234 lines
8.5 KiB
JavaScript
234 lines
8.5 KiB
JavaScript
// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
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const System = imports.system;
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const Main = imports.ui.main;
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const Scripting = imports.ui.scripting;
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// This performance script measure the most important (core) performance
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// metrics for the shell. By looking at the output metrics of this script
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// someone should be able to get an idea of how well the shell is performing
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// on a particular system.
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var METRICS = {
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overviewLatencyFirst:
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{ description: "Time to first frame after triggering overview, first time",
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units: "us" },
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overviewFpsFirst:
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{ description: "Frame rate when going to the overview, first time",
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units: "frames / s" },
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overviewLatencySubsequent:
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{ description: "Time to first frame after triggering overview, second time",
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units: "us"},
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overviewFpsSubsequent:
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{ description: "Frames rate when going to the overview, second time",
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units: "frames / s" },
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overviewFps5Windows:
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{ description: "Frames rate when going to the overview, 5 windows open",
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units: "frames / s" },
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overviewFps10Windows:
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{ description: "Frames rate when going to the overview, 10 windows open",
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units: "frames / s" },
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overviewFps5Maximized:
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{ description: "Frames rate when going to the overview, 5 maximized windows open",
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units: "frames / s" },
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overviewFps10Maximized:
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{ description: "Frames rate when going to the overview, 10 maximized windows open",
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units: "frames / s" },
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overviewFps5Alpha:
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{ description: "Frames rate when going to the overview, 5 alpha-transparent windows open",
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units: "frames / s" },
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overviewFps10Alpha:
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{ description: "Frames rate when going to the overview, 10 alpha-transparent windows open",
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units: "frames / s" },
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usedAfterOverview:
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{ description: "Malloc'ed bytes after the overview is shown once",
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units: "B" },
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leakedAfterOverview:
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{ description: "Additional malloc'ed bytes the second time the overview is shown",
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units: "B" },
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applicationsShowTimeFirst:
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{ description: "Time to switch to applications view, first time",
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units: "us" },
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applicationsShowTimeSubsequent:
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{ description: "Time to switch to applications view, second time",
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units: "us"}
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};
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let WINDOW_CONFIGS = [
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{ width: 640, height: 480, alpha: false, maximized: false, count: 1, metric: 'overviewFpsSubsequent' },
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{ width: 640, height: 480, alpha: false, maximized: false, count: 5, metric: 'overviewFps5Windows' },
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{ width: 640, height: 480, alpha: false, maximized: false, count: 10, metric: 'overviewFps10Windows' },
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{ width: 640, height: 480, alpha: false, maximized: true, count: 5, metric: 'overviewFps5Maximized' },
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{ width: 640, height: 480, alpha: false, maximized: true, count: 10, metric: 'overviewFps10Maximized' },
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{ width: 640, height: 480, alpha: true, maximized: false, count: 5, metric: 'overviewFps5Alpha' },
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{ width: 640, height: 480, alpha: true, maximized: false, count: 10, metric: 'overviewFps10Alpha' }
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];
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function *run() {
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Scripting.defineScriptEvent("overviewShowStart", "Starting to show the overview");
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Scripting.defineScriptEvent("overviewShowDone", "Overview finished showing");
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Scripting.defineScriptEvent("afterShowHide", "After a show/hide cycle for the overview");
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Scripting.defineScriptEvent("applicationsShowStart", "Starting to switch to applications view");
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Scripting.defineScriptEvent("applicationsShowDone", "Done switching to applications view");
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// Enable recording of timestamps for different points in the frame cycle
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global.frame_timestamps = true;
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Main.overview.connect('shown', () => {
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Scripting.scriptEvent('overviewShowDone');
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});
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yield Scripting.sleep(1000);
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for (let i = 0; i < 2 * WINDOW_CONFIGS.length; i++) {
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// We go to the overview twice for each configuration; the first time
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// to calculate the mipmaps for the windows, the second time to get
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// a clean set of numbers.
