Messages in this thread | | | Date | Wed, 18 Sep 2013 12:58:55 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 0/4] perf tools: New comm infrastructure |
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Em Wed, Sep 18, 2013 at 12:12:53PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Wed, Sep 18, 2013 at 11:20:38AM -0300, Arnaldo Carvalho de Melo escreveu: > > Em Tue, Sep 17, 2013 at 02:54:22PM +0900, Namhyung Kim escreveu: > > > On Sat, 14 Sep 2013 08:11:49 +0200, Ingo Molnar wrote: > > > > Well, it was the 100,000+ step linear list walk that was causing 90% of > > > > the slowness here. Namhyung's patch should dramatically improve that. I > > > > guess time for someone to post a combined tree so that it can be tested > > > > all together?
> Cherry picking just: > > perf callchain: Convert children list to rbtree > > I go from too-long-to-wait to: > > [root@sandy ~]# echo performance > /sys/devices/system/cpu/cpu3/cpufreq/scaling_governor > [acme@sandy linux]$ taskset -c 3 perf stat --null --sync --repeat 3 perf report -i perf.data.make-j8-kernel > /dev/null
> Performance counter stats for 'perf report -i perf.data.make-j8-kernel' (3 runs): > 79.158464654 seconds time elapsed ( +- 0.15% )
> [acme@sandy linux]$ > [acme@sandy linux]$ ls -lah perf.data.make-j8-kernel > -rw-------. 1 acme acme 2.3G Sep 16 11:56 perf.data.make-j8-kernel
And with the others, fixed up to cope with PERF_RECORD_MMAP2, except the progress bar updating:
[acme@sandy linux]$ taskset -c 3 perf stat --null --sync --repeat 3 perf report -i perf.data.make-j8-kernel > /dev/null
Performance counter stats for 'perf report -i perf.data.make-j8-kernel' (3 runs):
55.697701530 seconds time elapsed ( +- 0.13% )
[acme@sandy linux]$
Branch perf/callchain-v4 on my tree.
- Arnaldo
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