[SLE] Network card + CPU load

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To: suse-linux-e@suse.com
Date: Mon, 31 Jan 2005 09:49:17 +0200

Hi everybody,

I have noticed that on my workstation (P-III 1ghz, 512mb, Intel chipset,
100mbit 3com network), I can copy stuff over the network at about 8-9mb/s at
the best of times. When I do this, my CPU usage is quite high.

I notice the same thing on my home PC (2ghz Athlon, 384mb, Via chipset, SMC
network card - tulip driver). On both these machines the CPU load seems to
be directly proportional to the transfer rate on the network interface.

I can only assume that his is because both these cards do a lot of the hard
work in software, in the driver. Can anyone confirm/deny/explain this?

Either ways, our office would be migrating to a gigabit network soon, and I'm
tasked with finding good network cards. Can anyone recommend a gigabit
network chipset that fully implemented in hardware - i.e. the network card
itself does all the heavy lifting. I'm looking for someting that would
affect the CPU usage as little as possible.

Thank you

-- 
Kind regards
Hans du Plooy
Newington Consulting Services
hansdp at newingtoncs dot co dot za
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