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From: Jiri Slaby <jslaby@suse.cz>
To: Hillf Danton <dhillf@gmail.com>
Cc: Daniel J Blueman <daniel@numascale-asia.com>,
	Linux Kernel <linux-kernel@vger.kernel.org>,
	Steffen Persvold <sp@numascale.com>
Subject: Re: kswapd craziness round 2
Date: Thu, 07 Mar 2013 20:37:16 +0100	[thread overview]
Message-ID: <5138EC6C.6030906@suse.cz> (raw)
In-Reply-To: <CAJd=RBD=eT=xdEy+v3GBZ47gd47eB+fpF-3VtfpLAU7aEkZGgA@mail.gmail.com>

On 03/01/2013 03:02 PM, Hillf Danton wrote:
> On Fri, Mar 1, 2013 at 1:02 AM, Jiri Slaby <jslaby@suse.cz> 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]

Thanks.

> Hillf
> --- a/mm/vmscan.c	Thu Feb 21 20:01:02 2013
> +++ b/mm/vmscan.c	Fri Mar  1 21:55:40 2013
> @@ -2817,6 +2817,10 @@ loop_again:
>  		 */
>  		if (sc.nr_reclaimed >= SWAP_CLUSTER_MAX)
>  			break;
> +
> +		if (sc.priority < DEF_PRIORITY - 2)
> +			congestion_wait(BLK_RW_ASYNC, HZ/10);
> +
>  	} while (--sc.priority >= 0);
> 
>  out:
> --
> 


-- 
js
suse labs

  reply	other threads:[~2013-03-07 19:37 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-18  6:18 kswapd craziness round 2 Daniel J Blueman
2013-02-18 11:42 ` Hillf Danton
2013-02-18 15:05   ` Daniel J Blueman
2013-02-20 22:14   ` Jiri Slaby
2013-02-21 12:07     ` Hillf Danton
2013-02-24 21:27       ` Jiri Slaby
2013-02-28 17:02       ` Jiri Slaby
2013-03-01 14:02         ` Hillf Danton
2013-03-07 19:37           ` Jiri Slaby [this message]
2013-03-08  6:42             ` Hillf Danton
2013-03-08  6:42               ` Hillf Danton
2013-03-08  7:29               ` Zlatko Calusic
2013-03-08  7:29                 ` Zlatko Calusic
2013-03-08  8:27                 ` Hillf Danton
2013-03-08  8:27                   ` Hillf Danton
2013-03-08 23:21               ` Jiri Slaby
2013-03-08 23:21                 ` Jiri Slaby
2013-03-19 16:59                 ` Pádraig Brady
2013-03-19 16:59                   ` Pádraig Brady
2013-03-20  4:12                   ` Hillf Danton
2013-03-20  4:12                     ` Hillf Danton
2013-03-20  8:39                     ` Jiri Slaby
2013-03-20  8:39                       ` Jiri Slaby
  -- strict thread matches above, loose matches on Subject: below --
2013-02-17 22:02 Jiri Slaby
2013-02-17 22:02 ` Jiri Slaby

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