];
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}
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var event_stack = [];
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var last_time_stamp = [];
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for (var i = 0; i < kNumThreads; i++) {
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event_stack[i] = [];
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last_time_stamp[i] = -1;
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}
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function CodeKind(color, kinds) {
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this.color = color;
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this.in_execution = [];
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this.stack_frames = [];
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for (var i = 0; i < kStackFrames; i++) this.stack_frames.push([]);
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this.kinds = kinds;
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}
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var CodeKinds = {
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'external ': new CodeKind("#3399FF", [-3]),
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'reg.exp. ': new CodeKind("#0000FF", [-2]),
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'runtime ': new CodeKind("#000000", [-1]),
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'full code': new CodeKind("#DD0000", [0]),
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'opt code ': new CodeKind("#00EE00", [1]),
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'code stub': new CodeKind("#FF00FF", [2]),
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'built-in ': new CodeKind("#AA00AA", [3]),
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'inl.cache': new CodeKind("#4444AA", [4, 5, 6, 7, 8, 9, 10, 11, 12, 13]),
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}
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var xrange_start;
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var xrange_end;
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var obj_index = 0;
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var execution_pauses = [];
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var code_map = new CodeMap();
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var xrange_start_override = undefined;
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var xrange_end_override = undefined;
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var distortion_per_entry = 0.005; // Milliseconds
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var pause_tolerance = 0.005; // Milliseconds.
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var distortion = 0;
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function Range(start, end) {
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// Everthing from here are in milliseconds.
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this.start = start;
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this.end = end;
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}
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function Tick(tick) {
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this.tick = tick;
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}
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Range.prototype.duration = function() { return this.end - this.start; }
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function ProcessTimerEventStart(name, start) {
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// Find out the thread id.
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var new_event = TimerEvents[name];
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if (new_event === undefined) return;
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var thread_id = new_event.thread_id;
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start = Math.max(last_time_stamp[thread_id] + kMinRangeLength, start);
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// Last event on this thread is done with the start of this event.
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var last_event = event_stack[thread_id].top();
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if (last_event !== undefined) {
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var new_range = new Range(last_time_stamp[thread_id], start);
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last_event.ranges.push(new_range);
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}
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event_stack[thread_id].push(new_event);
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last_time_stamp[thread_id] = start;
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}
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function ProcessTimerEventEnd(name, end) {
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// Find out about the thread_id.
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var finished_event = TimerEvents[name];
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var thread_id = finished_event.thread_id;
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assert(finished_event === event_stack[thread_id].pop(),
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"inconsistent event stack");
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end = Math.max(last_time_stamp[thread_id] + kMinRangeLength, end);
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var new_range = new Range(last_time_stamp[thread_id], end);
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finished_event.ranges.push(new_range);
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last_time_stamp[thread_id] = end;
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}
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function ProcessCodeCreateEvent(type, kind, address, size, name) {
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var code_entry = new CodeMap.CodeEntry(size, name);
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code_entry.kind = kind;
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code_map.addCode(address, code_entry);
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}
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function ProcessCodeMoveEvent(from, to) {
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code_map.moveCode(from, to);
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}
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function ProcessCodeDeleteEvent(address) {
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code_map.deleteCode(address);
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}
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function ProcessSharedLibrary(name, start, end) {
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var code_entry = new CodeMap.CodeEntry(end - start, name);
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code_entry.kind = -3; // External code kind.
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for (var i = 0; i < kV8BinarySuffixes.length; i++) {
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var suffix = kV8BinarySuffixes[i];
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if (name.indexOf(suffix, name.length - suffix.length) >= 0) {
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code_entry.kind = -1; // V8 runtime code kind.
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break;
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}
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}
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code_map.addLibrary(start, code_entry);
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}
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function FindCodeKind(kind) {
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for (name in CodeKinds) {
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if (CodeKinds[name].kinds.indexOf(kind) >= 0) {
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return CodeKinds[name];
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}
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}
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}
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function ProcessTickEvent(pc, sp, timer, unused_x, unused_y, vmstate, stack) {
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var tick = new Tick(timer);
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var entry = code_map.findEntry(pc);
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if (entry) FindCodeKind(entry.kind).in_execution.push(tick);
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for (var i = 0; i < kStackFrames; i++) {
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if (!stack[i]) break;
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var entry = code_map.findEntry(stack[i]);
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if (entry) FindCodeKind(entry.kind).stack_frames[i].push(tick);
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}
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}
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function FindPlotRange() {
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var start_found = (xrange_start_override || xrange_start_override == 0);
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var end_found = (xrange_end_override || xrange_end_override == 0);
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xrange_start = start_found ? xrange_start_override : Infinity;
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xrange_end = end_found ? xrange_end_override : -Infinity;
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if (start_found && end_found) return;
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for (name in TimerEvents) {
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var ranges = TimerEvents[name].ranges;
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for (var i = 0; i < ranges.length; i++) {
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if (ranges[i].start < xrange_start && !start_found) {
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xrange_start = ranges[i].start;
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}
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if (ranges[i].end > xrange_end && !end_found) {
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xrange_end = ranges[i].end;
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}
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}
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}
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for (codekind in CodeKinds) {
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var ticks = CodeKinds[codekind].in_execution;
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for (var i = 0; i < ticks.length; i++) {
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if (ticks[i].tick < xrange_start && !start_found) {
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xrange_start = ticks[i].tick;
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}
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if (ticks[i].tick > xrange_end && !end_found) {
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xrange_end = ticks[i].tick;
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}
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}
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}
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// Set pause tolerance to something appropriate for the plot resolution
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// to make it easier for gnuplot.
