Open Bug 1861945 Opened 2 years ago Updated 2 years ago

After a speedometer 2 benchmark roughly half of explicit memory is malloc overhead

Categories

(Core :: Memory Allocator, enhancement)

Product:
Core
Component:
Memory Allocator
Platform:
x86_64
Linux
Type:
enhancement

Tracking

()

People

(Reporter: pbone, Unassigned)

References

(Depends on 1 open bug)

Details

I ran a speedometer 2 benchmark and then opened a memory report. heap-overhead was at the top of the list at just over half of the memory usage. with fragmentation of small bins (bin-unused) being the majority.

43.18 MB (100.0%) -- explicit
├──21.94 MB (50.81%) -- heap-overhead
│ ├──15.54 MB (35.99%) ++ bin-unused

Given that we seem to leak memory during the run (bug 1842074), that doesn't seem surprising to me.

Depends on: 1842074

Did you wait for GC/CC to run (and then stop running)?

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