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Date: Wed, 8 Apr 2015 21:28:50 +0200
From: Daniel Cegiełka <daniel.cegielka@...il.com>
To: musl@...ts.openwall.com
Cc: John Mudd <johnbmudd@...il.com>
Subject: Re: musl perf, 20% slower than native build?
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
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