Messages in this thread | | | Date | Tue, 10 Sep 2013 11:52:17 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 1/3] perf callchain: Convert children list to rbtree |
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On Tue, Sep 10, 2013 at 05:24:16PM +0900, Namhyung Kim wrote: > From: Namhyung Kim <namhyung.kim@lge.com> > > Current collapse stage has a scalability problem which can be > reproduced easily with parallel kernel build. This is because it > needs to traverse every children of callchain linearly during the > collapse/merge stage. Convert it to rbtree reduced the overhead > significantly. > > On my 400MB perf.data file which recorded with make -j32 kernel build:
nice!!!
tried on 2.6 GB data file from kernel make -j64 and got report speed up from 'never' to 2m52.756s ;-)
jirka
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