Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759852Ab3CHXVN (ORCPT ); Fri, 8 Mar 2013 18:21:13 -0500 Received: from mail-ee0-f52.google.com ([74.125.83.52]:59098 "EHLO mail-ee0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757654Ab3CHXVL (ORCPT ); Fri, 8 Mar 2013 18:21:11 -0500 Message-ID: <513A7263.5090303@suse.cz> Date: Sat, 09 Mar 2013 00:21:07 +0100 From: Jiri Slaby User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:19.0) Gecko/20130124 Thunderbird/19.0 MIME-Version: 1.0 To: Hillf Danton CC: Daniel J Blueman , Linux Kernel , Steffen Persvold , mm , Mel Gorman , Andrew Morton Subject: Re: kswapd craziness round 2 References: <5121C7AF.2090803@numascale-asia.com> <51254AD2.7000906@suse.cz> <512F8D8B.3070307@suse.cz> <5138EC6C.6030906@suse.cz> In-Reply-To: X-Enigmail-Version: 1.6a1pre Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1678 Lines: 56 On 03/08/2013 07:42 AM, Hillf Danton wrote: > On Fri, Mar 8, 2013 at 3:37 AM, Jiri Slaby wrote: >> On 03/01/2013 03:02 PM, Hillf Danton wrote: >>> On Fri, Mar 1, 2013 at 1:02 AM, Jiri Slaby wrote: >>>> >>>> Ok, no difference, kswap is still crazy. I'm attaching the output of >>>> "grep -vw '0' /proc/vmstat" if you see something there. >>>> >>> Thanks to you for test and data. >>> >>> Lets try to restore the deleted nap, then. >> >> Oh, it seems to be nice now: >> root 579 0.0 0.0 0 0 ? S Mar04 0:13 [kswapd0] >> > Double thanks. There is one downside. I'm not sure whether that patch was the culprit. My Thunderbird is jerky when scrolling and lags while writing this message. The letters sometimes appear later than typed and in groups. Like I (kbd): My Thunder TB: My Thunder I (kbd): b-i-r-d TB: is silent I (kbd): still typing... TB: bird is Perhaps it's not only TB. > But Mel does not like it, probably. > Lets try nap in another way. Will try next week. > --- a/mm/vmscan.c Thu Feb 21 20:01:02 2013 > +++ b/mm/vmscan.c Fri Mar 8 14:36:10 2013 > @@ -2793,6 +2793,10 @@ loop_again: > * speculatively avoid congestion waits > */ > zone_clear_flag(zone, ZONE_CONGESTED); > + > + else if (sc.priority > 2 && > + sc.priority < DEF_PRIORITY - 2) > + wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10); > } > > /* -- js suse labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/