Re: Debian compatible fiber optic network cards
On Sat, April 30, 2011 03:25, Henrique de Moraes Holschuh wrote:
> On Fri, 29 Apr 2011, C.J. Adams-Collier KF7BMP wrote:
>> I'm sure there's something more recent that works just fine. I'd look
>> in to intel hardware. I've only been able to push about 300Mbit/s
>> through the devices. I have a feeling this has something to do with
>> linux's lack of support for jumbo frames on the 82542:
>>
>> http://www.erchi.com/hp_sides/oars/DISK1_CURRENT/ADVISORIES/SERVICE/EU020111_SW01.HTML
>
> Hmm, that thing is old and lacks a lot of the good stuff. It might well
> not
> be able to do linerate without jumbo packets unless your CPU is really
> fast
> (and multicore does not help much with these old MSI-X-challenged NIC
> chipsets).
>
> Intel gigabit NICs based on the 82576 just plain rock, and work well in
> Linux. You can easily find 1000BASE-SX and 1000BASE-LX NICs with those.
> It
> will do full-duplex line-rate without jumbo frames if your CPUs can manage
> to keep it busy.
>
Im currently running the 82599EB 10gig cards from Intel (2x SFP+) and they
push on quite nice without much trouble, I've managed to fill both inbound
and outbound (duplex) with very little tuning (txqueue/sysctls). Not that
expensive either.
--
//Timh
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