From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx202.postini.com [74.125.245.202]) by kanga.kvack.org (Postfix) with SMTP id 13E456B0088 for ; Fri, 5 Apr 2013 06:13:15 -0400 (EDT) Received: by mail-ea0-f177.google.com with SMTP id q14so1281867eaj.8 for ; Fri, 05 Apr 2013 03:13:13 -0700 (PDT) Message-ID: <515EA3B7.5030308@gmail.com> Date: Fri, 05 Apr 2013 12:13:11 +0200 From: Ivan Danov MIME-Version: 1.0 Subject: Re: System freezes when RAM is full (64-bit) References: <5159DCA0.3080408@gmail.com> <20130403121220.GA14388@dhcp22.suse.cz> <515CC8E6.3000402@gmail.com> <20130404070856.GB29911@dhcp22.suse.cz> <515D89BE.2040609@gmail.com> <20130404151658.GJ29911@dhcp22.suse.cz> In-Reply-To: <20130404151658.GJ29911@dhcp22.suse.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Simon Jeons , linux-mm@kvack.org, 1162073@bugs.launchpad.net Tried with vm.swappiness=60, but the only improvement is that now the mouse input is less choppy than before, but still the problem remains - the computer is not usable at all, one could not even stop the program, causing the problem. Best, Ivan -- On 04/04/13 17:16, Michal Hocko wrote: > On Thu 04-04-13 16:10:06, Ivan Danov wrote: >> Hi Michal, >> >> Yes, I use swap partition (2GB), but I have applied some things for >> keeping the life of the SSD hard drive longer. All the things I have >> done are under point 3. at >> http://www.rileybrandt.com/2012/11/18/linux-ultrabook/. > OK, I guess I know what's going on here. > So you did set vm.swappiness=0 which (for some time) means that there is > almost no swapping going on (although you have plenty of swap as you are > mentioning above). > This shouldn't be a big deal normally but you are also backing your > /tmp on tmpfs which is in-memory filesystem. This means that if you > are writing to /tmp a lot then this content will fill up your memory > which is not swapped out until the memory reclaim is getting into real > troubles - most of the page cache is dropped by that time so your system > starts trashing. > > I would encourage you to set swappiness to a more reasonable value (I > would use the default value which is 60). I understand that you are > concerned about your SSD lifetime but your user experience sounds like a > bigger priority ;) > >> By system freezes, I mean that the desktop environment doesn't react >> on my input. Just sometimes the mouse is reacting very very choppy >> and slowly, but most of the times it is not reacting at all. In the >> attached file, I have the output of the script and the content of >> dmesg for all levels from warn to emerg, as well as my kernel config. > I haven't checked your attached data but you should get an overview from > Shmem line from /proc/meminfo which tells you how much shmem/tmpfs > memory you are using and grep "^Swap" /proc/meminfo will tell you more > about your swap usage. > >> Best, >> Ivan > HTH -- 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: email@kvack.org