UDP packet loss

[Pavel Urban]

JINMEI Tatuya / ???? wrote:
>>>>>> On Thu, 08 Jun 2006 16:01:18 +0200, 
>>>>>> Pavel Urban <urbanp at mlp.cz> said:
> 
>> 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?
> 
>> RedHat Linux ES release 4, 2.6.9-34.ELsmp kernel, dual Opteron system 
>> with 6GB ram, no local zones, just resolver/cache. bind-9.3.2-2_EL4
> 
> A quick question: did you enable threads?
> 

As far as I know, RedHat's packages are compiled with threads enabled. 
This server is quite busy, about 4MBit of DNS traffic for hours...


-- 
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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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