Title: [273538] branches/safari-611-branch
Revision
273538
Author
[email protected]
Date
2021-02-25 19:40:15 -0800 (Thu, 25 Feb 2021)

Log Message

Unreviewed, reverting r273390 and r273391.
https://bugs.webkit.org/show_bug.cgi?id=222449

Didn't fix the extreme test variance, and caused some internal
performance bots to hang during testing

Reverted changesets:

"MotionMark scores are super sensitive to a single long frame"
https://bugs.webkit.org/show_bug.cgi?id=220847
https://trac.webkit.org/changeset/273390

"MotionMark scores are super sensitive to a single long frame"
https://bugs.webkit.org/show_bug.cgi?id=220847
https://trac.webkit.org/changeset/273391

* MotionMark/tests/resources/main.js:
(_measureAndResetInterval):
(update):
(start):
(didFinishInterval):
(filterOutOutliers): Deleted.
(registerFrameTime): Deleted.
(intervalHasConcluded): Deleted.

Modified Paths

Diff

Modified: branches/safari-611-branch/PerformanceTests/ChangeLog (273537 => 273538)


--- branches/safari-611-branch/PerformanceTests/ChangeLog	2021-02-26 02:52:05 UTC (rev 273537)
+++ branches/safari-611-branch/PerformanceTests/ChangeLog	2021-02-26 03:40:15 UTC (rev 273538)
@@ -1,3 +1,30 @@
+    2021-02-25  Myles C. Maxfield  <[email protected]>
+
+            Unreviewed, reverting r273390 and r273391.
+            https://bugs.webkit.org/show_bug.cgi?id=222449
+
+            Didn't fix the extreme test variance, and caused some internal
+            performance bots to hang during testing
+
+            Reverted changesets:
+
+            "MotionMark scores are super sensitive to a single long frame"
+            https://bugs.webkit.org/show_bug.cgi?id=220847
+            https://trac.webkit.org/changeset/273390
+
+            "MotionMark scores are super sensitive to a single long frame"
+            https://bugs.webkit.org/show_bug.cgi?id=220847
+            https://trac.webkit.org/changeset/273391
+
+            * MotionMark/tests/resources/main.js:
+            (_measureAndResetInterval):
+            (update):
+            (start):
+            (didFinishInterval):
+            (filterOutOutliers): Deleted.
+            (registerFrameTime): Deleted.
+            (intervalHasConcluded): Deleted.
+
 2021-02-23  Alan Coon  <[email protected]>
 
         Cherry-pick r273264. rdar://problem/74622873

Modified: branches/safari-611-branch/PerformanceTests/MotionMark/tests/resources/main.js (273537 => 273538)


--- branches/safari-611-branch/PerformanceTests/MotionMark/tests/resources/main.js	2021-02-26 02:52:05 UTC (rev 273537)
+++ branches/safari-611-branch/PerformanceTests/MotionMark/tests/resources/main.js	2021-02-26 03:40:15 UTC (rev 273538)
@@ -110,20 +110,6 @@
         return comment in this._marks;
     },
 
-    filterOutOutliers: function(array)
-    {
-        if (array.length == 0)
-            return [];
-
-        array.sort();
-        var q1 = array[Math.min(Math.round(array.length * 1 / 4), array.length - 1)];
-        var q3 = array[Math.min(Math.round(array.length * 3 / 4), array.length - 1)];
-        var interquartileRange = q3 - q1;
-        var minimum = q1 - interquartileRange * 1.5;
-        var maximum = q3 + interquartileRange * 1.5;
-        return array.filter(x => x >= minimum && x <= maximum);
-    },
-
     _measureAndResetInterval: function(currentTimestamp)
     {
         var sampleCount = this._sampler.sampleCount;
@@ -130,13 +116,8 @@
         var averageFrameLength = 0;
 
         if (this._intervalEndTimestamp) {
-            var durations = [];
-            for (var i = Math.max(this._intervalStartIndex, 1); i < sampleCount; ++i) {
-                durations.push(this._sampler.samples[0][i] - this._sampler.samples[0][i - 1]);
-            }
-            var filteredDurations = this.filterOutOutliers(durations);
-            if (filteredDurations.length > 0)
-                averageFrameLength = filteredDurations.reduce((a, b) => a + b, 0) / filteredDurations.length;
+            var intervalStartTimestamp = this._sampler.samples[0][this._intervalStartIndex];
+            averageFrameLength = (currentTimestamp - intervalStartTimestamp) / (sampleCount - this._intervalStartIndex);
         }
 
