Messages in this thread | | | Date | Thu, 13 Aug 2009 11:36:48 +0200 | From | Ingo Molnar <> | Subject | Re: [PROBLEM] perf report is broken in latest linus git |
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* Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> Latest Linus git kernel with -rc4 perf userspace: > > penberg@penberg-laptop:~/testing/jato$ perf record -f jato HelloWorldSwing > [ perf record: Captured and wrote 1.402 MB perf.data (~61261 samples) ] > > penberg@penberg-laptop:~/testing/jato$ perf report --sort comm,dso,symbol|head -30 > # Samples: 60457 > # > # Overhead Command Shared Object Symbol > # ........ ....... ....................................... ...... > # > > [ Note: the jato executable doesn't appear anywhere in the trace. I'm > pretty sure the libzip functions, for example, are from jato, not perf. ] > > 36.14% perf /home/penberg/bin/perf [.] dso__synthesize_plt_symbols > 35.20% perf /home/penberg/bin/perf [.] dso__new > 3.57% perf /home/penberg/bin/jato [.] 0x0000000000c910
Perhaps it's this commit:
4d1e00a: perf symbol: Fix symbol parsing in certain cases: use the build-id as a symlink
it does not revert cleanly, so you might want to check out these two commits:
4d1e00a 4d1e00a~1
and build perf on both, and check with your anomalous perf.data (without changing it) whether the output makes most sense.
Ingo
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