linux-kernel - Re: [PATCH v2 00/22] mm: lru

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Message-ID: <20120222061618.GT7703@one.firstfloor.org>
Date:	Wed, 22 Feb 2012 07:16:18 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Hugh Dickins <hughd@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	tim.c.chen@...ux.intel.com
Subject: Re: [PATCH v2 00/22] mm: lru_lock splitting

On Wed, Feb 22, 2012 at 09:11:32AM +0400, Konstantin Khlebnikov wrote:
> Andi Kleen wrote:
> >Konstantin Khlebnikov<khlebnikov@...nvz.org>  writes:
> >
> >Konstantin,
> >
> >>There complete patch-set with my lru_lock splitting
> >>plus all related preparations and cleanups rebased to next-20120210
> >
> >On large systems we're also seeing lock contention on the lru_lock
> >without using memcgs. Any thoughts how this could be extended for this
> >situation too?
> 
> We can split lru_lock by pfn-based interleaving.
> After all these cleanups it is very easy. I already have patch for this.

Cool. If you send it can try it out on a large system.

This would split the LRU by pfn too, correct?

-Andi
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