Giganet vs. Myrinet vs. gigabit

Velocet math at velocet.ca
Thu Oct 18 12:53:51 EDT 2001


On Thu, Oct 18, 2001 at 12:25:14PM -0400, Greg Lindahl's all...
> On Thu, Oct 18, 2001 at 11:21:05AM -0400, Donald Becker wrote:
> 
> > Giganet is apparently being repositioned by Emulex as a niche product.
> > In an interesting move, Emulex is instead promoting a programmable
> > gigabit Ethernet adapter as a SCSI-over-IP host channel adapter.
> >     http://wwwip.emulex.com/ip/index.html
> 
> Before Giganet was purchased, they had already moved away form
> building hardware to instead building software that ran on normal gigE
> adapters. This Emulex thing is that product. Emulex would never have
> paid all that money for VIA hardware.
> 
> They claim to be able to do 1 Gb/s iSCSI transfers at less than 10%
> host CPU overhead. A conventional gigE driver eats what, 50% of the
> cpu?

Even the most efficient cards use 50%? This seems really high to me.
Arent there some good quality cards that offload a fair bit of the
processing to the card (with appropriate quality drivers) - intel eepro1000s
anygood? (They have a good reputation for fast ether cards in terms
of efficiency). Whats the most efficient GbE card?

/kc
-- 
Ken Chase, math at velocet.ca  *  Velocet Communications Inc.  *  Toronto, CANADA 


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