         this._intervalStartIndex = sampleCount;
@@ -157,19 +138,15 @@
                 this._frameLengthEstimator.sample(lastFrameLength);
                 frameLengthEstimate = this._frameLengthEstimator.estimate;
             }
-        } else {
-            this.registerFrameTime(lastFrameLength);
-            if (this.intervalHasConcluded(timestamp)) {
-                var intervalStartTimestamp = this._sampler.samples[0][this._intervalStartIndex];
-                intervalAverageFrameLength = this._measureAndResetInterval(timestamp);
-                if (this._isFrameLengthEstimatorEnabled) {
-                    this._frameLengthEstimator.sample(intervalAverageFrameLength);
-                    frameLengthEstimate = this._frameLengthEstimator.estimate;
-                }
-                didFinishInterval = true;
-                this.didFinishInterval(timestamp, stage, intervalAverageFrameLength);
-                this._frameLengthEstimator.reset();
+        } else if (timestamp >= this._intervalEndTimestamp) {
+            var intervalStartTimestamp = this._sampler.samples[0][this._intervalStartIndex];
+            intervalAverageFrameLength = this._measureAndResetInterval(timestamp);
+            if (this._isFrameLengthEstimatorEnabled) {
+                this._frameLengthEstimator.sample(intervalAverageFrameLength);
+                frameLengthEstimate = this._frameLengthEstimator.estimate;
             }
+            didFinishInterval = true;
+            this.didFinishInterval(timestamp, stage, intervalAverageFrameLength);
         }
 
         this._sampler.record(timestamp, stage.complexity(), frameLengthEstimate);
@@ -176,15 +153,6 @@
         this.tune(timestamp, stage, lastFrameLength, didFinishInterval, intervalAverageFrameLength);
     },
 
-    registerFrameTime: function(lastFrameLength)
-    {
-    },
-
-    intervalHasConcluded: function(timestamp)
-    {
-        return timestamp >= this._intervalEndTimestamp;
-    },
-
     didFinishInterval: function(timestamp, stage, intervalAverageFrameLength)
     {
     },
@@ -368,8 +336,6 @@
     tierFastTestLength: 250,
     // If the engine is under stress, let the test run a little longer to let the measurement settle
     tierSlowTestLength: 750,
-    // Tier intervals must have this number of non-outlier frames in order to end.
-    numberOfFramesRequiredInInterval: 9,
 
     rampWarmupLength: 200,
 
@@ -389,25 +355,10 @@
         Controller.prototype.start.call(this, startTimestamp, stage);
         this._rampStartTimestamp = 0;
         this.intervalSamplingLength = 100;
-        this._frameTimeHistory = [];
     },
 
-    registerFrameTime: function(lastFrameLength)
-    {
-        this._frameTimeHistory.push(lastFrameLength);
-    },
-
-    intervalHasConcluded: function(timestamp)
-    {
-        if (!Controller.prototype.intervalHasConcluded.call(this, timestamp))
-            return false;
-
-        return this._finishedTierSampling || this.filterOutOutliers(this._frameTimeHistory).length > this.numberOfFramesRequiredInInterval;
-    },
-
     didFinishInterval: function(timestamp, stage, intervalAverageFrameLength)
     {
-        this._frameTimeHistory = [];
         if (!this._finishedTierSampling) {
             if (this._tierStartTimestamp > 0 && timestamp < this._tierStartTimestamp + this.tierFastTestLength)
                 return;

Modified: branches/safari-611-branch/Tools/ChangeLog (273537 => 273538)


--- branches/safari-611-branch/Tools/ChangeLog	2021-02-26 02:52:05 UTC (rev 273537)
+++ branches/safari-611-branch/Tools/ChangeLog	2021-02-26 03:40:15 UTC (rev 273538)
@@ -1,3 +1,23 @@
+    2021-02-25  Myles C. Maxfield  <[email protected]>
+
+            Unreviewed, reverting r273390 and r273391.
+            https://bugs.webkit.org/show_bug.cgi?id=222449
+
+            Didn't fix the extreme test variance, and caused some internal
+            performance bots to hang during testing
+
+            Reverted changesets:
+
+            "MotionMark scores are super sensitive to a single long frame"
+            https://bugs.webkit.org/show_bug.cgi?id=220847
+            https://trac.webkit.org/changeset/273390
+
+            "MotionMark scores are super sensitive to a single long frame"
+            https://bugs.webkit.org/show_bug.cgi?id=220847
+            https://trac.webkit.org/changeset/273391
+
+            * Scripts/webkitpy/benchmark_runner/data/plans/motionmark1.1.plan:
+
 2021-02-25  Russell Epstein  <[email protected]>
 
         Cherry-pick r273314. rdar://problem/74753323

Modified: branches/safari-611-branch/Tools/Scripts/webkitpy/benchmark_runner/data/plans/motionmark1.1.plan (273537 => 273538)


--- branches/safari-611-branch/Tools/Scripts/webkitpy/benchmark_runner/data/plans/motionmark1.1.plan	2021-02-26 02:52:05 UTC (rev 273537)
+++ branches/safari-611-branch/Tools/Scripts/webkitpy/benchmark_runner/data/plans/motionmark1.1.plan	2021-02-26 03:40:15 UTC (rev 273538)
@@ -1,7 +1,7 @@
 {
     "timeout": 1800,
     "count": 1,
-    "svn_source": "https://svn.webkit.org/repository/webkit/trunk/PerformanceTests/MotionMark/@r273122",
+    "svn_source": "https://svn.webkit.org/repository/webkit/trunk/PerformanceTests/MotionMark/@r270959",
     "webserver_benchmark_patch": "data/patches/webserver/MotionMark.patch",
     "webdriver_benchmark_patch": "data/patches/webdriver/MotionMark.patch",
     "entry_point": "index.html",
_______________________________________________
webkit-changes mailing list
[email protected]
https://lists.webkit.org/mailman/listinfo/webkit-changes

Reply via email to