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List: freebsd-hackers
Subject: Re: FreeBSD-10 and processes swapping out for no reason
From: Dmitry Sivachenko <trtrmitya () gmail ! com>
Date: 2014-01-09 21:08:35
Message-ID: BE4C690E-4F75-41BE-9BC2-17D79F66B8ED () gmail ! com
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On 07 янв. 2014 г., at 20:16, Dmitry Sivachenko <trtrmitya@gmail.com> wrote:
> Hello!
>
> Recently I updated several of my servers from 9.2-STABLE 10.0:
> 10.0-PRERELEASE FreeBSD 10.0-PRERELEASE #0 r259661
>
> Workload did not change at all, same programs, same load, same hardware.
>
> I noticed that some of the processes on 10.0 boxes are marked as swapped out in \
> top(1) output:
> 1436 root 1 43 0 16524K 0K nanslp 14 1:14 0.00% <cron>
> 1381 smmsp 1 20 0 23988K 0K pause 18 0:04 0.00% <sendma
> 99348 mitya 1 21 0 23492K 0K pause 16 0:00 0.00% <csh>
>
> ps also shows them as swapped out (W as second character in state field):
> 1381 - IWs 0:00.00 sendmail: Queue runner@00:30:00 for /var/spool/clie
> 1436 - IWs 0:00.00 /usr/sbin/cron -s
> 80231 - IWs 0:00.00 /usr/local/sbin/collectdmon -c /usr/local/sbin/coll
> 99348 1 IWs 0:00.00 -csh (csh)
>
> These machines have enought RAM and that never happened on 9.2-STABLE.
>
> I turned off swap:
> # swapinfo
> Device 1K-blocks Used Avail Capacity
> #
>
> And state of these processes did not change: still second characted in state field \
> of ps output is W, and top shows them in angles.
> How should I treat that?
>
> Thanks.
Anyone else observing this? Right now looks like I can't trust top(1) values for RES \
and ps(1) states.
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