From: "H. Peter Anvin" <hpa@zytor.com>
To: Jim Paris <jim@jtan.com>
Cc: Guy <bugzilla@watkins-home.com>,
'Neil Brown' <neilb@cse.unsw.edu.au>,
linux-raid@vger.kernel.org
Subject: Re: RAID-6: help wanted
Date: Fri, 29 Oct 2004 19:33:46 +0000 [thread overview]
Message-ID: <41829B1A.2000900@zytor.com> (raw)
In-Reply-To: <20041029192132.GA10079@jim.sh>
Jim Paris wrote:
>
> Why dynamic? Are there problems with just pregenerating all 256
> optimized codepaths?
>
Right, you could do that, of course, but it still amounts to 256 code
paths that have to be generated, a framework to do them with (since gcc
doesn't generate SSE-2 code properly, for example), and then figure out
if it was all worth it at the end.
Given that the RAID-6 module is already quite large, I'm not so sure
it's a win.
-hpa
next prev parent reply other threads:[~2004-10-29 19:33 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-23 23:46 RAID-6: help wanted H. Peter Anvin
2004-10-24 5:26 ` Brad Campbell
2004-10-24 6:46 ` Jim Paris
[not found] ` <417B546C.3050706@zytor.com>
2004-10-24 7:09 ` H. Peter Anvin
2004-10-24 7:17 ` H. Peter Anvin
2004-10-24 7:18 ` Brad Campbell
2004-10-25 5:41 ` Neil Brown
2004-10-25 6:20 ` Jim Paris
2004-10-25 6:24 ` Neil Brown
2004-10-25 6:33 ` Jim Paris
2004-10-25 14:23 ` H. Peter Anvin
2004-10-27 3:38 ` Neil Brown
2004-10-27 5:23 ` H. Peter Anvin
2004-10-27 6:00 ` Jim Paris
2004-10-27 6:03 ` H. Peter Anvin
2004-10-28 1:17 ` H. Peter Anvin
2004-10-28 16:00 ` Jim Paris
2004-10-28 17:48 ` H. Peter Anvin
2004-10-28 17:49 ` H. Peter Anvin
2004-10-29 0:43 ` Neil Brown
2004-10-29 11:48 ` Jim Paris
2004-10-29 12:56 ` Guy
2004-10-29 18:15 ` Jim Paris
2004-10-29 19:04 ` H. Peter Anvin
2004-10-29 19:21 ` Jim Paris
2004-10-29 19:33 ` H. Peter Anvin [this message]
2004-10-29 20:28 ` Guy
2004-10-29 20:32 ` H. Peter Anvin
2004-10-29 21:21 ` Guy
2004-10-29 21:33 ` H. Peter Anvin
2004-10-29 12:29 ` Guy
2004-10-27 5:56 ` H. Peter Anvin
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