Re: Au1550 ethernet throughput low

[jaypee@hotpop.com]

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> I've got a au1550 board based largely on the pb1550. The ethernet
> throughput is ~66Mbps using the 2.6 kernel. This also consumes a
> lot of cpu cycles to send.

I put a test into YAMON and I can get full line rate out no problem.

I think this narrows it down to a problem with the kernel or my port
of it.

The actual au1000_eth driver doesn't do much work other than copy a  
packet into cache aligned buffer. It must be more to do with the  
scheduling of sending a new packet. tx_ack.

The kernel I'm using is a snapshot linux-mips CVS of 2.6.11-rc5.
Can anyone tell me if there improvements/fixes to this area since then?

Clem sent me the output of a test. In which he is getting 11MBs
I'm assuming the B is bytes in which case that is as near line rate as
dammit.

Clem you said were using 2.6.11 was that a kernel.org kernel or one
from linux-mips.org?

thnks for running the test clem.


- -- 
JP
mailto:jaypee@hotpop.com
http://www.jaypee.org.uk
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