GEOM Gate.

[Dan Nelson]

In the last episode (Aug 17), Pawel Jakub Dawidek said:
> On Fri, Aug 15, 2003 at 11:53:11AM -0400, Robert Watson wrote:
> +> That said, I think the geom gate stuff looks very cool :-).  You
> +> might be able to run some interesting performance numbers
> +> comparing NFS and UFS over a remote block device.
> 
> Ok. After last geom gate optimizations I'm ready to show some tests.
> 
> NFS read:	2539890 bytes/sec
> NFS write:	2668428 bytes/sec
> 
> GG read file:	5791796 bytes/sec (file was exported)
> GG write file:	4071411 bytes/sec (file was exported)
> 
> GG read device:	4635277 bytes/sec (disk device was exported)
> GG write device: I wasn't able to test

What kind of hardware were you using?  2.5MB/sec NFS sounds abysmal. 
You should be able to saturate a 100mbit link with anything made in the
last 5 years.  The slowest machine I have it a P6/200 with FreeBSD 4.1
and this disk:

ad0: 3067MB <QUANTUM FIREBALL_TM3200A> [6232/16/63] at ata0-master using WDMA2

, which does 7MB/sec raw, can feed a NFS client doing a file read at
5MB/sec.

-- 
	Dan Nelson
	dnelson at allantgroup.com