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Date: Fri, 27 Jul 2007 13:34:32 -0400
From: Howard Goldstein <hg@queue.to>
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Subject: Re: [resolved,
	naively] Re: geom vs ich through ar device - benchmarks?
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Howard Goldstein wrote:
> 
>  ar device's RAID1                       Using the awesome gmirror
> write 1gb: 13.275                             13.7
> rd         12.9                               13.8

I recently had an opportunity to repeat this test with the same exact
WD3200AAKS (7200RPM consumer grade 320g sata II) drives on an older
hardware RAID card, the 3ware 8006-2LP plugged into a 32 bit PCI slot.
The results were surprisingly poor given that this card does the RAID in
hardware.  With RAID-1

Write 1gb:    24.3s
Read 1gb:     18.6


Using the same dd invocation as in the previous message, to a freshly
newfsd 10GB slice at the beginning of the drive.  The drives were
strapped to 150MB/S since the 8006 has issues with SATA-II and the
interface is nowhere near saturating anyway since the ultimate limit of
the head<>platter is reached well below 150MB/S

Sticking with gmirror/geom (thank you Pawel)

FYI...