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Re: [patch, mips] Improved memset for MIPS
- From: Steve Ellcey <sellcey at mips dot com>
- To: Carlos O'Donell <carlos at redhat dot com>
- Cc: <libc-ports at sourceware dot org>
- Date: Fri, 6 Sep 2013 09:03:23 -0700
- Subject: Re: [patch, mips] Improved memset for MIPS
- Authentication-results: sourceware.org; auth=none
- References: <93a232b5-9d0b-4a27-bbb5-16e3ae7c4b89 at BAMAIL02 dot ba dot imgtec dot org> <522957A4 dot 2030400 at redhat dot com>
On Fri, 2013-09-06 at 00:18 -0400, Carlos O'Donell wrote:
> Two things really:
> (a) Testing details?
> Could you please elaborate more on "some standalone performance
> What specific benchmarks did you run?
Basically, I just wrote and used a test program that does a bunch of
memset's. Nothing fancy or very intricate.
> What does the glibc microbenchmark show about your changes? Do they
> show a benefit?
I didn't try this, but I can. Is there anything on the glibc web page
about how to run this benchmark? Does it happen as part of the standard
> Steve, I trust your experience with MIPS, but I'd like to see all
> of us drive a little more detail into these performance related
> patches. I'm also curious if the microbenchmark shows a performance
> progression. The glibc community is trying hard to add some objectivity
> to our performance measurements, prevent performance regressions, and
> use the tests to experiment with new implementations.
That sounds reasonable. I just need a bit of help on where this is and
how to run it.
> (b) the code formatting isn't in line with the project requirements.
I'll fix these up and resubmit when I have the changes (and some more