[Xorp-hackers] Question on fea's use of sendmsg

[Ben Greear]

Pavlin Radoslavov wrote:
>> Also, I noticed that the sender socket had a large amount of packets
>> in it's rx buffer because nothing ever reads it.  I added code to set
>> it's rx buflen to only 8k, and I'm now adding logic to read & discard
>> those packets in case they are somehow jamming up the system due to
>> consuming too many kernel buffers.
> 
> FYI, there was a bug in the I/O code in the FEA: the size of the rx
> buflen was increased instead of the tx buflen for sockets used for
> transmission. The bug is now fixed in CVS.

Sounds good.  Did you also set the rx side to be very small?  I
have been setting it to 4000, though something smaller might work
as well.  Setting it to zero failed for reasons I never pursued.

Also, my main problem with losing sendmsg packets is resolved.  It was
due to some QoS configurations that a companion program was
doing.  I removed that, and the 30 node scenario *mostly* works
now.

I will be backing out my debugging hacks & hashing code and
merging with your latest CVS tree in a few minutes.

Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com