From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx198.postini.com [74.125.245.198]) by kanga.kvack.org (Postfix) with SMTP id 8FF2F6B004D for ; Wed, 28 Mar 2012 15:38:02 -0400 (EDT) Received: by pbcup15 with SMTP id up15so2744172pbc.14 for ; Wed, 28 Mar 2012 12:38:01 -0700 (PDT) MIME-Version: 1.0 From: Andy Lutomirski Date: Wed, 28 Mar 2012 12:37:41 -0700 Message-ID: Subject: Unexpected swapping without memory pressure Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Last night, a server I run did something very strange: it swapped out a bunch of pages when it apparently had lots of free memory. This same server has had a more or less identical load for weeks and hasn't swapped. Munin says: http://web.mit.edu/luto/www/kernel/memory-day.png http://web.mit.edu/luto/www/kernel/swap-day.png When this happened, free memory was high. Any ideas? This is a mainline kernel 3.0.19 with very minor and non-mm-related patches. Thanks, Andy -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org