From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: which CPU for XOR?
Date: Fri, 9 Jun 2006 13:22:57 -0700 (PDT)
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References: <200606091349.24109.Dexter.Filmore@gmx.de>
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Followup to:  <200606091349.24109.Dexter.Filmore@gmx.de>
By author:    Dexter Filmore <Dexter.Filmore@gmx.de>
In newsgroup: linux.dev.raid
>
> What type of operation is XOR anyway? Should be ALU, right?
> So - what CPU is best for software raid? One with high integer processing 
> power? 
> 

Something with massive wide vector registers.

PowerPC with Altivec totally kicks ass; x86-64 isn't too bad either.

There are also some processors with builtin RAID accelerators; at
least Intel, Broadcom and AMCC make them.

	-hpa