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Re: Kernel 2.6.5-1.358smp



Hi,
It will help if you tell us what is this program doing.

May be in Fedora this program runs faster and ends its task using less time 
than RH system, of course, at the cost of more CPU cycles ;-)

Greetings.


El Jueves, 17 de Junio de 2004 17:45, raffaele ronchi libero it escribió:
> Hello all,
> I have installed Fedora Core2 (Kernel 2.6.5-1.358smp) on a system with Xeon
> MP processors. I ran the same program (multithreaded) on this system and
> compared the results Vs. what obtained on the same hardware running RH
> Advanced Server 3.0 (Kernel 2.4.21-9.ELsmp).
>
> Follows sar output:
>
> Linux 2.4.21-9.ELsmp (RH system) 	06/17/2004
>
> 05:00:00 PM       CPU     %user     %nice   %system     %idle
> 05:02:42 PM       all      3.82      0.00      1.20     94.98
> 05:02:47 PM       all      3.36      0.00      1.45     95.19
> 05:02:52 PM       all      3.26      0.00      1.40     95.34
> 05:02:57 PM       all      3.01      0.00      1.20     95.79
> 05:03:02 PM       all      3.51      0.00      1.60     94.88
> 05:03:07 PM       all      3.11      0.00      1.76     95.13
> 05:03:12 PM       all      3.30      0.00      1.55     95.15
>
> ---------------------------------------------------------------------------
>------------ Linux 2.6.5-1.358smp (Fedora Core2 system) 	06/17/2004
>
> 04:32:52 PM       CPU     %user     %nice   %system   %iowait     %idle
> 04:35:26 PM       all      5.05      0.00      6.85      0.20     87.89
> 04:35:31 PM       all      5.00      0.00      6.70      0.10     88.21
> 04:35:36 PM       all      4.70      0.00      7.10      0.20     88.01
> 04:35:41 PM       all      4.90      0.00      6.75      0.20     88.16
> 04:35:46 PM       all      5.10      0.00      6.50      0.15     88.24
> 04:35:51 PM       all      4.75      0.00      6.95      0.20     88.10
> 04:35:56 PM       all      5.74      0.00      8.04      0.20     86.01
>
> Both system time and user time are much higher on Fedora.
> Is it something you have already seen happening, or might just be related
> to kernel configuration ?
>
> Thanks to everybody will reply. In case I can provide more
> details/mesurements. One interesting thing is that the program is running
> even slower on Fedora.
>
> Regards
>
> Raffaele

-- 
Saludos.
---
Carles Xavier Munyoz Baldó
carles unlimitedmail org
http://www.unlimitedmail.net/
---



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