linux-kernel - Re: kswapd craziness round 2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 07 Mar 2013 20:37:16 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	Hillf Danton <dhillf@...il.com>
CC:	Daniel J Blueman <daniel@...ascale-asia.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Steffen Persvold <sp@...ascale.com>
Subject: Re: kswapd craziness round 2

On 03/01/2013 03:02 PM, Hillf Danton wrote:
> On Fri, Mar 1, 2013 at 1:02 AM, Jiri Slaby <jslaby@...e.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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/