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

[Justin Piszcz]

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.

> From: Duncan Sands <baldrick@xxxxxxx>
> To: gene.heskett@xxxxxxxxxxx, "Justin Piszcz" <jpiszcz@xxxxxxxxxxx>
> CC: linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: Linux 2.6.6 appears to be 3 to 4 times slower than 2.6.5.
> Date: Mon, 17 May 2004 10:07:17 +0200
>
> > I noted that my epson C82 usb printer was running about 25% of its
> > normal speed last night, it took gimp-print several hours to do half
> > a dozen 8x10's in 720dpi.  gkrellm's display looks normal though,
> > with setiathome currently taking 90+% of the cpu, which is normal.
>
> 2.6.6 or 2.6.6 plus patches from BK or -mm?
>
> Thanks,
>
> Duncan.

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