linux-kernel - Re: 2.6.24-rc8-rt1

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Message-ID: <478FA27A.9030507@grandegger.com>
Date:	Thu, 17 Jan 2008 19:46:18 +0100
From:	Wolfgang Grandegger <wg@...ndegger.com>
To:	Daniel Walker <dwalker@...sta.com>
CC:	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: 2.6.24-rc8-rt1

Daniel Walker wrote:
> On Thu, 2008-01-17 at 19:17 +0100, Wolfgang Grandegger wrote:
>> [    0.733248] TCP bind hash table entries: 2048 (order: 3, 57344
>> bytes)
>> [    0.741132] TCP: Hash tables configured (established 2048 bind
>> 2048)
>> [    0.747981] TCP reno registered
>> [    0.805896] krcupreemptd setsched 0
>> [    0.809657]   prio = 98
> 
> That's interesting .. You chould try running cyclictest at priority 99
> to eliminate other threads that might get involved (using -p99 instead
> of -p80 , I think) ..

I already tried that but I did not realize any difference. If I run
"while ls; do ls /bin; done" on the console I even get:

  #./cyclictest -n -p99 -i1000
  2.82 1.70 0.90 2/45 3168

  T: 0 ( 2426) P:99 I:1000 C: 135995 Min:     57 Act:  110 Avg:  106
Max:     911

Wolfgang.
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