Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 1 Mar 2003 03:58:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 1 Mar 2003 03:58:19 -0500 Received: from ns.suse.de ([213.95.15.193]:37133 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id ; Sat, 1 Mar 2003 03:58:19 -0500 Date: Sat, 1 Mar 2003 10:08:39 +0100 From: Andi Kleen To: Ed Tomlinson Cc: Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: [PATCH] New dcache / inode hash tuning patch Message-ID: <20030301090839.GA11997@wotan.suse.de> References:

<20030228185910.GA5694@wotan.suse.de> <20030301004942.GA16973@delft.aura.cs.cmu.edu> <20030301011723.GA31126@wotan.suse.de> <20030301043131.7D5301058@oscar.casa.dyndns.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030301043131.7D5301058@oscar.casa.dyndns.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 623 Lines: 14 > I wonder what would happen if you reordered the chains moving a 'found' > dentry to the front of the chain? If this could be done without > excessive locking it might help keep hot entries quickly accessable. > This operation should be cheaper given you are using hlists. You would need to fetch a spinlock for LRU, while the current lookup runs completely lockless. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/