RE: Command Queue Depth (was asymmetric/Symmetric)

[Robert Snively <rsnively@Brocade.COM>]

Memory to memory time can be significant fractions of a second,
depending on the stack implementation and connection path.  Present
disk drives routinely exceed 200 IO operations/second and a RAID
box with less than 50 or so drives is considered small.  The 
implication is that command queues will grow into the small 
numbers of thousands relatively routinely, if full random access throughput 
is to be maintained.

Bob

>  -----Original Message-----
>  From: Scott Bradner [mailto:sob@harvard.edu]
>  Sent: Friday, September 08, 2000 4:15 AM
>  To: matt_wakeley@agilent.com
>  Cc: ips@ece.cmu.edu
>  Subject: Re: Command Queue Depth (was asymmetric/Symmetric)
>  
>  
>  > I don't know what the
>  > latency through ethernet switches is, but I'd hope it 
>  wasn't in the ms range.
>  
>  processing time is in the 10 to 50 microsecond range
>  
>  
>  Scott
>