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[Bug libc/20425] unbalanced and poor utilization of memory in glibc arenas may cause memory bloat and subsequent OOM
- From: "sumeet.keswani at hpe dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Mon, 01 Aug 2016 09:02:58 +0000
- Subject: [Bug libc/20425] unbalanced and poor utilization of memory in glibc arenas may cause memory bloat and subsequent OOM
- Auto-submitted: auto-generated
- References: <email@example.com/bugzilla/>
--- Comment #3 from Sumeet Keswani <sumeet.keswani at hpe dot com> ---
The package contains the following files...
cc -Wall -g -pthread pthread_arena.c -o pthread_arena.exe
set the LD_LIBRARY PATH to the glibc you want and run with
LD_LIBRARY_PATH=./glibc-2.12.1-192 /pthread_arena.exe -iters 10 -stats
-threads 500 -maxSize 200
This will run the reproducer and write info to the stdout
The output generated in pthread_arena.exe.out is tabulated into
Here it shows that some arenas get 4 times the median number of allocations and
others get much less.
(In reply to Florian Weimer from comment #2)
> (In reply to Sumeet Keswani from comment #0)
> > Attached is the reproducer that contains the files needed to reproduce the
> > issue...
> The reproducer does not match the included .out file, and it is not clear
> how to reproduce the data you collected.
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