Re: 2.4.0-test7-vmpatch2 very sluggish on Toshiba laptop

From: Goblin (h0b_g0blin@yahoo.com)
Date: Wed Aug 30 2000 - 18:29:14 EST


On 08/30, Rik van Riel rearranged the electrons to read:
> On Wed, 30 Aug 2000, Goblin wrote:
>
> > I am running Mandrake 7.1, pretty much stock with all the updates. I
> > would like to know how I might go about determining why my system is
> > incredibly sluggish using new kernels. Stock Mandrake kernels run great.
> >
> > I guess I wanted to know if there was anyone else having the
> > same experience. Specifically, X is where I notice it the most.
> > Even Eterm takes forever to scroll a little. No disk activity.
>
> "No disk activity" indicates that it's probably not VM activity
> keeping you back...

Agreed. I have to think it's a coincidence I'm running vmpatch2.

> > All this is probably not enough info, so if anyone can help me at least
> > supply enough info to help solve my problem, I'd be in debt to them.
>
> If you run 'top' or 'vmstat', is there a big difference in output
> between what 2.2 and 2.4 tell you?

vmstat look the same, but here's some timings of bunzip'ing the kernel
source into a file (notice pagefaults and swaps):

This is under 2.2.16-9mdk:
31.50 user 1.17 system 0:34.68 elapsed 94%CPU
(0avgtext+0avgdata 0maxresident)k
0inputs+0outputs
(2413major+1571minor)pagefaults
402swaps

This is under 2.4.0-test7-vmpatch2b:
265.58 user 8.91 system 5:18.06 elapsed 86%CPU
(0avgtext+0avgdata 0maxresident)k
0inputs+0outputs
(100major+912minor)pagefaults
0swaps

 
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