Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751345AbVJQUaY (ORCPT ); Mon, 17 Oct 2005 16:30:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751352AbVJQUaY (ORCPT ); Mon, 17 Oct 2005 16:30:24 -0400 Received: from e33.co.us.ibm.com ([32.97.110.151]:59605 "EHLO e33.co.us.ibm.com") by vger.kernel.org with ESMTP id S1751345AbVJQUaX (ORCPT ); Mon, 17 Oct 2005 16:30:23 -0400 Date: Tue, 18 Oct 2005 01:54:19 +0530 From: Dipankar Sarma To: "Christopher Friesen" Cc: Linus Torvalds , Eric Dumazet , Jean Delvare , Serge Belyshev , LKML , Andrew Morton , Manfred Spraul Subject: Re: VFS: file-max limit 50044 reached Message-ID: <20051017202419.GG13665@in.ibm.com> Reply-To: dipankar@in.ibm.com References: <4353CADB.8050709@cosmosbay.com> <20051017162930.GC13665@in.ibm.com> <4353E6F1.8030206@cosmosbay.com> <4353F7B5.1040101@cosmosbay.com> <4353FDE8.8070909@cosmosbay.com> <435408AD.4060505@nortel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <435408AD.4060505@nortel.com> User-Agent: Mutt/1.5.10i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 936 Lines: 22 On Mon, Oct 17, 2005 at 02:25:17PM -0600, Christopher Friesen wrote: > Linus Torvalds wrote: > > >Yes, it may screw up some latency stuff, but quite frankly, even with your > >patch and even ignoring the call_rcu_bh case, I'm convinced you can easily > >get into the situation where softirqd just doesn't run soon enough. > > > >But at least I think I understand _why_ rcu processing was delayed. > > Could this be related to the "rename14 LTP test with /tmp as tmpfs and > HIGHMEM causes OOM-killer invocation due to zone normal exhaustion" issue? Could very well be. Chris, could you please try booting with rcupdate.maxbatch=10000 and see if the problem goes away ? Thanks Dipankar - 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/