Re: How to limit an IO bound process?
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Gilles Mocellin wrote:
> Le samedi 21 avril 2007 21:21, Sven Arvidsson a écrit :
>> There's ionice from the schedutils package, but I don't know how well it
>> works.
>
> I use it for my hourly backup with rsnapshot.
> Before I do that, I was really annoyed by the backup, now, I'm not anymore.
>
> I combine ionice and nice, I don't know if it's usefull, but I really want my
> backup to be quite.
>
> gilles@guitare:~$ cat /etc/cron.d/rsnapshot
> 9 * * * * root mount /sauvegarde > /dev/null 2>&1
> 10 * * * * root ionice -c3 nice -n19 /usr/bin/rsnapshot horaire
> 20 23 * * * root ionice -c3 nice -n19 /usr/bin/rsnapshot quotidien
> 21 23 * * 0 root ionice -c3 nice -n19 /usr/bin/rsnapshot
> hebdomadaire
> 22 23 1 * * root ionice -c3 nice -n19 /usr/bin/rsnapshot mensuel
I think that is exactly what I want. I read the document and it said
that non-root user cannot set class 3 for `ionice`. So I use class 2,
data 7. The following is the script that I just wrote. I will see how
the program runs. Thanks very much to you two. :)
$ cat bin/mylprun.sh
#!/bin/sh
nice -n19 ionice -c2 -n7 $1
- --
Cheers,
Wei Chen
http://www.acplex.com/people/wchen/
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