Help with reading strace

[Andy Green]

Dan Track wrote:
> On 3/22/06, Andy Green <andy at warmcat.com> wrote:
>> Dan Track wrote:
>>
>>> Any idea what is going on? I've tried to figure it out, but I'm not
>>> that great an expert. Again the problem occurred at the space below in
>>> the tcpdump.
>> Sorry I can't see anything funny about it like repeated ACK packets.  It
>> seems that 10.10.8.24 decides not to send anything new for 5 seconds
>> from what I can make out, but I admit going crosseyed trying to look at it.
>>
>> -Andy
>>
> 
> Hi
> 
> Thanks for the update. Is there any other types of test that I could
> run, or utilities I could use to debug this?

I think the first move is to get more idea of the direction of the 
problem... for example your strace shows the timeout for the poll() 
action is set to 5 seconds, which is a bit suspicious.  Do you see 
problems in any other protocols or applications on the network?

Check for general network malaise by floodpinging, eg

# ping -f 10.10.8.24

You should see a single flickering . only.

-Andy
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