Re: Strange Server Behavior

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Author: Mark Phillips
Date:  
To: Main PLUG discussion list
Subject: Re: Strange Server Behavior
I only installed nfs because I started to use this server as a media
server, and I wanted my family to be able to add movies to the movie folder
on the server. Mediatomb then scans the folder and makes the movies
available on our nifty wifi enabled TV.

Would samba be a better choice? The other computers on the network are mac,
windows, ubuntu. However, the windoes user has a low probability of adding
any movies by herself....;) (no gender bashing here.....I live with four
wonderful women, and one of them is a complete techo-phobe, and she is
proud of it.....but that helps keep me around, so all is good with the
world).

Mark

On Wed, Jun 27, 2012 at 8:20 AM, Carruth, Rusty <
> wrote:

> Personal guesses, YMMV, YKWYPFI (you know what you paid for it), etc:****
>
> ** **
>
> If you don’t need NFS, leave it off. When I saw it in there I thought –
> oh, my. For NFS clients, I know you can freeze a system when the server
> goes unresponsive. Or I think I know that J****
>
> ** **
>
> Of all those things, are there any you are NOT using?****
>
> ** **
>
> Besides the ping test mentioned earlier, I suppose you could start
> dividing and conquering (turn back on half the items below, run the test.
> If passes, run the other half to verify that the mix of the other half will
> fail, THEN split the failing half in half and repeat).****
>
> ** **
>
> I can’t recall if I’ve ever seen a hung printer hang cups enough to hang
> the entire system. It will hang printing, of course, but…****
>
> ** **
>
> In any case, yes it sounds like some sort of hw/sw interaction or maybe
> just sw.****
>
> ** **
>
> Good luck, Mr Phelps! ;-)****
>
> ** **
>
> Rusty****
>
> ** **
>
> *From:* [mailto:
> ] *On Behalf Of *Mark
> Phillips
> *Sent:* Wednesday, June 27, 2012 6:51 AM
>
> *To:* Main PLUG discussion list
> *Subject:* Re: Strange Server Behavior****
>
> ** **
>
> Some more pieces to the puzzle...
>
>
> I ran the same ping test last night (laptop to server), but stopped the
> following services on the server:
> apache2
> exim4
> mediatomb
> mysql
> nfs-kernel-server
> nfs-common
> openvpnas
> cups
> ntp
> rpcbind
>
> And there were no packets lost!
>
> 2802 packets transmitted, 2802 received, 0% packet loss, time 28010243ms
> rtt min/avg/max/mdev = 0.063/0.157/0.319/0.033 ms
>
> This is all that was running:
> USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
> root         1  0.0  0.0   2036   736 ?        Ss   Jun25   0:01 init [2]
> root         2  0.0  0.0      0     0 ?        S    Jun25   0:00 [kthreadd]
> root         3  0.0  0.0      0     0 ?        S    Jun25   0:00
> [migration/0]
> root         4  0.0  0.0      0     0 ?        S    Jun25   0:00
> [ksoftirqd/0]
> root         5  0.0  0.0      0     0 ?        S    Jun25   0:00
> [watchdog/0]
> root         6  0.0  0.0      0     0 ?        S    Jun25   0:00 [events/0]
> root         7  0.0  0.0      0     0 ?        S    Jun25   0:00 [cpuset]
> root         8  0.0  0.0      0     0 ?        S    Jun25   0:00 [khelper]
> root         9  0.0  0.0      0     0 ?        S    Jun25   0:00 [netns]
> root        10  0.0  0.0      0     0 ?        S    Jun25   0:00
> [async/mgr]
> root        11  0.0  0.0      0     0 ?        S    Jun25   0:00 [pm]
> root        12  0.0  0.0      0     0 ?        S    Jun25   0:00
> [sync_supers]
> root        13  0.0  0.0      0     0 ?        S    Jun25   0:00
> [bdi-default]
> root        14  0.0  0.0      0     0 ?        S    Jun25   0:00
> [kintegrityd/0]
> root        15  0.0  0.0      0     0 ?        S    Jun25   0:00
> [kblockd/0]
> root        16  0.0  0.0      0     0 ?        S    Jun25   0:00 [kacpid]
> root        17  0.0  0.0      0     0 ?        S    Jun25   0:00
> [kacpi_notify]
> root        18  0.0  0.0      0     0 ?        S    Jun25   0:00
> [kacpi_hotplug]
> root        19  0.0  0.0      0     0 ?        S    Jun25   0:00 [kseriod]
> root        21  0.0  0.0      0     0 ?        S    Jun25   0:00
> [kondemand/0]
> root        22  0.0  0.0      0     0 ?        S    Jun25   0:00
> [khungtaskd]
> root        23  0.0  0.0      0     0 ?        S    Jun25   0:00 [kswapd0]
> root        24  0.0  0.0      0     0 ?        SN   Jun25   0:00 [ksmd]
> root        25  0.0  0.0      0     0 ?        S    Jun25   0:00 [aio/0]
> root        26  0.0  0.0      0     0 ?        S    Jun25   0:00 [crypto/0]
> root       154  0.0  0.0      0     0 ?        S    Jun25   0:00
> [ksuspend_usbd]
> root       155  0.0  0.0      0     0 ?        S    Jun25   0:00 [khubd]
> root       157  0.0  0.0      0     0 ?        S    Jun25   0:00 [ata/0]

>
> So, perhaps I don't have a hardware problem, but a software problem?
>
> Mark ****
>
> ** **
>
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