From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Odd kswapd behaviour after suspending in 2.6.11-rc1 From: Nigel Cunningham Reply-To: ncunningham@linuxmail.org In-Reply-To: <20050116043639.GE24653@blackham.com.au> References: <20050113085626.GA5374@blackham.com.au> <20050113101426.GA4883@blackham.com.au> <41E8ED89.8090306@yahoo.com.au> <1105785254.13918.4.camel@desktop.cunninghams> <41E8F313.4030102@yahoo.com.au> <1105786115.13918.9.camel@desktop.cunninghams> <41E8F7F7.1010908@yahoo.com.au> <20050115124018.GA24653@blackham.com.au> <20050115125311.GA19055@blackham.com.au> <41E9E5B6.1020306@yahoo.com.au> <20050116043639.GE24653@blackham.com.au> Content-Type: text/plain Message-Id: <1105851404.21576.4.camel@laptop.cunninghams> Mime-Version: 1.0 Date: Sun, 16 Jan 2005 15:56:44 +1100 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Bernard Blackham Cc: Nick Piggin , Linux Memory Management List-ID: Hi. On Sun, 2005-01-16 at 15:36, Bernard Blackham wrote: > On Sun, Jan 16, 2005 at 02:55:34PM +1100, Nick Piggin wrote: > > Someone asked for an order 10 allocation by the looks. > > > > This might tell us what happened. > > Yep. Attached. Appears Software Suspend is asking for it as part of > it's memory grab. Perhaps wakeup_kswapd just needs to be disabled > while suspending? Nigel? That makes sense. Okay: Nick, does it look like an issue that affects swsusp (in kernel version) as well? If not, we can stop bugging you, and I'll add an appropriate test to stop it acting on the basis of our grabbing of memory while suspending. (FYI, we seek to grab all available memory while preparing the image so that we can get some stability in the numbers and (if we really do need to eat some memory), make headway while leaving other processes thawed. (ie we use the vm pressure to get memory freed until we meet our constraints). Regards, Nigel -- Nigel Cunningham Software Engineer Cyclades Corporation -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: aart@kvack.org