Date: Wed, 8 Apr 2015 22:59:19 +0200 From: Paul Schutte <sjpschutte@...il.com> To: musl@...ts.openwall.com Cc: John Mudd <johnbmudd@...il.com> Subject: Re: musl perf, 20% slower than native build? Hi Daniel, Pardon my stupidity, but with what did you replace the memcpy ? Regards Paul On Wed, Apr 8, 2015 at 9:28 PM, Daniel Cegiełka <daniel.cegielka@...il.com> wrote: > 2015-04-08 21:10 GMT+02:00 John Mudd <johnbmudd@...il.com>: > > > Here's output from perf record/report for libc. This looks consistent > with > > the 5% longer run time. > > > > native: > > 2.20% python libc-2.19.so [.] __memcpy_ssse3 > > > > > musl: > > 4.74% python libc.so [.] memcpy > > I was able to get twice speed-up (in my code) just by replacing memcpy > in the musl. > > Daniel > Content of type "text/html" skipped
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