e5a9947811
This implements a proof-of-concept sampling based heap profiler inspired by tcmalloc's heap profiler [1] and Go's mprof/memprofile [2]. The basic idea is the sample allocations using a randomized Poisson process. At any point in time we can cheaply request the set of live sample objects that should be a representative sample of heap. Samples include stack-traces from the allocation sites, making this an effective tool for memory leak debugging. Unlike AllocationTracking, this is intended to be cheap and usable online in production. The proof-of-concept is only sampling new-space allocations at this point. Support for sampling paged space and native allocations is anticipated in the future. [1] http://goog-perftools.sourceforge.net/doc/heap_profiler.html [2] http://blog.golang.org/profiling-go-programs Review URL: https://codereview.chromium.org/1555553002 Cr-Commit-Position: refs/heads/master@{#33448} |
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benchmarks | ||
cctest | ||
intl | ||
js-perf-test | ||
memory | ||
message | ||
mjsunit | ||
mozilla | ||
preparser | ||
promises-aplus | ||
simdjs | ||
test262 | ||
unittests | ||
webkit | ||
bot_default.gyp | ||
bot_default.isolate | ||
default.gyp | ||
default.isolate | ||
ignition.gyp | ||
ignition.isolate | ||
optimize_for_size.gyp | ||
optimize_for_size.isolate |