linux-kernel - Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4) (added user memory)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 12 Sep 2006 17:43:23 -0700
From:	Rohit Seth <rohitseth@...gle.com>
To:	sekharan@...ibm.com
Cc:	vatsa@...ibm.com, Rik van Riel <riel@...hat.com>,
	CKRM-Tech <ckrm-tech@...ts.sourceforge.net>, balbir@...ibm.com,
	Dave Hansen <haveblue@...ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Christoph Hellwig <hch@...radead.org>,
	Andrey Savochkin <saw@...ru>, devel@...nvz.org,
	Matt Helsley <matthltc@...ibm.com>,
	Hugh Dickins <hugh@...itas.com>,
	Alexey Dobriyan <adobriyan@...l.ru>,
	Kirill Korotaev <dev@...ru>, Oleg Nesterov <oleg@...sign.ru>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Emelianov <xemul@...nvz.org>
Subject: Re: [ckrm-tech] [PATCH] BC: resource beancounters (v4)
	(added	user	memory)

On Tue, 2006-09-12 at 17:02 -0700, Chandra Seetharaman wrote:
> On Tue, 2006-09-12 at 10:22 -0700, Rohit Seth wrote:
> > On Tue, 2006-09-12 at 16:14 +0530, Srivatsa Vaddagiri wrote:
> > > On Mon, Sep 11, 2006 at 12:10:31PM -0700, Rohit Seth wrote:
> > > > It seems that a single notion of limit should suffice, and that limit
> > > > should more be treated as something beyond which that resource
> > > > consumption in the container will be throttled/not_allowed.
> > > 
> > > The big question is : are containers/RG allowed to use *upto* their
> > > limit always? In other words, will you typically setup limits such that
> > > sum of all limits = max resource capacity? 
> > > 
> > 
> > If a user is really interested in ensuring that all scheduled jobs (or
> > containers) get what they have asked for (guarantees) then making the
> > sum of all container limits equal to total system limit is the right
> > thing to do.
> > 
> > > If it is setup like that, then what you are considering as limit is
> > > actually guar no?
> > > 
> > Right.  And if we do it like this then it is up to sysadmin to configure
> > the thing right without adding additional logic in kernel.
> 
> It won't be a complete solution, as the user won't be able to
>  - set both guarantee and limit for a resource group
>  - use limit on some and guarantee on some
>  - optimize the usage of available resources 

I think, if we have some of the dynamic resource limit adjustments
possible then some of the above functionality could be achieved. And I
think that could be a good start point.

-rohit

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/