Messages in this thread | | | Date | Mon, 14 Mar 2011 20:27:59 -0400 (EDT) | From | Vince Weaver <> | Subject | Re: perf: kernel memory leak when inherit enabled |
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On Mon, 14 Mar 2011, Arnaldo Carvalho de Melo wrote:
> Em Mon, Mar 14, 2011 at 06:27:19PM -0400, Vince Weaver escreveu: > > On Fri, 11 Mar 2011, Vince Weaver wrote: > > > > > > While trying to use perf events with inherit enabled to profile some > > > multi-threaded BLAS routines (using PAPI) I ended up out-of-memorying my > > > machine. It turns out you can quickly leak gigabytes of kernel memory > > > that isn't freed when the process exits. > > > > I've bisected this. There's a whole day I'll never see again. binutils > > 2.21 and gcc-4.5 for the lose :( > > > > Anyway this memory leak with inherit was introduced in > > 4fd38e4595e > > > commit 4fd38e4595e2f6c9d27732c042a0e16b2753049c > Author: Peter Zijlstra <a.p.zijlstra@chello.nl> > Date: Thu May 6 17:31:38 2010 +0200 > > perf: Fix exit() vs PERF_FORMAT_GROUP
This changeset was reverted already in e3174cfd2a1e28fff774681f00a0eef3d31da970 yet somehow that didn't fix the inherit mem-leak.
Vince vweaver1@eecs.utk.edu
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