RSBAC performance in Linux 2.4.10

From: Pontus Lidman <pontus@lysator.liu.se>
Subject: RSBAC performance in Linux 2.4.10
Date: 13 Jan 2002 16:55:35 +0100

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Hello,

I'm running rsbac 1.1.2, and I'm quite happy with the results, except
for the performance problems. Reading the web pages, I got the
impression that the performance impact would be negligible, but I
noticed that many operations have become much slower. It is most
noticeable when updating the locate database using 'updatedb'.

I'm timing 'updatedb' on an old AMD K6-200, 96M of RAM, with 2
IDE-disks, DMA is turned off.

This is the result running Linux 2.4.10 without RSBAC:

h83:~# time updatedb

real    14m55.528s
user    0m11.730s
sys     0m17.350s

Compare to the result running Linux 2.4.10 with rsbac 1.1.2 patch:

h83:~# time updatedb
/usr/bin/find: /var/rsbac: Operation not permitted
/usr/bin/find: /usr/rsbac: Operation not permitted
/usr/bin/find: /home/rsbac: Operation not permitted
/usr/bin/find: /rsbac: Operation not permitted
/usr/bin/find: /reiser/rsbac: Operation not permitted

real    84m25.020s
user    0m18.350s
sys     70m19.230s

The difference is quite significant... is this consistent with others
experiences?

Regards,

Pontus

-- 
Pontus Lidman, pontus@lysator.liu.se, Software Engineer
No matter how cynical you get, it's impossible to keep up.
Scene: www.dc-s.com | MUD: tyme.envy.com 6969 | irc: irc.quakenet.eu.org
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