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SubjectRE: Linux 2.6.6 appears to be 3 to 4 times slower than 2.6.5.
Date
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It may not dause -data corruption- but it deleted a whole bunch of files
that were in use before the previous reboot.


-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Bartlomiej
Zolnierkiewicz
Sent: Tuesday, May 18, 2004 9:23 AM
To: Justin Piszcz; baldrick@free.fr; gene.heskett@verizon.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.6.6 appears to be 3 to 4 times slower than 2.6.5.

On Monday 17 of May 2004 17:06, Justin Piszcz wrote:
> Sorry to all, it turns out (in two separate cases I had two different
> problems that affected the results).
>
> Case 1: No SMP turned on for CPU w/HT after fix (~4.78 seconds compile
time
> (2.6GHZ w/HT))
> Case 2: Box had 4GB of NON-ECC memory in it, only recognized 2.56GB,
took
> out (2) 1GB DDR DIMM's, and the speed returned what it should be.
(~4.3
> seconds compile time (3.0GHZ w/HT))
>
> The control box was a 2.53GHZ (533MHZ BUS w/NO HT) = ~5.3seconds
>
> I have not tested 2.6.6 recently, but in one of my tests I believe it
> worked OK, ever since 2.6.6 removed my /etc/lilo.conf and /etc/mtab
and
> several other files, I do not wish to touch that kernel with a 10 foot
poll
> :-P due to the IDE disk flush/cache issue.

I told you this already: 2.6.6 IDE changes don't cause data corruption
- but fixes some instead (that's why there were merged so quickly!)
so stop spreading FUD and see
http://bugme.osdl.org/show_bug.cgi?id=2672.

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