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Set AGGRESSIVE_FREE_AFTER_REGEX_MATCH

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This is to workaround a regression on peak memory usage, due to a
behavior change of pcre2. With this patch, peak memory usage decreases
for about 4 MB.

Also verified with microdroid benchmarks that the runtime impact is
negligible.

Before this patch:

testMicrodroidBootTime[protectedVm=false]:
    avf_perf/microdroid/boot_time_average_ms: 1072.2437260666668
    avf_perf/microdroid/boot_time_max_ms: 1153.957195
    avf_perf/microdroid/boot_time_min_ms: 987.760254
    avf_perf/microdroid/boot_time_stdev_ms: 43.715968392943445
testMicrodroidBootTime[protectedVm=true]:
    avf_perf/microdroid/boot_time_average_ms: 1318.7790113333335
    avf_perf/microdroid/boot_time_max_ms: 1367.490967
    avf_perf/microdroid/boot_time_min_ms: 1239.080486
    avf_perf/microdroid/boot_time_stdev_ms: 33.82832311810135

After this patch:

testMicrodroidBootTime[protectedVm=false]:
    avf_perf/microdroid/boot_time_average_ms: 1074.9152321333336
    avf_perf/microdroid/boot_time_max_ms: 1172.233481
    avf_perf/microdroid/boot_time_min_ms: 971.020793
    avf_perf/microdroid/boot_time_stdev_ms: 45.3782260524823
testMicrodroidBootTime[protectedVm=true]:
    avf_perf/microdroid/boot_time_average_ms: 1286.4607849333333
    avf_perf/microdroid/boot_time_max_ms: 1380.643678
    avf_perf/microdroid/boot_time_min_ms: 1209.573649
    avf_perf/microdroid/boot_time_stdev_ms: 44.44544241596637

Bug: 262469329
Test: atest MicrodroidBenchmarks
Test: run device boot time test
Change-Id: Ifc1be381255c263638ea262b995bc06fa3c7bdcc
This commit is contained in:
Inseob Kim 2023-01-19 10:21:29 +09:00
parent ad990cb28b
commit 6ffce0a0e3
1 changed files with 1 additions and 0 deletions
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1
libselinux/Android.bp
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@ -40,6 +40,7 @@ common_CFLAGS = [
"-DNO_MEDIA_BACKEND",
"-DNO_X_BACKEND",
"-DNO_DB_BACKEND",
"-DAGGRESSIVE_FREE_AFTER_REGEX_MATCH",
"-Wall",
"-Werror",
"-Wno-error=missing-noreturn",