From: Charles Forsyth <forsyth@caldo.demon.co.uk>
To: 9fans@cse.psu.edu
Subject: [9fans] tuning aids
Date: Tue, 8 Apr 2003 23:57:44 +0100 [thread overview]
Message-ID: <98bfc3039b372f44ee7cc8e4ed402bf9@caldo.demon.co.uk> (raw)
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.
next reply other threads:[~2003-04-08 22:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-08 22:57 Charles Forsyth [this message]
2003-04-08 23:26 ` andrey mirtchovski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=98bfc3039b372f44ee7cc8e4ed402bf9@caldo.demon.co.uk \
--to=forsyth@caldo.demon.co.uk \
--cc=9fans@cse.psu.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).