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Re: 1.3.1 *is* slower
- To: cygwin-developers at cygwin dot com
- Subject: Re: 1.3.1 *is* slower
- From: Earnie Boyd <earnie_boyd at yahoo dot com>
- Date: Mon, 07 May 2001 16:09:34 -0400
- References: <20010427160641.A11039@redhat.com> <3AF6E177.42A39A64@yahoo.com> <20010507154351.D29090@redhat.com>
- Reply-To: Cygwin Developers <cygwin-developers at cygwin dot com>
Christopher Faylor wrote:
>
> On Mon, May 07, 2001 at 01:55:03PM -0400, Earnie Boyd wrote:
> >Christopher Faylor wrote:
> >>
> >> It is true that 1.3.1 is slower than 1.1.8. I benchmarked it on my NT 2K
> >> dual processor 300MHZ system.
> >>
> >> A config.status --recheck in my gdb build directory takes a minute 1 second
> >> with 1.3.1, 52 seconds with 1.1.8, and 48 seconds with 1.1.5.
> >>
> >> Not a very encouraging trend.
> >>
> >> Anybody have any ideas? This is usually a sign of an extra disk open somewhere
> >> but I don't see anything obvious.
> >>
> >
> >Hey Chris, what do your timings give you now? Just curious if my
> >strrchr patch improved it.
>
> As I mentioned, I'm working on an asm version of strrchr to complement the asm version
> of strchr. The timings show something like a 5 - 6% improvement with the asm version.
> I haven't tried with the newlib version.
>
> I'm very glad that you found this bottleneck.
>
I've actually known about it for some months. I couldn't do anything
about it due to working environment restrictions. Now that has changed
and you'll probably see more patches from me.
Earnie.
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