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pause_tolerance = (xrange_end - xrange_start) / kResX / 10;
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}
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function parseTimeStamp(timestamp) {
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distortion += distortion_per_entry;
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return parseInt(timestamp) / 1000 - distortion;
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}
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function ParseArguments(args) {
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var processor = new ArgumentsProcessor(args);
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do {
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if (!processor.parse()) break;
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var result = processor.result();
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var distortion = parseInt(result.distortion);
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if (isNaN(distortion)) break;
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// Convert picoseconds to milliseconds.
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distortion_per_entry = distortion / 1000000;
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var rangelimits = result.range.split(",");
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var range_start = parseInt(rangelimits[0]);
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var range_end = parseInt(rangelimits[1]);
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xrange_start_override = isNaN(range_start) ? undefined : range_start;
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xrange_end_override = isNaN(range_end) ? undefined : range_end;
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return;
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} while (false);
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processor.printUsageAndExit();
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}
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function CollectData() {
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// Collect data from log.
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var logreader = new LogReader(
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{ 'timer-event-start': { parsers: [null, parseTimeStamp],
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processor: ProcessTimerEventStart },
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'timer-event-end': { parsers: [null, parseTimeStamp],
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processor: ProcessTimerEventEnd },
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'shared-library': { parsers: [null, parseInt, parseInt],
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processor: ProcessSharedLibrary },
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'code-creation': { parsers: [null, parseInt, parseInt, parseInt, null],
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processor: ProcessCodeCreateEvent },
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'code-move': { parsers: [parseInt, parseInt],
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processor: ProcessCodeMoveEvent },
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'code-delete': { parsers: [parseInt],
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processor: ProcessCodeDeleteEvent },
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'tick': { parsers: [parseInt, parseInt, parseTimeStamp,
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null, null, parseInt, 'var-args'],
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processor: ProcessTickEvent }
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});
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var line;
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while (line = readline()) {
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logreader.processLogLine(line);
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}
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// Collect execution pauses.
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for (name in TimerEvents) {
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var event = TimerEvents[name];
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if (!event.pause) continue;
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var ranges = event.ranges;
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for (var j = 0; j < ranges.length; j++) execution_pauses.push(ranges[j]);
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}
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execution_pauses = MergeRanges(execution_pauses);
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}
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function DrawBar(row, color, start, end, width) {
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obj_index++;
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command = "set object " + obj_index + " rect";
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command += " from " + start + ", " + (row - width);
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command += " to " + end + ", " + (row + width);
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command += " fc rgb \"" + color + "\"";
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print(command);
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}
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function TicksToRanges(ticks) {
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var ranges = [];
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for (var i = 0; i < ticks.length; i++) {
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var tick = ticks[i].tick;
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ranges.push(new Range(tick - kTickHalfDuration, tick + kTickHalfDuration));
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}
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return ranges;
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}
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function MergeRanges(ranges) {
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ranges.sort(function(a, b) { return a.start - b.start; });
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var result = [];
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var j = 0;
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for (var i = 0; i < ranges.length; i = j) {
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var merge_start = ranges[i].start;
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if (merge_start > xrange_end) break; // Out of plot range.
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var merge_end = ranges[i].end;
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for (j = i + 1; j < ranges.length; j++) {
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var next_range = ranges[j];
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// Don't merge ranges if there is no overlap (including merge tolerance).
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if (next_range.start > merge_end + pause_tolerance) break;
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// Merge ranges.
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if (next_range.end > merge_end) { // Extend range end.
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merge_end = next_range.end;
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}
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}
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if (merge_end < xrange_start) continue; // Out of plot range.
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if (merge_end < merge_start) continue; // Not an actual range.
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result.push(new Range(merge_start, merge_end));
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}
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return result;
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}
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function RestrictRangesTo(ranges, start, end) {
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var result = [];
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for (var i = 0; i < ranges.length; i++) {
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if (ranges[i].start <= end && ranges[i].end >= start) {
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result.push(new Range(Math.max(ranges[i].start, start),
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Math.min(ranges[i].end, end)));
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}
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}
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return result;
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}
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function GnuplotOutput() {
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print("set terminal pngcairo size " + kResX + "," + kResY +
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" enhanced font 'Helvetica,10'");
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print("set yrange [0:" + (num_timer_event + 1) + "]");
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print("set xlabel \"execution time in ms\"");
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print("set xrange [" + xrange_start + ":" + xrange_end + "]");
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print("set style fill pattern 2 bo 1");
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print("set style rect fs solid 1 noborder");
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print("set style line 1 lt 1 lw 1 lc rgb \"#000000\"");
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print("set xtics out nomirror");
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print("unset key");
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var percentages = {};
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var total = 0;
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for (var name in TimerEvents) {
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var event = TimerEvents[name];
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var ranges = RestrictRangesTo(event.ranges, xrange_start, xrange_end);
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ranges = MergeRanges(ranges);
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var sum =
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ranges.map(function(range) { return range.duration(); })
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.reduce(function(a, b) { return a + b; }, 0);
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percentages[name] = (sum / (xrange_end - xrange_start) * 100).toFixed(1);
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}
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// Name Y-axis.
