From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 27 May 2001 16:59:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 27 May 2001 16:59:39 -0400 Received: from chromium11.wia.com ([207.66.214.139]:52229 "EHLO neptune.kirkland.local") by vger.kernel.org with ESMTP id ; Sun, 27 May 2001 16:59:29 -0400 Message-ID: <3B116BAC.F45612F3@chromium.com> Date: Sun, 27 May 2001 14:03:40 -0700 From: Fabio Riccardi X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.2 i686) X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: 2.4.5-ac1 won't boot with 4GB bigmem option In-Reply-To: <01052722010200.01106@beastie> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Same here, I have a dual 1GHz PIII with 4G, I don't get an oops but an infinite loop of: > mm: critical shortage of bounce buffers. Indeed this message has been pestering me in all the recent .4-acx kernels when the machine is under heavy FS pressure. In these kernels I observe a significative (5-10%) performance degradation as soon as the FS cache fills up all the available memory, at this moment "kswapd" starts to take lots of CPU time (10-20%) and I keep getting plenty of the above messages. I'm running SpecWeb with the X15 webserver, which uses sendfile to send its content, and a very large file set (8-9G, more than twice as much as the physical RAM). 2.4.2-acx and early 2.4.3-acx kernles were much better in this respect and a lot more stable. - Fabio Ben Twijnstra wrote: > Hi, > > I compiled and booted the 2.4.5-ac1 kernel with the CONFIG_HIGHMEM4G=y option > and got an oops in __alloc_pages() (called by alloc_bounce() called by > schedule()). Everything works fine if I turn the 4GB mode off. > > Machine is a Dell Precision with 2 Xeons and 2GB of RAM. > > 2.4.5 works fine with the 4GB. Any idea what changed between the two? > > Grtz, > > Ben > - > 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/