From: Willy Tarreau <w@1wt.eu>
To: Con Kolivas <kernel@kolivas.org>
Cc: ck@vds.kolivas.org, Michael Gerdau <mgd@technosis.de>,
Nick Piggin <npiggin@suse.de>,
Gene Heskett <gene.heskett@gmail.com>,
Al Boldi <a1426z@gawab.com>, Bill Huey <billh@gnuppy.monkey.org>,
Mike Galbraith <efault@gmx.de>,
linux kernel mailing list <linux-kernel@vger.kernel.org>,
William Lee Irwin III <wli@holomorphy.com>,
Peter Williams <pwil3058@bigpond.net.au>,
Matt Mackall <mpm@selenic.com>
Subject: Re: [ck] Re: [ANNOUNCE] Staircase Deadline cpu scheduler version 0.45
Date: Sun, 22 Apr 2007 15:07:25 +0200 [thread overview]
Message-ID: <20070422130725.GA16601@1wt.eu> (raw)
In-Reply-To: <200704222218.32754.kernel@kolivas.org>
On Sun, Apr 22, 2007 at 10:18:32PM +1000, Con Kolivas wrote:
> On Sunday 22 April 2007 21:42, Con Kolivas wrote:
>
> Willy I'm still investigating the idle time and fluctuating load as a separate
> issue.
OK.
> Is it possible the multiple ocbench processes are naturally
> synchronising and desynchronising and choosing to sleep and/or run at the
> same time?
I don't think so. They're independant processes, and I insist on reducing
their X work in order to ensure they don't get perturbated by external
factor. Their work consist in looping 250 ms and waiting 750 ms, then
displaying a new progress line.
> I can remove the idle time entirely by running ocbench at nice 19
> which means they are all forced to run at basically the same time by the
> scheduler.
It may indicate some special handling of nice ?
> Anyway the more important part is... Can you test this patch please? Dump
> all the other patches I sent you post 045. Michael, if you could test too
> please?
OK, I will restart from fresh 0.45 and try again.
Regards,
Willy
next prev parent reply other threads:[~2007-04-22 13:09 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-22 4:41 [ANNOUNCE] Staircase Deadline cpu scheduler version 0.45 Con Kolivas
2007-04-22 7:00 ` Willy Tarreau
2007-04-22 7:27 ` Con Kolivas
2007-04-22 7:31 ` Con Kolivas
2007-04-22 8:06 ` Willy Tarreau
2007-04-22 8:53 ` Con Kolivas
2007-04-22 9:14 ` Willy Tarreau
2007-04-22 9:53 ` Con Kolivas
2007-04-22 11:42 ` Con Kolivas
2007-04-22 12:18 ` [ck] " Con Kolivas
2007-04-22 13:07 ` Willy Tarreau [this message]
2007-04-22 13:27 ` Con Kolivas
2007-04-22 14:22 ` Willy Tarreau
2007-04-22 14:35 ` Con Kolivas
2007-04-23 7:02 ` Con Kolivas
2007-04-22 14:27 ` Michael Gerdau
2007-04-22 14:37 ` Con Kolivas
2007-04-22 8:02 ` [ck] " Michael Gerdau
2007-04-22 11:09 ` Con Kolivas
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