linux-kernel - Re: [PATCH] slub: prefetch next freelist pointer in slab

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]

Message-ID: <alpine.DEB.2.00.1112161030270.26651@router.home>
Date:	Fri, 16 Dec 2011 10:31:52 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	"Alex,Shi" <alex.shi@...el.com>, Shaohua Li <shaohua.li@...el.com>,
	Matt Mackall <mpm@...enic.com>
Subject: Re: [PATCH] slub: prefetch next freelist pointer in slab_alloc()

On Fri, 16 Dec 2011, Eric Dumazet wrote:

> Recycling a page is a problem, since freelist link chain is hot on
> cpu(s) which freed objects, and possibly very cold on cpu currently
> owning slab.

Good idea. How do the tcp benchmarks look after this?

Looks sane.

Acked-by: Christoph Lameter <cl@...ux.com>
--
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/