From: "Paolo Ciarrocchi" <ciarrocchi@linuxmail.org>
To: linux-kernel@vger.kernel.org
Cc: akpm@digeo.com
Subject: [BUG ? in 2.5.68] time and sleep...
Date: Thu, 01 May 2003 03:57:48 +0800 [thread overview]
Message-ID: <20030430195748.18712.qmail@linuxmail.org> (raw)
Hi all,
I dunno if what I'm reporting is a real problem or not...
I was playing with both the time and sleep command,
I wrote a simple script like the following
for i in `seq 1 1 600`;
do
time sleep 1
done;
Then I've run it in background and then I've run 'dbench 32'.
As soon as dbench finis its work I've killed the process in background.
The script was redirected to a file,
this is the result of a simple cat file.txt|grep elapsed|cut -d " " -f 3
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.16elapsed <-
0:02.84elapsed <-
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.48elapsed <-
0:04.86elapsed <-
0:01.00elapsed
0:01.02elapsed
0:01.02elapsed
0:01.00elapsed
0:01.02elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.01elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.01elapsed
0:01.00elapsed
0:01.00elapsed
0:01.01elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.03elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.02elapsed
0:01.01elapsed
0:01.00elapsed
0:01.55elapsed <-
0:01.02elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.02elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.06elapsed
0:01.02elapsed
0:01.00elapsed
0:01.04elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.19elapsed <-
0:01.00elapsed <-
0:02.46elapsed <-
0:01.27elapsed <-
0:01.03elapsed <-
0:01.07elapsed <-
0:08.20elapsed <-
0:02.88elapsed <-
0:09.24elapsed <-
0:01.00elapsed
0:05.11elapsed <-
0:07.08elapsed <-
0:10.69elapsed <-
0:03.06elapsed <-
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
0:01.00elapsed
[...]
So in a few cases sleep 1 seems to last for a few seconds.
Is it OK ?
Kernel is 2.5.68 preemption on.
Ciao,
Paolo
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next reply other threads:[~2003-04-30 19:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-30 19:57 Paolo Ciarrocchi [this message]
2003-04-30 21:10 ` [BUG ? in 2.5.68] time and sleep Andrew Morton
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