* [9fans] tuning aids
@ 2003-04-08 22:57 Charles Forsyth
2003-04-08 23:26 ` andrey mirtchovski
0 siblings, 1 reply; 2+ messages in thread
From: Charles Forsyth @ 2003-04-08 22:57 UTC (permalink / raw)
To: 9fans
it's easy to forget iostats(4), tprof and prof -d (see prof(1)).
i was working on some imported software that was claimed
to be lean, clean and mean but in simple tests
had amazingly appalling performance.
thanks to the above i quickly found and fixed enough that
it works sensibly. iostats was particularly useful.
it was reading 800 Mbytes by pointlessly rereading
800 kbytes, and had a bizarre buffer bounds test when
writing that negated the buffering.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [9fans] tuning aids
2003-04-08 22:57 [9fans] tuning aids Charles Forsyth
@ 2003-04-08 23:26 ` andrey mirtchovski
0 siblings, 0 replies; 2+ messages in thread
From: andrey mirtchovski @ 2003-04-08 23:26 UTC (permalink / raw)
To: 9fans
On Tue, 8 Apr 2003, Charles Forsyth wrote:
> it's easy to forget iostats(4), tprof and prof -d (see prof(1)).
>
iostats is great! it automagically fixed the crazy tcp problem we once had
-- all we had to do is run iostats before netpipe and the problem would
dissapear with an insignificant increase in completion time :)
https://lists.cse.psu.edu/archives/9fans/2002-May/017658.html
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2003-04-08 23:26 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-04-08 22:57 [9fans] tuning aids Charles Forsyth
2003-04-08 23:26 ` andrey mirtchovski
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).