| 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
| ||
|
Date: Fri, 2 Mar 2007 20:19:26 -0800 From: William Lee Irwin III <wli@...omorphy.com> To: Christoph Lameter <clameter@...r.sgi.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Rik van Riel <riel@...hat.com>, Bill Irwin <bill.irwin@...cle.com>, Mel Gorman <mel@...net.ie>, npiggin@...e.de, mingo@...e.hu, jschopp@...tin.ibm.com, arjan@...radead.org, torvalds@...ux-foundation.org, mbligh@...igh.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: The performance and behaviour of the anti-fragmentation related patches On Fri, 2 Mar 2007, William Lee Irwin III wrote: >> AIUI that phenomenon is universal to NUMA. Maybe it's time we >> reexamined our locking algorithms in the light of fairness >> considerations. On Fri, Mar 02, 2007 at 07:15:38PM -0800, Christoph Lameter wrote: > This is a phenomenon that is usually addressed at the cache logic level. > Its a hardware maturation issue. A certain package should not be allowed > to hold onto a cacheline forever and other packages must have a mininum > time when they can operate on that cacheline. I think when I last asked about that I was told "cache directories are too expensive" or something on that order, if I'm not botching this, too. In any event, the above shows a gross inaccuracy in my statement. -- wli - 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/
Powered by blists - more mailing lists