From: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
yonatanc <yonatanc-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH rdma-next 1/2] IB/rxe: Offload CRC calculation when possible
Date: Mon, 24 Apr 2017 12:19:27 -0400 [thread overview]
Message-ID: <1493050767.3041.40.camel@redhat.com> (raw)
In-Reply-To: <20170420175556.8573-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
On Thu, 2017-04-20 at 20:55 +0300, Leon Romanovsky wrote:
> From: yonatanc <yonatanc-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
>
> Use CPU ability to perform CRC calculations, by
> replacing direct calls to crc32_le() with crypto_shash_updata().
>
> The overall performance gain measured with ib_send_bw tool is 10% and
> it
> was tested on "Intel CPU ES-2660 v2 @ 2.20Ghz" CPU.
>
> ib_send_bw -d rxe0 -x 1 -n 9000 -e -s $((1024 * 1024 )) -l 100
>
> -------------------------------------------------------------------
> --------------------------
> | | bytes | iterations | BW peak[MB/sec] | BW
> average[MB/sec] | MsgRate[Mpps] |
> -------------------------------------------------------------------
> --------------------------
> | crc32_le | 1048576 | 9000 | inf |
> 497.60 | 0.000498 |
> | CRC offload | 1048576 | 9000 | inf |
> 546.70 | 0.000547 |
> -------------------------------------------------------------------
> --------------------------
>
> Fixes: 8700e3e7c485 ("Soft RoCE driver")
> Signed-off-by: Yonatan Cohen <yonatanc-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
> Signed-off-by: Leon Romanovsky <leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Series applied, thanks.
--
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
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prev parent reply other threads:[~2017-04-24 16:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-20 17:55 [PATCH rdma-next 1/2] IB/rxe: Offload CRC calculation when possible Leon Romanovsky
[not found] ` <20170420175556.8573-1-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2017-04-20 17:55 ` [PATCH rdma-next 2/2] IB/rxe: Cache dst in QP instead of getting it for each send Leon Romanovsky
[not found] ` <20170420175556.8573-2-leon-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2017-04-20 18:01 ` Jason Gunthorpe
[not found] ` <20170420180114.GA6763-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-04-20 18:43 ` Leon Romanovsky
2017-04-23 7:00 ` Moni Shoua
2017-04-20 19:28 ` Steve Wise
2017-04-24 16:19 ` Doug Ledford [this message]
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