Re: NFS server processes spinning?

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FYI, I reported this as
https://bugzilla.redhat.com/show_bug.cgi?id=1313480

-derek

Derek Atkins <warlord@xxxxxxx> writes:

> Hi,
>
> I've got a Wandboard Quad running Fedora 22 (current as of yesterday).
> This box is a MythTV backend.  It's also running an NFS server to serve
> the 2 TB Sata drive connected to store my recordings.
>
> I noticed that the nfs server processes are spinning, even when there
> are no clients attached.  Here's an output from top:
>
> top - 16:19:30 up 23:36,  1 user,  load average: 2.79, 2.75, 2.66
> Tasks: 118 total,   5 running, 113 sleeping,   0 stopped,   0 zombie
> %Cpu(s):  0.3 us, 38.5 sy,  0.0 ni, 40.7 id,  0.0 wa,  0.0 hi, 20.6 si,  0.0 st
> KiB Mem :  2064876 total,    62132 free,    73572 used,  1929172 buff/cache
> KiB Swap:   249852 total,   249432 free,      420 used.  1935800 avail Mem 
>
>   PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND     
>  1024 root      20   0       0      0      0 R  77.6  0.0   1154:25 nfsd        
>  1023 root      20   0       0      0      0 R  76.6  0.0   1150:27 nfsd        
>     3 root      20   0       0      0      0 R  47.4  0.0 602:37.59 ksoftirqd/0 
>    60 root      20   0       0      0      0 R  13.8  0.0  36:23.26 kswapd0     
>   981 root      20   0  356948  29000  18440 S   4.6  1.4 158:47.23 mythbackend 
>    13 root      20   0       0      0      0 S   1.0  0.0  10:25.97 ksoftirqd/1 
>    18 root      20   0       0      0      0 S   1.0  0.0   9:19.12 ksoftirqd/2 
>  8556 root      20   0    8908   3556   3060 R   1.0  0.2   0:00.16 top         
>
> Any idea why NFS is spinning like this?  I haven't noticed this on my
> x86-based Fedora servers.
>
> -derek

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord@xxxxxxx                        PGP key available
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