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SubjectRe: 2.4.9-ac15 painfully sluggish
On Tue, 25 Sep 2001, Pau Aliagas wrote:
> On Tue, 25 Sep 2001, Rik van Riel wrote:
>
> > Could you send me one screen's worth of output from top
> > and 5 lines from 'vmstat -a 5' ?

> [pau@pau pau]$ vmstat -n 5
> procs memory swap io system cpu
> r b w swpd free buff cache si so bi bo in cs us sy id
> 2 6 1 2392 3040 476 9644 5 7 585 17 170 479 85 6 9
> 2 12 0 2520 2800 408 9028 25 27 1425 35 208 184 92 6 2
> 2 4 0 2596 2812 408 9500 15 22 1174 24 204 304 79 6 16

Wow, these are a LOT of reads and a very small cache.

I guess the old page_launder() might be misbehaving in
this case, I've just finished the patch for a new one
(which seems to work nicely in the limited tests I've
thrown at it).

> 6:58pm up 14 min, 5 users, load average: 7,68, 6,21, 3,22
> 112 processes: 110 sleeping, 2 running, 0 zombie, 0 stopped
> CPU states: 2,7% user, 5,2% system, 92,0% nice, 0,0% idle
> Mem: 127072K av, 124272K used, 2800K free, 564K shrd, 440K buff
> Swap: 401536K av, 2132K used, 399404K free 9368K cached

Here things get "interesting" ...

total memory: 127 MB
The memory taken by all your processes: 55 MB
buffer + cache: 10 MB
-----------------------------------------------------
missing: 62 MB

It would be interesting to get a listing of /proc/slabinfo,
in particular those lines which have a large number in the
4th or 5th column...


regards,

Rik
--
IA64: a worthy successor to the i860.

http://www.surriel.com/
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