Limiting max cpu usage per user (old Conectiva patch)

Limiting max cpu usage per user (old Conectiva patch)

[Frederik Dannemare]

Hi all,

do we have an effective way to limit max cpu usage per user? I haven't been 
able to find much useful info except for an old thread on lkml, where Rik 
van Riel mentions[1] a 2.2 kernel patch by Conectiva.

Anybody knows if this patch (or similar functionality) been ported to 2.4 
(or 2.5)?

[1]http://www.uwsg.iu.edu/hypermail/linux/kernel/0108.2/0362.html

--
Frederik

Re: Limiting max cpu usage per user (old Conectiva patch)

[Rik van Riel]

On Wed, 27 Nov 2002, Frederik Dannemare wrote:

> do we have an effective way to limit max cpu usage per user? I haven't been
> able to find much useful info except for an old thread on lkml, where Rik
> van Riel mentions[1] a 2.2 kernel patch by Conectiva.
>
> Anybody knows if this patch (or similar functionality) been ported to 2.4
> (or 2.5)?

It's on my patches page:

	http://surriel.com/patches/

cheers,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".
http://www.surriel.com/		http://guru.conectiva.com/
Current spamtrap:  <a href=mailto:"october@surriel.com">october@surriel.com</a>

Re: Limiting max cpu usage per user (old Conectiva patch)

[hugang]

On Wed, 27 Nov 2002 10:08:56 -0200 (BRST)
Rik van Riel <riel@conectiva.com.br> wrote:

>  It's on my patches page:
> 
>  	http://surriel.com/patches/
> 
>  cheers,
The patch is works. Here is the test.
w.c
-------
#include <stdio.h>
main()
{
while(1);
}

-------
start 5 w as normal user..
start 5 w as root user.

Enabel the fairsched 
echo 1 > /proc/sys/kernel/fairsched
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
  976 root      20   0   248  248   204 R    13.1  0.0   0:28 w
  974 root      20   0   248  248   204 R    12.9  0.0   0:28 w
  975 root      20   0   248  248   204 R    12.9  0.0   0:28 w
  973 root      17   0   248  248   204 R    12.5  0.0   0:29 w
  972 root      14   0   248  248   204 R    11.9  0.0   0:30 w
  968 hugang    20   0   252  252   208 R     7.1  0.0   0:18 w
  970 hugang    20   0   252  252   208 R     7.1  0.0   0:17 w
  967 hugang    20   0   252  252   208 R     5.9  0.0   0:19 w
  969 hugang    20   0   252  252   208 R     5.9  0.0   0:17 w
  966 hugang    14   0   252  252   208 R     5.9  0.0   0:20 w

Disabel the fairsched
echo 0 > /proc/sys/kernel/fairsched
  969 hugang    16   0   252  252   208 R     9.7  0.0   0:20 w
  970 hugang    16   0   252  252   208 R     9.7  0.0   0:19 w
  966 hugang    16   0   252  252   208 R     9.5  0.0   0:23 w
  974 root      16   0   248  248   204 R     9.5  0.0   0:32 w
  968 hugang    16   0   252  252   208 R     9.5  0.0   0:20 w
  975 root      16   0   248  248   204 R     9.5  0.0   0:32 w
  976 root      16   0   248  248   204 R     9.5  0.0   0:32 w
  972 root      16   0   248  248   204 R     9.5  0.0   0:34 w
  967 hugang    16   0   252  252   208 R     9.1  0.0   0:21 w
  973 root      16   0   248  248   204 R     8.9  0.0   0:33 w

-- 
		- Hu Gang

Re: Limiting max cpu usage per user (old Conectiva patch)

[Frederik Dannemare]

Rik van Riel wrote:
> On Wed, 27 Nov 2002, Frederik Dannemare wrote:
> 
>>do we have an effective way to limit max cpu usage per user? I haven't been
>>able to find much useful info except for an old thread on lkml, where Rik
>>van Riel mentions[1] a 2.2 kernel patch by Conectiva.
>>
>>Anybody knows if this patch (or similar functionality) been ported to 2.4
>>(or 2.5)?
> 
> It's on my patches page:
> 
> 	http://surriel.com/patches/
> 

Great. Many thanks. I'll go test it right away.

--
Frederik

Re: Limiting max cpu usage per user (old Conectiva patch)

[Martin Waitz]

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hi :)

On Wed, Nov 27, 2002 at 11:11:50AM +0100, Frederik Dannemare wrote:
> do we have an effective way to limit max cpu usage per user?

i'm working on a resource container implementation for linux
for my diploma thesis.

resource container provide a hierarchical way to account and
limit resources.
this way not only per user limits can be achieved, but any
policy you can think of (per service, per client, ...)

the work is due january, but interested people could have
a look at the (undocumented for now ;) source earlier.

-- 
CU,		  / Friedrich-Alexander University Erlangen, Germany
Martin Waitz	//  [Tali on IRCnet]  [tali.home.pages.de] _________
______________/// - - - - - - - - - - - - - - - - - - - - ///
dies ist eine manuell generierte mail, sie beinhaltet    //
tippfehler und ist auch ohne grossbuchstaben gueltig.   /
			    -
Wer bereit ist, grundlegende Freiheiten aufzugeben, um sich 
kurzfristige Sicherheit zu verschaffen, der hat weder Freiheit 
noch Sicherheit verdient.
			Benjamin Franklin  (1706 - 1790)

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Re: Limiting max cpu usage per user (old Conectiva patch)

[Marc-Christian Petersen]

Hi Frederik,

I can offer you a really nice small patch from Karol Golab. Find it here:

- http://www.tls-technologies.com/CPU/cpu-intro.html

works great for me.

ciao, Marc

Re: Limiting max cpu usage per user (old Conectiva patch)

[Frederik Dannemare]

Marc-Christian Petersen skrev:
> Hi Frederik,
> 
> I can offer you a really nice small patch from Karol Golab. Find it here:
> 
> - http://www.tls-technologies.com/CPU/cpu-intro.html
> 
> works great for me.

Thanks a lot. I'll check it out for sure.

--
Frederik