[rescue] Gigabit Ethernet SBus & Gigabit Ethernet Sun 420R/220R

Joshua Boyd jdboyd at jdboyd.net
Sun Apr 6 13:03:25 CDT 2008

On Apr 6, 2008, at 11:19 AM, Jonathan Katz wrote:

> On Apr 6, 2008, at 10:46 AM, Phil Stracchino wrote:
>> It's megabits, remember, not megabytes.
>> I have gotten an honest 97Mbit/s data rate across my local 100Mbit  
>> network.  That's about 12 MB/s.  If GigE can manage 900Mbit/s  
>> actual throughput, that's 112MB/s.  So if SBUS tops out at 200MB/ 
>> s, it should take GigE traffic just fine.  If that's 200Mbit/s,  
>> then GigE on SBUS isn't going to work too well.  :)
> I feel like a broken record. I know I've posted this story 2x  
> before :D
> Back in 1997 I was a contractor at Alteon networks. We had Tatung  
> Ultra 2 clones with the 336Mhz(?) CPUs in them. They were sbus  
> systems. With the sbus gigabit cards using 8k frames (jumbo frames)  
> and ttcp we could hard-lock the systems and managed to get 800Mbits  
> of throughput. This was back in the Solaris 2.5.1 days with 32bit  
> kernels, too, and rev 1.x drivers.

What did you get in real usage outside of a benchmarking program though?

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