tree 9aefabe47f16556660129f638b50e398ce667dc3
parent 29705980bc915d45bea32209ab424cebc819dd29
author Kohsuke Yatoh <kyatoh@google.com> 1660096697 +0000
committer Kohsuke Yatoh <kyatoh@google.com> 1660608222 +0000

Preload font before TypefaceSerializationPerfTest.

This CL disables lazy font loading by preloading font in setUp(),
in order to stabilize testSerializeFontMap() results.

In testSerializeFontMap(), the first serializeFontMap() takes 20x time
due to lazy font loading (first call 40ms / avg 2ms on oriole).
This makes test results unstable by reducing the number of iterations.

ManualBenchmarkState calculates the number of iterations
('mMaxIterations') as follows:
    mMaxIterations = (int) (mTargetTestDurationNs / (warmupDuration / iterations));
where 'iterations' is the number of iterations done in warmup stage.
If the first iteration in warmup stage takes unusually long,
'iterations' becomes small and mMaxIterations will be smaller as well.

Bug: 239758440
Test: atest CorePerfTests:android.graphics.perftests.TypefaceSerializationPerfTest#testSerializeFontMap
Change-Id: I3181962a1807cb7b4ecbc8e26fe629b9f530e1c1