Memory regression diff-maxend-maxend-medianend-min flutter_gallery__back_button_memory

[kf6gpe]

See https://flutter-flutter-perf.skia.org/e/?begin=1602714272&end=1602741425&keys=X0394285421bc8feb15fab9583133b561&num_commits=50&request_type=1&xbaroffset=22015. Pretty clear signal.

Looks like commit #68148.

[gaaclarke]

That engine roll contains 3 commits: one affects the linter, one affects vulkan, the other affects android. The regressing test is running on android without vulkan which means the regression should have appeared in flutter/engine#21839. @iskakaushik is it expected that that commit should increase resident memory by ~10,000 KB?

[jason-simmons]

If I repeatedly suspend and resume Gallery and then run adb shell dumpsys meminfo I'm seeing the Native Heap metric increase by around 1MB on each cycle.

It looks like that started with flutter/engine#21839

[gaaclarke]

flutter/engine#21918 Landed, we'll wait until the numbers drop before we close this.