From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from digeo-nav01.digeo.com (digeo-nav01.digeo.com [192.168.1.233]) by packet.digeo.com (8.9.3+Sun/8.9.3) with SMTP id OAA00974 for ; Tue, 17 Sep 2002 14:17:07 -0700 (PDT) Message-ID: <3D879BD1.D02F645E@digeo.com> Date: Tue, 17 Sep 2002 14:17:05 -0700 From: Andrew Morton MIME-Version: 1.0 Subject: Re: [Lse-tech] Rollup patch of basic rmap against 2.5.26 References: <41260000.1032286918@baldur.austin.ibm.com> <3D879968.B346D1C7@digeo.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken , Linux Scalability Effort List , Linux Memory Management List-ID: Andrew Morton wrote: > > Dave McCracken wrote: > > > > ... > > daniel_rmap_speedup Use hashed pte_chain locks > > This one was shown to be a net loss on the NUMA-Q's. > But thanks for testing - I forgot to say that ;) rmap's overhead manifests with workloads which are setting up and tearing doen pagetables a lot. fork/exec/exit/pagefaults/munmap/etc. I guess forking servers may hurt. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/