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[Impeller] match Skia's old VMA default block size. #56368

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Nov 5, 2024

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@jonahwilliams jonahwilliams commented Nov 5, 2024

The unspecified default is 256 MiB which is ... big. 4Mb value is the default that Skia used to use, and results in less memory usage at least in local testing.

benchmarks will determine if this has a positive or negative impact on performance.

flutter/flutter#157497

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It looks like this pull request may not have tests. Please make sure to add tests before merging. If you need an exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!).

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.

@jonahwilliams jonahwilliams added the autosubmit Merge PR when tree becomes green via auto submit App label Nov 5, 2024
@auto-submit auto-submit bot merged commit a13a492 into flutter:main Nov 5, 2024
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Nov 5, 2024
@jonahwilliams jonahwilliams deleted the adjust_block_size_android branch November 5, 2024 23:22
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Nov 5, 2024
auto-submit bot pushed a commit to flutter/flutter that referenced this pull request Nov 6, 2024
…158218)

flutter/engine@e5e06c9...a3741d6

2024-11-05 [email protected] Increase timeouts for Linux Fuchsia and Linux Web Framework Tests builders (flutter/engine#56387)
2024-11-05 [email protected] iOS: Use standard Obj-C cflags for ios_test_flutter (flutter/engine#56384)
2024-11-05 [email protected] Remove unnecessary method for getting engine switches (command line). (flutter/engine#56265)
2024-11-05 [email protected] Remove FlScrollingViewDelegate (flutter/engine#56270)
2024-11-05 [email protected] fml: delete scoped_nsobject.h,mm (flutter/engine#56382)
2024-11-05 [email protected] Roll Skia from b3be9cb59fe8 to 82175b411c80 (2 revisions) (flutter/engine#56383)
2024-11-05 [email protected] [Impeller] Delete any remaining GL objects during destruction of the ReactorGLES (flutter/engine#56361)
2024-11-05 [email protected] [web] Switch all fonts to WOFF2 (non-split) (flutter/engine#56035)
2024-11-05 [email protected] [Impeller] exploit content context options' perfect hash function. (flutter/engine#56360)
2024-11-05 [email protected] Roll Skia from 7989f782dbf4 to b3be9cb59fe8 (6 revisions) (flutter/engine#56380)
2024-11-05 [email protected] Roll Dart SDK from b39c729740eb to 3e840340c412 (1 revision) (flutter/engine#56377)
2024-11-05 [email protected] [Impeller] match Skia's old VMA default block size. (flutter/engine#56368)
2024-11-05 [email protected] iOS: Refactor ShellTestPlatformViewMetal (flutter/engine#56370)
2024-11-05 [email protected] Roll Fuchsia Linux SDK from amgHXcqtplha8LuI_... to z1otZzn3yKuGnu1st... (flutter/engine#56374)

Also rolling transitive DEPS:
  fuchsia/sdk/core/linux-amd64 from amgHXcqtplha to z1otZzn3yKuG

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/flutter-engine-flutter-autoroll
Please CC [email protected],[email protected] on the revert to ensure that a human
is aware of the problem.

To file a bug in Flutter: https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
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