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From: "Zhang, Qi Z" <qi.z.zhang@intel.com>
To: "Su, Simei" <simei.su@intel.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	"Van Haaren, Harry" <harry.van.haaren@intel.com>,
	"Wu, Wenjun1" <wenjun1.wu@intel.com>
Subject: Re: [dpdk-dev] [PATCH v4] net/ice: fix performance issue for Rx timestamp
Date: Mon, 1 Nov 2021 01:20:31 +0000	[thread overview]
Message-ID: <964e92194d8f4c629e2e66feb1004201@intel.com> (raw)
In-Reply-To: <20211029125603.92371-1-simei.su@intel.com>



> -----Original Message-----
> From: Su, Simei <simei.su@intel.com>
> Sent: Friday, October 29, 2021 8:56 PM
> To: Zhang, Qi Z <qi.z.zhang@intel.com>
> Cc: dev@dpdk.org; Van Haaren, Harry <harry.van.haaren@intel.com>; Wu,
> Wenjun1 <wenjun1.wu@intel.com>; Su, Simei <simei.su@intel.com>
> Subject: [PATCH v4] net/ice: fix performance issue for Rx timestamp
> 
> In Rx data path, it reads hardware registers per packet, resulting in big
> performance drop. This patch improves performance from two aspects:
> (1) replace per packet hardware register read by per burst.
> (2) reduce hardware register read time from 3 to 2 when the low value of
>     time is not close to overflow.
> 
> Meanwhile, this patch refines "ice_timesync_read_rx_timestamp" and
> "ice_timesync_read_tx_timestamp" API in which
> "ice_tstamp_convert_32b_64b"
> is also used.
> 
> Fixes: 953e74e6b73a ("net/ice: enable Rx timestamp on flex descriptor")
> Fixes: 646dcbe6c701 ("net/ice: support IEEE 1588 PTP")
> 
> Suggested-by: Harry van Haaren <harry.van.haaren@intel.com>
> Signed-off-by: Simei Su <simei.su@intel.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi



      reply	other threads:[~2021-11-01  1:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-28  7:58 [dpdk-dev] [PATCH] net/ice: fix performance issue for Rx timestamp Simei Su
2021-10-28  8:49 ` Zhang, Qi Z
2021-10-28 14:42 ` [dpdk-dev] [PATCH v2] " Simei Su
2021-10-29  2:24   ` Zhang, Qi Z
2021-10-29 10:15   ` [dpdk-dev] [PATCH v3] " Simei Su
2021-10-29 12:56     ` [dpdk-dev] [PATCH v4] " Simei Su
2021-11-01  1:20       ` Zhang, Qi Z [this message]

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