From: Andrew Morton <akpm@digeo.com>
To: Jens Axboe <axboe@suse.de>
Cc: Con Kolivas <conman@kolivas.net>,
linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [BENCHMARK] 2.5.44-mm6 contest results
Date: Mon, 28 Oct 2002 23:51:57 -0800 [thread overview]
Message-ID: <3DBE3E1D.F505D85B@digeo.com> (raw)
In-Reply-To: 20021029074025.GP2937@suse.de
Jens Axboe wrote:
>
> On Mon, Oct 28 2002, Andrew Morton wrote:
> > Con Kolivas wrote:
> > >
> > > io_load:
> > > Kernel [runs] Time CPU% Loads LCPU% Ratio
> > > 2.5.44 [3] 873.8 9 69 12 12.24
> > > 2.5.44-mm1 [3] 347.3 22 35 15 4.86
> > > 2.5.44-mm2 [3] 294.2 28 19 10 4.12
> > > 2.5.44-mm4 [3] 358.7 23 25 10 5.02
> > > 2.5.44-mm5 [4] 270.7 29 18 11 3.79
> > > 2.5.44-mm6 [3] 284.1 28 20 10 3.98
> >
> > Jens, I think I prefer fifo_batch=16. We do need to expose
> > these in /somewhere so people can fiddle with them.
>
> I was hoping someone else would do comprehensive disk benchmarks with
> fifo_batch=32 and fifo_batch=16, but I guess that you have to currently
> change the define in the source doesn't make that very likely. I don't
> really like your global settings (for per-queue entities), but I guess
> they can suffice until a better approach is done.
Oh sure; it's just a hack so we can experiment with it. Not that
anyone has, to my knowledge.
> I'll do some benching today.
Wouldn't hurt, but it's a complex problem. Another approach would
be to quietly change it and see who squeaks ;)
next prev parent reply other threads:[~2002-10-29 7:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-29 1:43 [BENCHMARK] 2.5.44-mm6 contest results Con Kolivas
2002-10-29 6:46 ` Andrew Morton
2002-10-29 7:40 ` Jens Axboe
2002-10-29 7:51 ` Andrew Morton [this message]
2002-10-29 8:22 ` Giuliano Pochini
2002-10-29 9:11 ` Con Kolivas
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