On Tue, Sep 10, 2013 at 05:24:16PM +0900, Namhyung Kim wrote: > From: Namhyung Kim <[email protected]> > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
