[ovs-dev] [PATCH v1 1/1] hash: Enable hash_bytes128 optimization for aarch64.

Ben Pfaff blp at ovn.org
Fri Feb 22 21:02:59 UTC 2019


On Mon, Feb 18, 2019 at 05:46:01AM +0000, Yanqin Wei (Arm Technology China) wrote:
> "hash_bytes128" has two versions for 64 bits and 32 bits system. This
> should be common optimization for their respective platforms.
> But 64 bits version was only enabled in x86-64. This patch enable it for
> aarch64 platform.
> Micro benchmarking test was run in two kinds of arm platform.  It was
> observed that 50% performance improvement in thunderX2 and 40%
> improvement in TaiShan(Cortex-A72).
> 
> Signed-off-by: Yanqin Wei <yanqin.wei at arm.com>

Thanks for working to make OVS better.

This patch is whitespace damaged.  For instance, lines that should begin
with spaces lack them.  I cannot apply it.

You can send the patch another way (for example, with "git send-email")
or use a Github pull request.


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