UDP packet loss

[Pavel Urban]

Patrick Klos wrote:
> In article <e69ccs$cbm$1 at sf1.isc.org>, Pavel Urban  <urbanp at mlp.cz> wrote:
>> Hello,
>>
>> I've tried to find out the cause of some strange resolving problem we 
>> are experiencing. From time to time, our server seems to ignore some 
>> requests, while others are answered promptly. It seems to me that the 
>> problem is UDP packet loss.
>>
>> Udp:
>>     948795842 packets received
>>     149802 packets to unknown port received.
>>     214635022 packet receive errors
>>     1003702082 packets sent
>>
>> I've tried to increase system udp receive buffer 10x and then 100x with 
>> no noticable effect. Do I have to change something in Bind, too? Or am I 
>>  completely wrong?
> 
> I'd say your biggest problem is the 214 million packet receive errors!
> Find the source of those errors, and you'll likely take care of your
> problem.  Your machine is tossing 1 out of every 4 or 5 packets!
> 

I've tried to 'watch' these errors and they seem to be bind-related - 
after the service is restarted, these errors stop to occur for some 
time. I thought that the cause is small udp receive buffer, but I'm not 
a network specialist - do you think it is/may be caused by something else?

Thanks!

-- 
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Pavel Urban (pavel.urban at imaginet.cz)
IOL system disaster
Internet OnLine, owned by Cesky Telecom, a.s. (www.ct.cz)
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    Vegetables should not operate electronic equipment.
           Computer Stupidities, http://rinkworks.com/stupid/
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