netdev - Re: [PATCH v3 6/7] tcp buffer limitation: per-cgroup limit

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Message-ID: <20110928030623.GF7761@one.firstfloor.org>
Date:	Wed, 28 Sep 2011 05:06:23 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Balbir Singh <bsingharora@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Glauber Costa <glommer@...allels.com>,
	linux-kernel@...r.kernel.org, paul@...lmenage.org,
	lizf@...fujitsu.com, kamezawa.hiroyu@...fujitsu.com,
	ebiederm@...ssion.com, davem@...emloft.net, gthelen@...gle.com,
	netdev@...r.kernel.org, linux-mm@...ck.org, kirill@...temov.name
Subject: Re: [PATCH v3 6/7] tcp buffer limitation: per-cgroup limit

On Wed, Sep 28, 2011 at 07:59:31AM +0530, Balbir Singh wrote:
> On Sat, Sep 24, 2011 at 10:28 PM, Andi Kleen <andi@...stfloor.org> wrote:
> > Glauber Costa <glommer@...allels.com> writes:
> >
> >> This patch uses the "tcp_max_mem" field of the kmem_cgroup to
> >> effectively control the amount of kernel memory pinned by a cgroup.
> >>
> >> We have to make sure that none of the memory pressure thresholds
> >> specified in the namespace are bigger than the current cgroup.
> >
> > I noticed that some other OS known by bash seem to have a rlimit per
> > process for this. Would that make sense too? Not sure how difficult
> > your infrastructure would be to extend to that.
> 
> rlimit per process for tcp usage? Interesting, that reminds me, we
> need to revisit rlimit (RSS) at some point

I would love to have that for some situations!
-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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