Messages in this thread |  | | | Date | Mon, 14 Mar 2011 22:26:17 -0400 (EDT) | | From | Vince Weaver <> | | Subject | Re: perf: kernel memory leak when inherit enabled |
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On Mon, 14 Mar 2011, Vince Weaver wrote:
> 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 > > This changeset was reverted already in > e3174cfd2a1e28fff774681f00a0eef3d31da970 > yet somehow that didn't fix the inherit mem-leak.
I see, a new fix was made immediately after the revert, 050735b08ca8a016bbace4445fa025b88fee770b which probably immediately re-introduced the problem, which is why git bisect didn't catch this. I'm away from my test machine so I'll have to wait until tomorrow before I can investigate more.
Vince vweaver1@eecs.utk.edu
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