Strange Server Behavior

[Mark Phillips]

Right now, the server is not doing anything but sitting there....

Tasks:  98 total,   1 running,  97 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0%us,  0.3%sy,  0.0%ni, 99.7%id,  0.0%wa,  0.0%hi,  0.0%si,
0.0%st
Mem:   1033780k total,   217560k used,   816220k free,     6220k buffers
Swap:  2019320k total,        0k used,  2019320k free,    94056k cached

Plenty of swap, not very busy. It may be over heating, but not sure why.

I am going to run a test tonight - ping every 10 seconds and time stamp the
output into a file. Perhaps I will see gaps or unusually long response
times and I can correlate that with the log files.

Mark

On Mon, Jun 25, 2012 at 10:09 PM, JD Austin <jd at twingeckos.com> wrote:

> I've had servers that act like that.. usually they're over heating,
> completely I/O bound, or swapping due to low available memory.
>
> On Mon, Jun 25, 2012 at 10:00 PM, Mark Phillips <
> mark at phillipsmarketing.biz> wrote:
>
>> Nope - everything just stops - ping waits for a response, web services
>> just wait for the server, file transfers stop and wait.......as if time
>> just stopped for the server, then starts again without any errors being
>> evident.
>>
>> Mark
>>
>>
>> On Mon, Jun 25, 2012 at 9:57 PM, Stephen <cryptworks at gmail.com> wrote:
>>
>>> Can you do access any other services hosted by the server during this
>>> time? Or even an extended ping?
>>> On Jun 25, 2012 9:53 PM, "Mark Phillips" <mark at phillipsmarketing.biz>
>>> wrote:
>>>
>>>> I have a headless server running Linux version 2.6.32-5-686 (Debian
>>>> 2.6.32-45) (dannf at debian.org) (gcc version 4.3.5 (Debian 4.3.5-4) and
>>>> no X or window manager, and I have noticed in the past couple of days that
>>>> when I ssh in the server it occasionally stops responding for a minute or
>>>> two, then comes back as if nothing had happened. It is a random event -
>>>> maybe once an hour. I cannot find anything in the logs - no error messages.
>>>> There is nothing wrong with the machine where I initiated the ssh session,
>>>> and it is not connected to ssh. The server completely stops responding,
>>>> then comes back as if nothing had happened.
>>>>
>>>> How would I go about diagnosing this problem?
>>>>
>>>> Thanks,
>>>>
>>>> Mark
>>>>
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