linux-kernel - Re: [RFC 2/3] SLUB: Implement targeted reclaim and partial list defragmentation

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Sat, 5 May 2007 19:11:53 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, dgc@....com,
	Eric Dumazet <dada1@...mosbay.com>, Mel Gorman <mel@....ul.ie>
Subject: Re: [RFC 2/3] SLUB: Implement targeted reclaim and partial list defragmentation

On Sat, May 05, 2007 at 08:42:50AM -0700, Christoph Lameter wrote:
> On Sat, 5 May 2007, Andi Kleen wrote:
> 
> > clameter@....com writes:
> > > 
> > > NOTE: This patch is for conceptual review. I'd appreciate any feedback
> > > especially on the locking approach taken here. It will be critical to
> > > resolve the locking issue for this approach to become feasable.
> > 
> > Do you have any numbers on how this improves dcache reclaim under memory pressure?
> 
> How does one measure something like that?

You could measure how many dentries are flushed before an > order 1 allocation
is satisfied?  Make sure to fill the dcache first.

There are no counters there for this, but that should be reasonably easy to add.

-Andi

-
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/