Re: VM test on 2.4.13-pre3aa1 (compared to 2.4.12-aa1 and 2.4.13-pre2aa1)

[Bill Davidsen]

In article <[e-mail]> [e-mail] wrote:
>On Wed, Oct 17, 2001 at 04:31:03AM +0200, Andrea Arcangeli wrote:
>> I noticed that anotehr thing that changed between vanilla 2.4.13pre2 and
>> 2.4.13pre3 is the setting of page_cluster on machine with lots of ram.
>> 
>> You'll now find the page_cluster set to 6, that means "1 << 6 << 12"
>> bytes will be paged in at each major fault, while previously only "1 <<
>> 4 << 12" bytes were paged in.
>> 
>> So I'd suggest to try again after "echo 4 > /proc/sys/vm/page-cluster"
>> to see if it makes any difference.
>> 
>> Andrea
>
>You Rule!
>
>The tweak to page-cluster is basically magic for this test.

Out of curiousity, did you play with the 'preempt' patch at all?

-- 
bill davidsen <[e-mail]>
  His first management concern is not solving the problem, but covering
his ass. If he lived in the middle ages he'd wear his codpiece backward.