Re: Linux 2.6.6 appears to be 3 to 4 times slower than 2.6.5.

[Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>]

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.