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From: Jim Kukunas <james.t.kukunas@linux.intel.com>
To: x86@kernel.org
Cc: hpa@zytor.com, neilb@suse.de, linux-kernel@vger.kernel.org,
	mingo@redhat.com, tglx@linutronix.de
Subject: arch/86: AVX RAID5 xor checksumming
Date: Tue, 10 Apr 2012 10:22:30 -0700	[thread overview]
Message-ID: <1334078551-6859-1-git-send-email-james.t.kukunas@linux.intel.com> (raw)

Hi Folks,

The following patch adds an AVX implementation of the RAID5 xor checksumming
functions.

Based on xor_speed, the AVX implementation appears to be ~32% faster than the
SSE implementation on my i7 2600:

        generic_sse: 15088.000 MB/sec
	avx: 19936.000 MB/sec

Thanks.


             reply	other threads:[~2012-04-10 17:22 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-10 17:22 Jim Kukunas [this message]
2012-04-10 17:22 ` [PATCH] raid5: add AVX optimized RAID5 checksumming Jim Kukunas
2012-04-10 17:37 ` arch/86: AVX RAID5 xor checksumming H. Peter Anvin
2012-04-10 20:14   ` NeilBrown
2012-04-10 21:20     ` H. Peter Anvin
2012-04-14 12:02       ` Ingo Molnar

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