From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx205.postini.com [74.125.245.205]) by kanga.kvack.org (Postfix) with SMTP id 5EF3B6B0033 for ; Thu, 9 May 2013 16:24:16 -0400 (EDT) Message-ID: <518C05ED.6080000@bitsync.net> Date: Thu, 09 May 2013 22:24:13 +0200 From: Zlatko Calusic MIME-Version: 1.0 Subject: Re: The pagecache unloved in zone NORMAL? References: <51671D4D.9080003@bitsync.net> <5186D433.3050301@bitsync.net> In-Reply-To: <5186D433.3050301@bitsync.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm On 05.05.2013 23:50, Zlatko Calusic wrote: > useful additional insight into this problem, just as I expected. Here's > the data after 31h of server uptime (also see the attached graph): > > Node 0, zone DMA32 > nr_inactive_file 443705 > avg_age_inactive_file: 362800 > Node 0, zone Normal > nr_inactive_file 32832 > avg_age_inactive_file: 38760 > 4 days later: Node 0, zone DMA32 nr_inactive_file 404276 nr_vmscan_write 2897 avg_age_inactive_file: 318208 Node 0, zone Normal nr_inactive_file 4677 nr_vmscan_write 92536 avg_age_inactive_file: 3692 Inactive pages in the Normal zone are reclaimed in less than 4 seconds (vs 5 minutes in the DMA32 zone), nr_vmscan_write is high and constantly rising. -- Zlatko -- 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