Re: some simple nfs-benchmarks on 5.4 RC2
From: Eric Anderson (anderson_at_centtech.com)
Date: 04/20/05
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Date: Wed, 20 Apr 2005 09:13:05 -0500 To: Claus Guttesen <kometen@gmail.com>
Claus Guttesen wrote:
>>That's about what I expected. RAID 5 depends on fast xor, so a slow processor
>>in a hardware RAID5 box will slow you down a lot.
>>
>>You should try taking the two RAID5's (6 disks each) created on your original
>>controller and striping those together (RAID 50) - this should get you some
>>better performance, probably not as close as the amr device, but I would guess
>>somewhere in the 80-90mb/s range.
>
>
> This can't be done in hardware, since atabeast only supports raid 0,
> 1, 4 and 5. But I will definitively have this in my mind this when we
> get a new storage-system (a different one).
>
> Thank you for your guidance.
You could use the atabeast to do two raid 5's, then use vinum to stripe those two.
Eric
-- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology A lost ounce of gold may be found, a lost moment of time never. ------------------------------------------------------------------------ _______________________________________________ freebsd-performance@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org"
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