RE: Re: Re: Fast Inserts and Hardware Questions

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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