memory limit/quota per user

memory limit/quota per user

[Tharindu Rukshan Bamunuarachchi]

Hello All,

Is it possible to limit memory quota per user (like disk quota) in linux ?

AFAIK, RLIMIT_* (i.e. RSS, DATA) are applicable per process not per user.

thankx a lot.
tharindu.


"those that can, do. Those that can’t, complain." -- Linus
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Re: memory limit/quota per user

[Michal Nazarewicz]

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Tharindu Rukshan Bamunuarachchi <btharindu@gmail.com> writes:
> Is it possible to limit memory quota per user (like disk quota) in linux ?
>
> AFAIK, RLIMIT_* (i.e. RSS, DATA) are applicable per process not per user.

Unless something has changed recently, not with standard utilities.
Maybe SELinux or similar allows for something like that but otherwise
it's impossible.

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Re: memory limit/quota per user

[Tharindu Rukshan Bamunuarachchi]

but that is for lock memory per process, not per user ?


__
tharindu.info

"those that can, do. Those that can’t, complain." -- Linus



On Tue, Jun 8, 2010 at 1:20 PM, Ezra Taylor <ezra.taylor@gmail.com> wrote:
> Tharindu:
>
>                    Check out /etc/security/limits.conf.  The variable to
> modify or add is memlock.  You can set hard and soft limits on this.
> On Tue, Jun 8, 2010 at 6:32 AM, Tharindu Rukshan Bamunuarachchi
> <btharindu@gmail.com> wrote:
>>
>> Hello All,
>>
>> Is it possible to limit memory quota per user (like disk quota) in linux ?
>>
>> AFAIK, RLIMIT_* (i.e. RSS, DATA) are applicable per process not per user.
>>
>> thankx a lot.
>> tharindu.
>>
>>
>> "those that can, do. Those that can’t, complain." -- Linus
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
> --
> Ezra Taylor
>
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Re: memory limit/quota per user

[Alex Brandt]

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On Tuesday 08 June 2010 5:32:46 am Tharindu Rukshan Bamunuarachchi wrote:
> Hello All,
> 
> Is it possible to limit memory quota per user (like disk quota) in 
linux ?
> 
> AFAIK, RLIMIT_* (i.e. RSS, DATA) are applicable per process not per 
user.
> 
> thankx a lot.
> tharindu.
> 
> 
> "those that can, do. Those that can’t, complain." -- Linus
> --
> To unsubscribe from this list: send the line "unsubscribe linux-admin" 
in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

You can use the pam security limits feature.

Simply check that the module is being loaded in pam.d:

/etc/pam.d/system-auth:session          required        pam_limits.so 

Then use the /etc/security/limits.conf file:
<user> soft|hard memlock <value>

Regards,

Alex Brandt

-- 
Linux Administrator
http://www.alunduil.com

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Re: memory limit/quota per user

[Glynn Clements]

Alex Brandt wrote:

> > Is it possible to limit memory quota per user (like disk quota) in 
> linux ?
> > 
> > AFAIK, RLIMIT_* (i.e. RSS, DATA) are applicable per process not per 
> user.

> You can use the pam security limits feature.
> 
> Simply check that the module is being loaded in pam.d:
> 
> /etc/pam.d/system-auth:session          required        pam_limits.so 
> 
> Then use the /etc/security/limits.conf file:
> <user> soft|hard memlock <value>

Memory limits are per-process, not per-user (and "memlock" controls
the amount of memory which can be mlock()d, which has little bearing
on memory usage overall).

The only per-user resource limit is the total number of processes.

-- 
Glynn Clements <glynn@gclements.plus.com>