What's new in linuxptp 1.6
Sep 21, 2015
- Support for the hybrid unicast/multicast delay mechanism from the draft Enterprise Profile.
- Modular time stamp processing including a mode for jittery networks.
New in linuxptp 1.5 (Jan 5, 2015)
- Adaptive servo based on linear regression.
- Automatic configuration for the phc2sys program.
- Event subscribing and notification.
- Improved transmit time stamp performance.
- Leap second and TAI offset handling.
- New phc_ctl and timemaster utility programs.
- Peer delay calculation adjustment using neighborRateRatio.
- Poor man's Boundary Clock using a heterogeneous set of devices.
- Servo for NTP SHM reference clock.
New in linuxptp 1.4 (Feb 19, 2014)
- Median filter on the delay estimates
- Improved gPTP support, including the gmCapable flag
- Various minor corrections to the protocol handling
- Multiple ptp4l instances can each have their own unix domain socket
- Better run time error checks and messages
- Expanded compile time error checking
- Documentation enhancements
New in linuxptp 1.3 (Aug 3, 2013)
- Automatic adjustment of PI servo constants according to sync interval.
- Fix bug in unlucky sync/follow up handling.
- Improved grand master support.
- New servo option which specifies first step threshold.
- Stricter configuration value validation.
- Support management messages according to IEEE 1588 interpretation #29.
- Use a dynamic frequency estimation interval.
- Numerous documentation improvements and small bug fixes.
New in linuxptp 1.2 (Apr 23, 2013)
- Automatically enabled PPS output from a PTP Hardware Clock.
- CLOCK_DESCRIPTION and USER_DESCRIPTION management messages.
- Fixed message alignment for armv5 machines.
- Leap second handling.
- More reliable transmit time stamps.
- Support multiple fault types.
New in linuxptp 1.1 (Feb 20, 2013)
- Added "asCapable" logic according to 802.1AS.
- Better responses to management message errors.
- Corrected the peer delay message timer for P2P mode.
- Fixed bugs in TLV handling.
- Improved servo start up performance.
- New logging option to show synchronization summary.
- Numerous improvements to the phc2sys program.