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Re: [PATCH] Using Intel CRC32 instruction to accelerate CRC32c algorithm by new crypto API.

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From: Chris Mason
Subject: Re: [PATCH] Using Intel CRC32 instruction to accelerate CRC32c algorithm by new crypto API.
Date: Monday, August 4, 2008 - 6:45 am

On Mon, 2008-08-04 at 11:45 +0100, David Woodhouse wrote:

Long term I'd like to switch btrfs to the crypto api, but right now I'm
using libcrc32c.

code wrong, but it looks like my choices are to either have a long
standing context and use locking around the digest/hash calls to protect
internal crypto state, or create a new context every time and take a
perf hit while crypto looks up the right module.

Either way it looks slower than just calling good old libcrc32c.

-chris

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Messages in current thread:
[PATCH] Using Intel CRC32 instruction to accelerate CRC32c ..., Austin Zhang, (Mon Aug 4, 2:35 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 3:12 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Sebastian Siewior, (Mon Aug 4, 3:25 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 3:27 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Austin Zhang, (Mon Aug 4, 3:35 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 3:45 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 3:48 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Austin Zhang, (Mon Aug 4, 3:58 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 4:25 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Chris Mason, (Mon Aug 4, 6:45 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:04 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 7:13 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:17 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:18 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:19 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Arjan van de Ven, (Mon Aug 4, 7:20 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., David Woodhouse, (Mon Aug 4, 7:49 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:54 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 8:12 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 8:42 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Chris Mason, (Mon Aug 4, 9:14 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 9:45 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Arjan van de Ven, (Mon Aug 4, 10:06 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 10:10 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 10:13 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Randy Dunlap, (Mon Aug 4, 10:27 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Benoit Boissinot, (Mon Aug 4, 11:02 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Mon Aug 4, 7:08 pm)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Austin Zhang, (Tue Aug 5, 2:51 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Austin Zhang, (Tue Aug 5, 2:59 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Austin Zhang, (Tue Aug 5, 3:12 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Tue Aug 5, 3:44 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Helge Hafting, (Tue Aug 5, 4:10 am)
Re: [PATCH] Using Intel CRC32 instruction to accelerate CR ..., Herbert Xu, (Tue Aug 5, 7:04 am)