Re: anticipatory scheduling questions

["Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>]

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----- Original Message -----  
From: Andrew Morton <akpm@digeo.com>  
Date: Sun, 2 Mar 2003 12:43:58 -0800  
To: "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org>  
Subject: Re: anticipatory scheduling questions  
  
> "Felipe Alfaro Solana" <felipe_alfaro@linuxmail.org> wrote:  
> > Both 2.5.63 and 2.5.63-mm1 exhibit this behavior, but   
> > can't be reproduced with 2.4.20-2.54.   
>   
> By 2.54 I assume you mean 2.5.54?  
  
No, I meant Red Hat's kernel 2.4.20-54. It's based on 2.4.21-pre4  
with patches from Alan Cox, Arjan van den Ven and several  
other people from RedHat.  
  
> Your vmstat traces were showing tons of user time as well as system  
> time.  Please make sure that you have the latest version of procps,  
> from http://surriel.com/procps/ or http://procps.sourceforge.net/  
  
OK, I have downloaded procps 3.1.6 and have retested this on  
both 2.4.20-2.54 (2.4), 2.5.63 (stock) and 2.5.63-mm1. I have attached  
to this message "top -d1 -b" and "vmstat 1" command outputs, 
compressed with bzip2 to shorten the message length. I hope they 
will help in clarifying things a little. Both command were started up a 
while before clicking "Reply" and a few seconds after the message 
window opened up, just to let the system stabilize. 
  
> Well certainly the IO stream _looks_ like it is stuck in IO-wait a lot.  
>   
> It is strange that this has been happening for a couple of months and seems  
> to only affect Felipe Solana's copy of evolution.  I still can't get my copy  
> to spellcheck a thing.  I need to wrestle with it a bit more.  
  
A little bit more about my scenario: I'm running Red Hat Phoebe Beta 3  
(what will in fact turn 8.1) with glibc-2.3.1, Evolution 1.2.2, XFree86 4.3.0 
and KDE 3.1. I think Evolution has been compiled against glibc-2.3.1 and 
so it will be using NPTL. As for XFree86 and KDE, I compiled them myself 
and I'm sure they are using glibc-2.3.1 and NPTL. 
  
Please, dont' hesitate in contacting me for further investigations. 
Thanks! 
 
   Felipe Alfaro  
  
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