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var ytics = [];
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for (name in TimerEvents) {
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var index = TimerEvents[name].index;
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ytics.push('"' + name + ' (' + percentages[name] + '%%)" ' + index);
|
||
|
}
|
||
|
ytics.push('"code kind being executed"' + ' ' + (kY1Offset - 1));
|
||
|
ytics.push('"top ' + kStackFrames + ' js stack frames"' + ' ' +
|
||
|
(kY1Offset - 2));
|
||
|
ytics.push('"pause times" 0');
|
||
|
print("set ytics out nomirror (" + ytics.join(', ') + ")");
|
||
|
|
||
|
// Plot timeline.
|
||
|
for (var name in TimerEvents) {
|
||
|
var event = TimerEvents[name];
|
||
|
var ranges = MergeRanges(event.ranges);
|
||
|
for (var i = 0; i < ranges.length; i++) {
|
||
|
DrawBar(event.index, event.color,
|
||
|
ranges[i].start, ranges[i].end,
|
||
|
kTimerEventWidth);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Plot code kind gathered from ticks.
|
||
|
for (var name in CodeKinds) {
|
||
|
var code_kind = CodeKinds[name];
|
||
|
var offset = kY1Offset - 1;
|
||
|
// Top most frame.
|
||
|
var row = MergeRanges(TicksToRanges(code_kind.in_execution));
|
||
|
for (var j = 0; j < row.length; j++) {
|
||
|
DrawBar(offset, code_kind.color,
|
||
|
row[j].start, row[j].end, kExecutionFrameWidth);
|
||
|
}
|
||
|
offset = offset - 2 * kExecutionFrameWidth - kGapWidth;
|
||
|
// Javascript frames.
|
||
|
for (var i = 0; i < kStackFrames; i++) {
|
||
|
offset = offset - 2 * kStackFrameWidth - kGapWidth;
|
||
|
row = MergeRanges(TicksToRanges(code_kind.stack_frames[i]));
|
||
|
for (var j = 0; j < row.length; j++) {
|
||
|
DrawBar(offset, code_kind.color,
|
||
|
row[j].start, row[j].end, kStackFrameWidth);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Add labels as legend for code kind colors.
|
||
|
var padding = kCodeKindLabelPadding * (xrange_end - xrange_start) / kResX;
|
||
|
var label_x = xrange_start;
|
||
|
var label_y = kY1Offset;
|
||
|
for (var name in CodeKinds) {
|
||
|
label_x += padding;
|
||
|
print("set label \"" + name + "\" at " + label_x + "," + label_y +
|
||
|
" textcolor rgb \"" + CodeKinds[name].color + "\"" +
|
||
|
" font \"Helvetica,9'\"");
|
||
|
}
|
||
|
|
||
|
if (execution_pauses.length == 0) {
|
||
|
// Force plot and return without plotting execution pause impulses.
|
||
|
print("plot 1/0");
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
// Label the longest pauses.
|
||
|
execution_pauses.sort(
|
||
|
function(a, b) { return b.duration() - a.duration(); });
|
||
|
|
||
|
var max_pause_time = execution_pauses[0].duration();
|
||
|
padding = kPauseLabelPadding * (xrange_end - xrange_start) / kResX;
|
||
|
var y_scale = kY1Offset / max_pause_time / 2;
|
||
|
for (var i = 0; i < execution_pauses.length && i < kNumPauseLabels; i++) {
|
||
|
var pause = execution_pauses[i];
|
||
|
var label_content = (pause.duration() | 0) + " ms";
|
||
|
var label_x = pause.end + padding;
|
||
|
var label_y = Math.max(1, (pause.duration() * y_scale));
|
||
|
print("set label \"" + label_content + "\" at " +
|
||
|
label_x + "," + label_y + " font \"Helvetica,7'\"");
|
||
|
}
|
||
|
|
||
|
// Scale second Y-axis appropriately.
|
||
|
var y2range = max_pause_time * num_timer_event / kY1Offset * 2;
|
||
|
print("set y2range [0:" + y2range + "]");
|
||
|
// Plot graph with impulses as data set.
|
||
|
print("plot '-' using 1:2 axes x1y2 with impulses ls 1");
|
||
|
for (var i = 0; i < execution_pauses.length; i++) {
|
||
|
var pause = execution_pauses[i];
|
||
|
print(pause.end + " " + pause.duration());
|
||
|
}
|
||
|
print("e");
|
||
|
}
|
||
|
|
||
|
|
||
|
ParseArguments(arguments);
|
||
|
CollectData();
|
||
|
FindPlotRange();
|
||
|
GnuplotOutput();
|