* [Xenomai] Request for support of SIOCSHWTSTAMP @ 2016-04-01 16:17 Varun Deshpande 2016-04-01 18:50 ` Gilles Chanteperdrix 0 siblings, 1 reply; 3+ messages in thread From: Varun Deshpande @ 2016-04-01 16:17 UTC (permalink / raw) To: xenomai Hello Folks, As Xenomai-RTnet has combined, it is the solution for many hard realtime systems but the main feature which is missing is SIOCSHWTSTAMP. As i210 supports harware timestamping, it is crucial for performance analysis. But it is not supported by rt_igb driver as SIOCSHWTSTAMP returns "OPERATION NOT SUPPORTED" I kindly request you guys to please incorporate this feature so that user can get hardware timestamp in cmsg header by enabling SIOCSHWTSTAMP option for rt_igb driver as many of the ptp, avb programs evaluation is done by hardware timestamp only. Best Regards Varun Deshpande Exchange Program Student, ESIEE Paris +33 760 349 859 Alma Mater Electronics & Communication Engineering, National Institute of Technology, Bhopal (INDIA) +91 8965 080 507 ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Xenomai] Request for support of SIOCSHWTSTAMP 2016-04-01 16:17 [Xenomai] Request for support of SIOCSHWTSTAMP Varun Deshpande @ 2016-04-01 18:50 ` Gilles Chanteperdrix 2016-04-01 20:09 ` Varun Deshpande 0 siblings, 1 reply; 3+ messages in thread From: Gilles Chanteperdrix @ 2016-04-01 18:50 UTC (permalink / raw) To: Varun Deshpande; +Cc: xenomai On Fri, Apr 01, 2016 at 06:17:38PM +0200, Varun Deshpande wrote: > Hello Folks, > > As Xenomai-RTnet has combined, it is the solution for many hard realtime > systems but the main feature which is missing is SIOCSHWTSTAMP. > As i210 supports harware timestamping, it is crucial for performance > analysis. But it is not supported by rt_igb driver as SIOCSHWTSTAMP returns > "OPERATION NOT SUPPORTED" > > I kindly request you guys to please incorporate this feature so that user > can get hardware timestamp in cmsg header by enabling SIOCSHWTSTAMP option > for rt_igb driver as many of the ptp, avb programs evaluation is done by > hardware timestamp only. Correct me if I am wrong, but to get meaningful hardware timestamps, you need the machines to be synchronized with PTP, so, there is much more work to get this working than just implement this ioctl. I think we should start small, with software timestamps, as with Xenomai low latencies, and the fact that determinism requires to not fill the hardware queues, you should have some good precision already. -- Gilles. https://click-hack.org ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Xenomai] Request for support of SIOCSHWTSTAMP 2016-04-01 18:50 ` Gilles Chanteperdrix @ 2016-04-01 20:09 ` Varun Deshpande 0 siblings, 0 replies; 3+ messages in thread From: Varun Deshpande @ 2016-04-01 20:09 UTC (permalink / raw) To: Gilles Chanteperdrix; +Cc: xenomai Hello Gilles Sir, This plan is great ! I wish Xenomai Project a great Success ! Best Regards Varun Deshpande Exchange Program Student, ESIEE Paris +33 760 349 859 Alma Mater Electronics & Communication Engineering, National Institute of Technology, Bhopal (INDIA) +91 8965 080 507 On Fri, Apr 1, 2016 at 8:50 PM, Gilles Chanteperdrix < gilles.chanteperdrix@xenomai.org> wrote: > On Fri, Apr 01, 2016 at 06:17:38PM +0200, Varun Deshpande wrote: > > Hello Folks, > > > > As Xenomai-RTnet has combined, it is the solution for many hard realtime > > systems but the main feature which is missing is SIOCSHWTSTAMP. > > As i210 supports harware timestamping, it is crucial for performance > > analysis. But it is not supported by rt_igb driver as SIOCSHWTSTAMP > returns > > "OPERATION NOT SUPPORTED" > > > > I kindly request you guys to please incorporate this feature so that user > > can get hardware timestamp in cmsg header by enabling SIOCSHWTSTAMP > option > > for rt_igb driver as many of the ptp, avb programs evaluation is done by > > hardware timestamp only. > > Correct me if I am wrong, but to get meaningful hardware timestamps, > you need the machines to be synchronized with PTP, so, there is much > more work to get this working than just implement this ioctl. I > think we should start small, with software timestamps, as with > Xenomai low latencies, and the fact that determinism requires to not > fill the hardware queues, you should have some good precision already. > > -- > Gilles. > https://click-hack.org > ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-04-01 20:09 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2016-04-01 16:17 [Xenomai] Request for support of SIOCSHWTSTAMP Varun Deshpande 2016-04-01 18:50 ` Gilles Chanteperdrix 2016-04-01 20:09 ` Varun Deshpande
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