Re: File Systems Compared

Luke Lonergan wrote:

>Brian,
>
>On 12/6/06 8:02 AM, "Brian Hurt" <bhurt@janestcapital.com> wrote:
>
>  
>
>>These numbers are close enough to bus-saturation rates
>>    
>>
>
>PCIX is 1GB/s + and the memory architecture is 20GB/s+, though each CPU is
>likely to obtain only 2-3GB/s.
>
>We routinely achieve 1GB/s I/O rate on two 3Ware adapters and 2GB/s on the
>Sun X4500 with ZFS.
>
>  
>
For some reason I'd got it stuck in my head that PCI-Express maxed out 
at a theoretical 533 MByte/sec- at which point, getting 480 MByte/sec 
across it is pretty dang good.  But actually looking things up, I see 
that PCI-Express has a theoretical 8 Gbit/sec, or about 800Mbyte/sec.  
It's PCI-X that's 533 MByte/sec.  So there's still some headroom 
available there.

Brian