Re: Looking for the cause of poor I/O performance

[David Greaves <david@dgreaves.com>]

I paid about £50 for a 5port gig switch
I have 3 e1000 cards (about £30 each) - they're relegated to doorstops 
I'm afraid :(
Despite months of trying they just won't work with my consumer VIA/AMD 
systems (and Ganesh and gang have tried)
I'm now using even cheaper Marvell based SMC EZ1000s (£20ish) - I doubt 
I'll get close to the throughput the e1000s could achieve - but I get 3 
times more then fast ethernet (and about 10 times more than e1000s) 
which is worthwhile.

David

Erik Mouw wrote:

>On Fri, Dec 03, 2004 at 06:30:51AM -0500, TJ wrote:
>  
>
>>I'm cheap. I use a crossover so I didn't have to spring for the switch. The 
>>NICs are Intel 82540EM's. I got them for around $55 per. I didn't think that 
>>was too bad for gigabit. Of course, these controllers may be complete trash, 
>>I dunno. 
>>    
>>
>
>You won't do any better than fast ethernet when you're using a
>crossover cable. Gigabit ethernet doesn't need crossover cables for
>direct connections, it uses all four wire pairs in cat5 cable and will
>automatically figure out if there's a direct connection and do the
>right thing (all mandatory by the gigE standard, so every NIC will
>support it). If you use a fast ethernet cross cable, the NICs will
>autonegotiate to 100 MB/s full-duplex.
>
>The Intel gigE NICs are very good: good hardware, good driver, good
>support. Gigabit ethernet switches are becoming rather cheap: 200 EUR
>buys you an 8 port switch.
>
>
>Erik
>
>  
>

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