Subject: Re: udp receive buffer overflow with many small packets
To: Hubert Feyrer <hubert@feyrer.de>
From: Jason Thorpe <thorpej@shagadelic.org>
List: tech-net
Date: 04/21/2005 13:15:59
On Apr 21, 2005, at 5:49 AM, Hubert Feyrer wrote:

> On Thu, 21 Apr 2005, Stuart Brooks wrote:
>
>> I get exactly the same thing on Netbsd 2.0. If I send 170 packets,  
>> 164
>> get through and netstat -s shows 6 more udp packets dropped due to  
>> full
>> socket buffers. The packets are 88 bytes each, but increasing the  
>> size
>> (within reason) makes no difference. eg 200B/packet also yields an
>> overflow after 164 packets.
>>
>
> UDP... I think there was some checksum problem reported/discussed  
> lately,
> dunno if that's related. Can you try -current?

He said "dropped due to full socket buffer".

Stuart -- increase SO_RCVBUF.

-- thorpej