On Mon, Feb 15, 2016 at 02:16:13PM +0530, Sujatha Guguloth wrote: > In Failire case (Logs provided below) > - slave clock is taking 340 - 278 = 62 seconds for stabilization > - jitter is maintained below 100ns after stabilization but it is very very > high compared to previous case during the stabilization stage
It looks like the initial step is off by one second for some reason. It could be a driver issue. What HW and kernel version do you use? As a workaround you could try setting step_threshold to 0.1 for example and allow ptp4l to correct that one second error by stepping instead of slewing. > *Failure Logs:* > ptp4l[270.981]: selected /dev/ptp0 as PTP clock > ptp4l[271.014]: driver changed our HWTSTAMP options > ptp4l[271.020]: tx_type 1 not 1 > ptp4l[271.024]: rx_filter 1 not 12 > ptp4l[271.028]: port 1: INITIALIZING to LISTENING on INITIALIZE > ptp4l[271.040]: port 0: INITIALIZING to LISTENING on INITIALIZE > ptp4l[272.323]: port 1: new foreign master 001ec0.fffe.8614b5-1 > ptp4l[276.323]: selected best master clock 001ec0.fffe.8614b5 > ptp4l[276.328]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE > ptp4l[278.496]: master offset -1475113437970290 s0 freq +0 path delay > 7176 > ptp4l[279.496]: master offset -1475113437987402 s1 freq -17112 path delay > 7176 > ptp4l[280.496]: master offset -1000000284 s2 freq -32767999 path delay > 7176 > ptp4l[280.501]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED > ptp4l[281.501]: master offset -967516976 s2 freq -32767999 path delay -- Miroslav Lichvar ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
