On linux the software raid will use the MMX instructions, can't these be
done in parrell to most other operations? Memory bandwidth may be the real
killer
--
Ian Willis
Systems Administrator
Division of Entomology CSIRO
GPO Box 1700
Canberra ACT 2601
ph 02 6246 4391
fax 02 6246 4000
-----Original Message-----
From: Steve Wolfe [mailto:steve@iboats.com]
Sent: Saturday, 17 March 2001 10:48 AM
To: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Re: Re: Fast Inserts and Hardware Questions
> It's not surprising to see software raid outperforming hardware raid (both
> of modern vintage).
That's provided, of course, that you have a good amount of free CPU
cycles. On machines that are otherwise heavily CPU-loaded, software raid
has been (in my experience) horrible.
steve
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