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From: Con Kolivas <kernel@kolivas.org>
To: Michael Buesch <mbuesch@freenet.de>
Cc: Willy Tarreau <willy@w.ods.org>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Staircase scheduler v7.4
Date: Sat, 26 Jun 2004 12:05:30 +1000	[thread overview]
Message-ID: <40DCD9EA.1030906@kolivas.org> (raw)
In-Reply-To: <200406252148.37606.mbuesch@freenet.de>

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Michael Buesch wrote:
| On Friday 25 June 2004 21:05, you wrote:
|
|>>Hi Michael,
|>>
|>>On Fri, Jun 25, 2004 at 08:44:22PM +0200, Michael Buesch wrote:
|>>
|>>
|>>>I don't know what the file wchan is good for, but here is
|>>>it's output:
|>>>mb@lfs:/proc/11000> cat wchan
|>>>sys_wait4
|>>
|>>I bet the process is waiting for a SIGCHLD from a previously forked
|>>process. Con, would it be possible that under some circumstances,
|>>a process does not receive a SIGCHLD anymore, eg if the child runs
|>>shorter than a full timeslice or something like that ? In autoconf
|>>scripts, there are lots of very short operations that might trigger
|>>such unique cases.
| But as the load grows, the system is usable as with load 0.0.
| And it really should be usable with 76.0% nice. ;) No problem here.
| This really high load is not correct.

I think you're right about having no timeslice.

It does appear that I fixed two things and introduced 2 more bugs. I'll
fix it in the next couple of days.

Con
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  parent reply	other threads:[~2004-06-26  2:05 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-25 16:40 [PATCH] Staircase scheduler v7.4 Michael Buesch
2004-06-25 16:46 ` Con Kolivas
2004-06-25 18:44   ` Michael Buesch
2004-06-25 19:05     ` Willy Tarreau
2004-06-25 19:48       ` Michael Buesch
2004-06-26  1:11         ` kernel
2004-06-26 16:33           ` Michael Buesch
2004-06-26 17:29           ` Michael Buesch
2004-06-27  9:14             ` Con Kolivas
2004-06-27 19:17             ` Felipe Alfaro Solana
2004-06-27 19:28               ` Michael Buesch
2004-06-27 21:55                 ` Felipe Alfaro Solana
2004-06-28  0:15                   ` Con Kolivas
2004-06-28  8:40                     ` Felipe Alfaro Solana
2004-06-28  8:49                       ` Nick Piggin
2004-06-28 11:53                         ` Felipe Alfaro Solana
2004-06-28 12:11                           ` Con Kolivas
2004-06-28 15:03                             ` Oswald Buddenhagen
2004-06-28 15:19                               ` Con Kolivas
2004-06-28 15:39                                 ` Oswald Buddenhagen
2004-06-28 17:11                             ` Felipe Alfaro Solana
2004-06-29  4:36                               ` Nick Piggin
2004-06-28 23:21                         ` Peter Williams
2004-06-29  4:44                           ` Nick Piggin
2004-06-29  6:01                             ` Ed Sweetman
2004-06-29  6:55                               ` Nick Piggin
2004-06-26  2:05         ` Con Kolivas [this message]
2004-06-27 10:24         ` Con Kolivas
2004-06-27 10:27           ` Con Kolivas
2004-06-27 23:50             ` Peter Williams
2004-06-27 12:00         ` Con Kolivas
2004-06-27 12:04           ` Con Kolivas
2004-06-27 12:54             ` Michael Buesch
2004-06-27 13:15               ` Con Kolivas
2004-06-25 16:46 ` Michael Buesch
  -- strict thread matches above, loose matches on Subject: below --
2004-06-25 14:38 Con Kolivas
2004-06-25 18:32 ` Matthias Urlichs
2004-06-26  1:28   ` Con Kolivas
2004-06-25 22:20 ` Willy Tarreau
2004-06-26  1:05   ` kernel
2004-06-26 20:04 ` Wes Janzen
2004-06-26 20:11   ` Michael Buesch
2004-06-26 21:14     ` Wes Janzen
2004-06-26 21:38       ` Prakash K. Cheemplavam
2004-06-27  9:16   ` Con Kolivas
2004-06-27 11:40     ` Grzegorz Kulewski

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