From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: 2.6.10-rc1-mm4 -1 EAGAIN after allocation failure was: Re: Kernel 2.6.9 Multiple Page Allocation Failures Date: Wed, 10 Nov 2004 08:56:21 -0200 Message-ID: <20041110105621.GA11097@logos.cnet> References: <20041109144607.2950a41a.akpm@osdl.org> <20041109235201.GC20754@zaphods.net> <20041110012733.GD20754@zaphods.net> <20041109173920.08746dbd.akpm@osdl.org> <20041110020327.GE20754@zaphods.net> <419197EA.9090809@cyberone.com.au> <20041110102854.GI20754@zaphods.net> <20041110120624.GF28163@zaphods.net> <20041110085831.GB10740@logos.cnet> <20041110124810.GG28163@zaphods.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Nick Piggin , Andrew Morton , linux-kernel@vger.kernel.org, netdev@oss.sgi.com Return-path: To: Stefan Schmidt Content-Disposition: inline In-Reply-To: <20041110124810.GG28163@zaphods.net> Sender: netdev-bounce@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Wed, Nov 10, 2004 at 01:48:11PM +0100, Stefan Schmidt wrote: > On Wed, Nov 10, 2004 at 06:58:31AM -0200, Marcelo Tosatti wrote: > > > > > Can you try the following patch, please? It is diffed against 2.6.10-rc1, > > > I did. No apparent change with mm4 and vm.min_free_kbytes = 8192. I will try > > > latest bk next. > > > > > I set it back to CONFIG_PACKET_MMAP=y and if the application does not freeze > > > > for some hours at this load we can blame at least this issue (-1 EAGAIN) on > > > > that parameter. > > > Nope, that didn't change anything, still getting EAGAIN, checked two times. > > Its not clear to me - do you have Nick's watermark patch in? > Yes i have vm.min_free_kbytes=8192 and Nick's patch in mm4. I'll try > rc1-bk19 with his restore-atomic-buffer patch in a few minutes. Stefan, Please always run your tests with show_free_area() call at the page allocation failure path. I fully disagree with Andrew when he says "I don't think it'd help much - we know what's happening."