Re: [PATCH 0/3] Optimize CRC32C calculation using PCLMULQDQ in crc32c-intel module

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
Date: Tue, 25 Sep 2012 14:50:08 -0700

> This patch series optimized CRC32C calculations with PCLMULQDQ
> instruction for crc32c-intel module.  It speeds up the original
> implementation by 1.6x for 1K buffer and by 3x for buffer 4k or
> more.  The tcrypt module was enhanced for doing speed test
> on crc32c calculations.
> 
> Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>

Great work.

I intend to do something nearly identical on sparc64 since we have
similar instructions in the form of "xmulx" and "xmulxhi" which return
the lower and upper 64-bits (respectively) of a XOR multiply.

--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Kernel]     [Gnu Classpath]     [Gnu Crypto]     [DM Crypt]     [Netfilter]     [Bugtraq]

  Powered by Linux