lkml.org 
[lkml]   [2010]   [Jun]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 03/12] tracing, vmscan: Add trace event when a page is written
On 06/14/2010 07:17 AM, Mel Gorman wrote:
> This patch adds a trace event for when page reclaim queues a page for IO and
> records whether it is synchronous or asynchronous. Excessive synchronous
> IO for a process can result in noticeable stalls during direct reclaim.
> Excessive IO from page reclaim may indicate that the system is seriously
> under provisioned for the amount of dirty pages that exist.
>
> Signed-off-by: Mel Gorman<mel@csn.ul.ie>

Acked-by: Rik van Riel <riel@redhat.com>

--
All rights reversed


\
 
 \ /
  Last update: 2010-06-14 19:41    [W:0.392 / U:3.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site