From: "Daniel Cegiełka" <daniel.cegielka@gmail.com>
To: musl@lists.openwall.com
Cc: John Mudd <johnbmudd@gmail.com>
Subject: Re: musl perf, 20% slower than native build?
Date: Wed, 8 Apr 2015 21:28:50 +0200 [thread overview]
Message-ID: <CAPLrYER6akShYLzjj9h6MmFYnPD--gsAy+8rwZx8P6Hv7ZdybA@mail.gmail.com> (raw)
In-Reply-To: <CAGDMk9EOFenPW2zWAMMkvD2+mV9PLu++mtaw5OVZ=6Q0gZRCLw@mail.gmail.com>
2015-04-08 21:10 GMT+02:00 John Mudd <johnbmudd@gmail.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
next prev parent reply other threads:[~2015-04-08 19:28 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-08 15:33 John Mudd
2015-04-08 15:58 ` Alexander Monakov
2015-04-08 16:05 ` Szabolcs Nagy
2015-04-08 19:10 ` John Mudd
2015-04-08 19:28 ` Daniel Cegiełka [this message]
2015-04-08 20:59 ` Paul Schutte
2015-04-09 6:50 ` Daniel Cegiełka
2015-04-09 17:28 ` Execinfo.h, backtrace is needed Jean-Marc Pigeon
2015-04-09 17:34 ` Rich Felker
2015-04-09 17:57 ` Alexander Monakov
2015-04-10 14:30 ` Jean-Marc Pigeon
2015-04-08 19:33 ` musl perf, 20% slower than native build? Alexander Monakov
2015-04-08 20:16 ` John Mudd
2015-04-08 20:24 ` John Mudd
2015-04-08 21:48 ` John Mudd
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAPLrYER6akShYLzjj9h6MmFYnPD--gsAy+8rwZx8P6Hv7ZdybA@mail.gmail.com \
--to=daniel.cegielka@gmail.com \
--cc=johnbmudd@gmail.com \
--cc=musl@lists.openwall.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/musl/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).