Yes, disable it adding "nohz=off" at kernel command line and you can see the difference. Phc2sys will report more stable and very low delay (I see hundreds of nanoseconds on my platforms)
-----Original Message----- From: Koehrer Mathias (ETAS/ESW5) [mailto:[email protected]] Sent: 19 February 2014 15:08 To: Richard Cochran Cc: [email protected] Subject: Re: [Linuxptp-users] Status file of achieved time synchronization Hi Richard! > BTW, in case you did not see the recent discussion about it, you > should know that the Linux kernel option CONFIG_NO_HZ_IDLE is harmful > to your use case. I recommend to either disable this at compile time > or to add "nohz=off" to your kernel command line. Thanks for the hint. With my kernel 3.2 there is no config option CONFIG_NO_HZ_IDLE. I have only "CONFIG_NO_HZ". Is this also harmful? Regards Mathias ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121054471&iu=/4140/ostg.clktrk _______________________________________________ Linuxptp-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linuxptp-users
