linux-kernel - Re: [PATCH net-next v2 1/2] net: micrel: Change to receive timestamp in the frame for lan8841

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Message-ID: <ZIlK6QXuMYWpWkOJ@hoboy.vegasvil.org>
Date:   Tue, 13 Jun 2023 22:06:49 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        andrew@...n.ch, hkallweit1@...il.com, linux@...linux.org.uk,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Subject: Re: [PATCH net-next v2 1/2] net: micrel: Change to receive timestamp
 in the frame for lan8841

On Tue, Jun 13, 2023 at 11:45:25AM +0200, Horatiu Vultur wrote:
> Doing these changes to start to get the received timestamp in the
> reserved field of the header, will give a great CPU usage performance.
> Running ptp4l with logSyncInterval of -9 will give a ~50% CPU
> improvment.

One Sync every 1.95 milliseconds seems a bit excessive.
Just saying.

Thanks,
Richard