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if ((i % 2) == 0) {
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let config = WINDOW_CONFIGS[i / 2];
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yield Scripting.destroyTestWindows();
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for (let k = 0; k < config.count; k++)
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yield Scripting.createTestWindow({ width: config.width,
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height: config.height,
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alpha: config.alpha,
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maximized: config.maximized });
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yield Scripting.waitTestWindows();
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yield Scripting.sleep(1000);
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yield Scripting.waitLeisure();
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}
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Scripting.scriptEvent('overviewShowStart');
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Main.overview.show();
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yield Scripting.waitLeisure();
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Main.overview.hide();
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yield Scripting.waitLeisure();
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System.gc();
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yield Scripting.sleep(1000);
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Scripting.collectStatistics();
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Scripting.scriptEvent('afterShowHide');
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}
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yield Scripting.destroyTestWindows();
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yield Scripting.sleep(1000);
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Main.overview.show();
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yield Scripting.waitLeisure();
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for (let i = 0; i < 2; i++) {
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Scripting.scriptEvent('applicationsShowStart');
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Main.overview._dash.showAppsButton.checked = true;
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yield Scripting.waitLeisure();
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Scripting.scriptEvent('applicationsShowDone');
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Main.overview._dash.showAppsButton.checked = false;
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yield Scripting.waitLeisure();
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}
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}
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let showingOverview = false;
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let finishedShowingOverview = false;
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let overviewShowStart;
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let overviewFrames;
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let overviewLatency;
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let mallocUsedSize = 0;
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let overviewShowCount = 0;
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let haveSwapComplete = false;
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let applicationsShowStart;
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let applicationsShowCount = 0;
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function script_overviewShowStart(time) {
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showingOverview = true;
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finishedShowingOverview = false;
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overviewShowStart = time;
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overviewFrames = 0;
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}
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function script_overviewShowDone(time) {
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// We've set up the state at the end of the zoom out, but we
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// need to wait for one more frame to paint before we count
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// ourselves as done.
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finishedShowingOverview = true;
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}
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function script_applicationsShowStart(time) {
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applicationsShowStart = time;
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}
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function script_applicationsShowDone(time) {
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applicationsShowCount++;
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if (applicationsShowCount == 1)
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METRICS.applicationsShowTimeFirst.value = time - applicationsShowStart;
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else
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METRICS.applicationsShowTimeSubsequent.value = time - applicationsShowStart;
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}
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function script_afterShowHide(time) {
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if (overviewShowCount == 1) {
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METRICS.usedAfterOverview.value = mallocUsedSize;
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} else {
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METRICS.leakedAfterOverview.value = mallocUsedSize - METRICS.usedAfterOverview.value;
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}
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}
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function malloc_usedSize(time, bytes) {
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mallocUsedSize = bytes;
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}
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function _frameDone(time) {
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if (showingOverview) {
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if (overviewFrames == 0)
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overviewLatency = time - overviewShowStart;
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overviewFrames++;
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}
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if (finishedShowingOverview) {
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showingOverview = false;
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finishedShowingOverview = false;
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overviewShowCount++;
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let dt = (time - (overviewShowStart + overviewLatency)) / 1000000;
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// If we see a start frame and an end frame, that would
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// be 1 frame for a FPS computation, hence the '- 1'
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let fps = (overviewFrames - 1) / dt;
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if (overviewShowCount == 1) {
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METRICS.overviewLatencyFirst.value = overviewLatency;
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METRICS.overviewFpsFirst.value = fps;
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} else if (overviewShowCount == 2) {
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METRICS.overviewLatencySubsequent.value = overviewLatency;
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}
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// Other than overviewFpsFirst, we collect FPS metrics the second
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// we show each window configuration. overviewShowCount is 1,2,3...
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if (overviewShowCount % 2 == 0) {
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let config = WINDOW_CONFIGS[(overviewShowCount / 2) - 1];
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METRICS[config.metric].value = fps;
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}
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}
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}
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function glx_swapComplete(time, swapTime) {
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haveSwapComplete = true;
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_frameDone(swapTime);
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}
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function clutter_stagePaintDone(time) {
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// If we aren't receiving GLXBufferSwapComplete events, then we approximate
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// the time the user sees a frame with the time we finished doing drawing
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// commands for the frame. This doesn't take into account the time for
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// the GPU to finish painting, and the time for waiting for the buffer
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// swap, but if this are uniform - every frame takes the same time to draw -
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// then it won't upset our FPS calculation, though the latency value
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// will be slightly too low.
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if (!haveSwapComplete)
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_frameDone(time);
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}
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