Lousy Network Performance

[Net Llama!]

On 06/28/2005 09:03 PM, Kurt Wall wrote:
> On Tue, Jun 28, 2005 at 02:29:43PM +1000, James McDonald took 0 lines to write:
>> On Mon, Jun 27, 2005 at 10:56:34PM -0400, Kurt Wall wrote:
>> > Hi, list,
> 
> [crappy latency]
> 
>> If you are using a crossover cable check your duplex settings. I have
>> found performance gains by either enabling/disabling duplex.
> 
> $ dmesg | grep dup
> eth0: Setting full-duplex based on MII#1 link partner capability of 45e1.
> eth1: Setting full-duplex based on MII#1 link partner capability of 41e1.
> 
> I can try half-duplex when I get home, but why that should speed things
> up eludes me.
> 
>> Use a tool like ttcp to push raw packets back and forwards... You
>> should be getting around 100Mbps.
>> 
>> As a matter of interest what are the cards? and what kernel module do
>> they use?
> 
> I tried swapping cards and still have marginal performance. The current
> cards are 
> 
> 00:0d.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
> 00:0f.0 Ethernet controller: 3Com Corporation 3c905B 100BaseTX [Cyclone] (rev 30)

Are either of the cards sharing IRQs with anything else?

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
L. Friedman                       	       netllama at linux-sxs.org
LlamaLand		 		http://netllama.linux-sxs.org

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