Re: [RFC PATCH] crypto: crc32c-pclmul - Use pmovzxdq to shrink K_table

From: Tim Chen
Date: Fri May 30 2014 - 12:10:54 EST


On Fri, 2014-05-30 at 01:25 -0400, George Spelvin wrote:

>
> Averaging the 8K bytes per update, I do see an average of 3.2 cycles per
> operation (that is, per 8K of data processed) lost, or about 1 cycle per
> (3K or less) block processed. I'm hoping the reduced D-cache polution
> makes it up somewhere else.

That's very small (less than 0.2%) so I think it's acceptable.

Tim


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