Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- From: "Kip Macy" <kip.macy@xxxxxxxxx>
- Date: Tue, 16 Jan 2007 13:55:36 -0800
x86 pre-P4 had 32-byte cache lines. Thus older processors will not benefit.
-Kip
On 1/16/07, Nick Evans <nevans@xxxxxxxxxxxxx> wrote:
On Tue, 16 Jan 2007 17:51:03 +0100_______________________________________________
"Attilio Rao" <attilio@xxxxxxxxxxx> wrote:
> 2006/7/28, Attilio Rao <attilio@xxxxxxxxxxx>:
> >
> > After some thinking, I think it's better using init/fini methods
> > (since they hide the sizeof(struct turnstile) with size parameter).
> >
> > Feedbacks and comments are welcome:
> > http://users.gufi.org/~rookie/works/patches/uma_sync_init.diff
>
> [CC'ed all the interested people]
>
> Even if a long time is passed I did some benchmarks based on ebizzy tool.
> This program claims to reproduce a real httpd server behaviour and is
> used into the Linux world for benchmarks, AFAIK.
> I think that results of the comparison on this patch is very
> interesting, and I think it worths a commit :)
> I think that results can be even better on a Xeon machine (I had no
> chance to reproduce this on some of these).
> (Results taken in consideration have been measured after some starts,
> in order to minimize caching differences).
>
> The patch:
> http://users.gufi.org/~rookie/works/patches/ts-sq/ts-sq.diff
>
> The benchmark results:
> http://users.gufi.org/~rookie/works/patches/ts-sq/ts-sq.benchmark
>
> The kernel options file:
> http://users.gufi.org/~rookie/works/patches/ts-sq/CURRENT
>
> For any information, comment, etc. please feel free to contact me.
>
> Attilio
>
>
> --
> Peace can only be achieved by understanding - A. Einstein
> _______________________________________________
> freebsd-current@xxxxxxxxxxx mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-current
> To unsubscribe, send any mail to "freebsd-current-unsubscribe@xxxxxxxxxxx"
Some preliminary results:
PREEMPTION: 4BSD, Quad P3-Xeon, 2GB ram
pre-patch
1. 176.36 real 703.75 user 0.01 sys
2. 176.73 real 704.34 user 0.03 sys
3. 176.49 real 703.72 user 0.04 sys
4. 175.81 real 701.36 user 0.03 sys
5. 176.57 real 700.98 user 0.02 sys
post-patch
1. 179.17 real 714.39 user 0.01 sys
2. 178.33 real 711.50 user 0.04 sys
3. 178.32 real 711.04 user 0.03 sys
4. 177.34 real 707.51 user 0.03 sys
5. 178.25 real 710.17 user 0.03 sys
_______________________________________________
freebsd-current@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscribe@xxxxxxxxxxx"
freebsd-arch@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-arch
To unsubscribe, send any mail to "freebsd-arch-unsubscribe@xxxxxxxxxxx"
- Follow-Ups:
- Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- From: Mike Jakubik
- Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- References:
- Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- From: Attilio Rao
- Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- From: Nick Evans
- Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- Prev by Date: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- Next by Date: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- Previous by thread: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- Next by thread: Re: [PATCH] Mantaining turnstile aligned to 128 bytes in i386 CPUs
- Index(es):
Relevant Pages
|
|
