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1b2febb9
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2021-08-23T12:39:16
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Trace Tests: Refactor calibration logic.
Instead of calling glFinish every step we now run a few warmup loops
to try and figure out the right step interval. On each run we refine
the step interval until we reach a number that completes in the
specific time after a single glFinish call. This method will use the
specified test time much more consistenty.
Also a couple other improvements. Will use more test time on the bots
because previously they were using a calibration/warmup time of 1
second per run loop, and this bumps it up to 3 per run loop.
Long explanation below.
What we did before:
step()
glFinish()
step()
glFinish()
.. repeat for "gCalibrationTime" seconds
then take the number of steps, the actual time ran, and compute an
estimate for "mStepsToRun".
When we run for real, we go:
step()
step()
step()
.. repeat for "mStepsToRun" steps.
glFinish()
this has an obvious performance difference, because after each step()
(one frame in a trace) you had a complete stall.
The new code first does the above to compute a tentative mStepsToRun,
then uses the results of the second run to compute a much more accurate
mStepsToRun by using the "actual" time it took to run the estimate.
Bug: angleproject:6090
Change-Id: I0ff19873580e13f2af5a145a21f5b1c59fb15795
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3114606
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Tim Van Patten <timvp@google.com>
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130a8b63
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2021-08-16T17:09:10
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Perf Runner: Properly merge histograms.
The prior method was emitting 5 histograms per test. The new script
method merges the 5 histogram samples together and recomputes the
running statistics.
Should improve reporting on the dashboard.
Bug: angleproject:6090
Change-Id: I58a5e020f3a3257a8545df2785bc3eaa811ee38e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3096550
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
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d25c9d7f
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2021-07-07T12:15:12
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Add perf tests runner script.
This script will be responsible for running the perf tests
multiple times to try and stabilize measurements. We'll use it on
the bots instead of just running the perf tests directly.
Because the script invokes the binary multiple times, this slows
down execution. Most significantly on Android, where we now need
to use 20 shards, up from 6.
Also marks one test as flaky on OpenGL.
Bug: angleproject:6090
Change-Id: I5280035cb0bdb290a68dc6961a384eaf4b40dd4b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3011422
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Cody Northrop <cnorthrop@google.com>
Reviewed-by: Tim Van Patten <timvp@google.com>
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