Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764011AbXESSuT (ORCPT ); Sat, 19 May 2007 14:50:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756765AbXESSuH (ORCPT ); Sat, 19 May 2007 14:50:07 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:35372 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756395AbXESSuG (ORCPT ); Sat, 19 May 2007 14:50:06 -0400 Date: Sat, 19 May 2007 09:30:53 -0700 From: Greg KH To: Benjamin LaHaise Cc: James Bottomley , Satyam Sharma , Matthew Wilcox , Simon Arlott , Dave Jones , Linux Kernel Mailing List , linux-scsi@vger.kernel.org, kernel-packagers@vger.kernel.org, "Robert P. J. Day" Subject: Re: sysfs makes scaling suck Re: Asynchronous scsi scanning Message-ID: <20070519163052.GA4793@kroah.com> References: <1179153096.3703.23.camel@mulgrave.il.steeleye.com> <17841.simon.1179228389@5ec7c279.invalid> <20070515120228.GI10562@parisc-linux.org> <4649E03A.1090004@simon.arlott.org.uk> <20070515172905.GJ10562@parisc-linux.org> <20070517173238.GA30571@kvack.org> <1179423924.3785.30.camel@mulgrave.il.steeleye.com> <20070517174952.GB30571@kvack.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070517174952.GB30571@kvack.org> User-Agent: Mutt/1.5.15 (2007-04-06) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1164 Lines: 25 On Thu, May 17, 2007 at 01:49:52PM -0400, Benjamin LaHaise wrote: > On Thu, May 17, 2007 at 01:45:24PM -0400, James Bottomley wrote: > > But also, the sysfs with over 4,000 (and higher) devices was > > specifically checked by OSDL (actually as part of the CGL testing) some > > of the Manoj changes (for unpinning entries etc) were needed to get it > > to function, but as of now, I believe an enterprise scaling test works > > reasonably well for it ... there certainly wasn't any evidence of it > > dying horribly in the tests. > > i386 exhausts lowmem very quickly. SCSI is in a bit better shape than > network devices as the multiplier is only around 4 compared to 16 for network > devices. And sysfs pushes nodes out of memory when we start to exhaust memory, so there should not be a problem at all. If there is, please let the sysfs developers know about it and we will work to fix this. thanks, greg k-h - 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/