resource provisioning

resource provisioning

[Phy Prabab]

Hello,

I would like to know if the linux kernel has a
mechanism to control computing resources at a uid
level, which I will call "resource provisioning".  For
example, I would like to define on a multi cpu machine
that a list of uid's can not consume more than 1 cpu
and no more than 1G RAM, irregardless or how many jobs
they launch on or to the system.

So I guess, is this the correct term and is there a
posibilitity to do this now?

I would like to avoid the virtual servers method as I
do not want to carve the machines in question into
more machines.

Thanks for the help!
Phy


	
		
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Re: resource provisioning

[Chris Wright]

* Phy Prabab (phyprabab@yahoo.com) wrote:
> I would like to know if the linux kernel has a
> mechanism to control computing resources at a uid
> level, which I will call "resource provisioning".  For
> example, I would like to define on a multi cpu machine
> that a list of uid's can not consume more than 1 cpu
> and no more than 1G RAM, irregardless or how many jobs
> they launch on or to the system.

You can already do this in some pretty crude fashion via rlimits and
sched_setaffinity (although the later doesn't have direct pam support
that I know of, so you'd have to manage that on your own).

> So I guess, is this the correct term and is there a
> posibilitity to do this now?

Otherwise, you must look at out of tree patches.  Linux-vserver does
this, CKRM will allow you resource control, and PAGG + other module
(perhaps job?) will give you this as well.

> I would like to avoid the virtual servers method as I
> do not want to carve the machines in question into
> more machines.

Note: the vserver method above doesn't create actual virtual machines,
more like a software construct that you could consider a resource domain.

thanks,
-chris
-- 
Linux Security Modules     http://lsm.immunix.org     http://lsm.bkbits.net

Re: resource provisioning

[Phy Prabab]

Thanks for the information Chris.  This is a good
starting point.

Phy
--- Chris Wright <chrisw@osdl.org> wrote:

> * Phy Prabab (phyprabab@yahoo.com) wrote:
> > I would like to know if the linux kernel has a
> > mechanism to control computing resources at a uid
> > level, which I will call "resource provisioning". 
> For
> > example, I would like to define on a multi cpu
> machine
> > that a list of uid's can not consume more than 1
> cpu
> > and no more than 1G RAM, irregardless or how many
> jobs
> > they launch on or to the system.
> 
> You can already do this in some pretty crude fashion
> via rlimits and
> sched_setaffinity (although the later doesn't have
> direct pam support
> that I know of, so you'd have to manage that on your
> own).
> 
> > So I guess, is this the correct term and is there
> a
> > posibilitity to do this now?
> 
> Otherwise, you must look at out of tree patches. 
> Linux-vserver does
> this, CKRM will allow you resource control, and PAGG
> + other module
> (perhaps job?) will give you this as well.
> 
> > I would like to avoid the virtual servers method
> as I
> > do not want to carve the machines in question into
> > more machines.
> 
> Note: the vserver method above doesn't create actual
> virtual machines,
> more like a software construct that you could
> consider a resource domain.
> 
> thanks,
> -chris
> -- 
> Linux Security Modules     http://lsm.immunix.org   
>  http://lsm.bkbits.net
> 



		
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resource provisioning

[Phy Prabab]

Hello,

Is there functionality within the kernel to supoort
"resource provisioning"?  As an example, on a muti cpu
machine I would like to limit every users' jobs to no
more than one cpu that they can access so that they
can not "consume" more than one cpu no matter how many
different jobs they launch on the machine. 

Thanks for the help!
Phy


	
		
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