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2013-11-22 George Neville-Neil <gnn@neville-neil.com>, Wojciech Owczarek <wojciech@owczarek.co.uk>
* 2.3.0 release
* New Features:
- IEEE 802.3 Support
- Support for reading from the Berkeley Packet Filter, resulting in lower jitter
- Configuration file support, multiple previously unsupported options
- Rewritten command line parameter handling, new parameters
- Command line options to print default configuration, print lock file, check configuration and more,
- Full help (-H) for all configuration options,
- Configuration reload support with SIGHUP,
- Rewritten logging subsystem,
- Separate log file and statistics file, SIGHUP reprints the headers
- Support for mode and interface specific lock files
- Network interface checks before startup and during config reload
- Added ./configure --sigusr2=counters - will dump PTP engine countersto current log target when SIGUSR2 received
- Support for presets - groups of PTP protocol options defining ptpd behaviour
presets available: slaveonly, masteronly, masterslave
- Support for tick adjustment as well as frequency
maximum frequency offset is now configurable and can be above 512 ppm - tick is used above 512 ppm,
- Added a compatibility option to always honour the UTC offset announced by a GM when in slave state
- Added an announce receipt timeout "grace period" for slave state
slave can wait n times timeout without fully resetting
allows a seamless failover without resetting delay values etc.,
- Added support for DELAY_DISABLED delay mode - syntonisation only
- Initial support for informing the clock subsystem about the sync status
STA_UNSYNC is unset when adjusting the clock (allows syncing hardware RTC clocks with the system clock)
also maxerror and esterror are set,
- Support for RTC clock control on Linux
- Support for legacy command line switches from previous versions
- Configurable log level for normal logs, not only debug logs.
- Generic log file handler mechanism with a simple built-in logrotate implementation
for each log file container you can specify max size and max number of files
- Extensive support for realtime statistics
online long term statistics and moving statistics
mean and std dev.
Some new features included depend on statistics support, enabled with the --enable-statistics
configure switch. Statistics rely on double precision so may be disabled for simple embedded systems
- Outlier filters based on Peirce's criterion
blocks / filters spikes from delayMS and delaySM
- Generic PI controler model
- P and I components changed from attenuations to gains
- Double precision servo allows for tighter clock control
- Clock stabilisation detection based on the standard dev of observed drift
- Clock "calibration delay"
allows a configurable delay between seeing a GM for the first time and enabling clock control
- Realtime statistics - mean and std dev of one-way delay, ofm and observed drift
- Status file: one-screen dump of information about the current state of ptpd, updated in configurable intervals.
- Support for "panic mode"
if ptpd sees offset from master above 1 second, it will pause clock updates for a given amount of time
- NTPd integration and failover
ptpd can now connect to local ntpd using mode 7 packets (code derived from ntpdc)
and using authenticated requests can enable/disable ntpd clock control.
Enable with configure --enable-ntpdc
- Dump counters + clear counters using a SIGUSR2 handler to dump all counters to the log file
configure --enable-sigusr2=counters
- Support for ACLs for management and timing messages
- Basic support for SO_TIMESTAMPING (RX, TX) on Linux
- Support for non-Ethernet interfaces on Linux (Infiniband, GRE etc.)
- Support for offset / delay asymmetry correction
- Ptpd can now prefer or require GMs with valid UTC time
- Support for setting IP DSCP values
- Periodic IGMP joins also in master mode - improved robustness against network port failures
- Support for binding PTPd to a CPU core
- Control over tick rate on Linux, allowing faster clock slewing if needed
* Bug fixes:
- TTL no longer defaults to 64 in P2P mode - in P2P it's set to 1,
- Fixed an issue whereby observed drift would be reset to 0 if it
could not be read from the drift file (empty or nonexistent drift file),
now the kernel value is used if read from file fails.
- Support for updating utmp/wtmp when stepping the clock (FR #38)
- Mean Path Delay filtering now done in float (patch #49)
- Multiple other SourceForge bugs closed: Bugs closed:
#25, #34, #26, #42, #39, #33, #46, #45, #28,
#27, #48, #54, #47, #40, #37, #53, #50, #52, #59, #60
* Cleanups and other changes:
- Major startup.c cleanup, removed the parallel daemon checks,
in favour of better lock handling and the automatic lock file
name support,
- Some minor refactoring,
- Added a TimePropertiesDS structure and removed its fields
from PtpClock
- Improved log file format with full date and interface name,
removed the "===" indents
- Delay Request interval no longer mandatory in hybrid mode,
but a warning will be issued if it's not explicitly defined -
default of 0 is used,
- Removed the experimental status of hybrid mode,
- Manual stepping of the clock no longer just resets the observed
drift: resets it or restores it based on the drift handling setting,
and sets the time immediately before writing any logs - this allows
to re-sync and stabilise time almost instantly
- Up to date man pages written
2012-06-20 George Neville-Neil <gnn@neville-neil.com>
* 2.2.2 release
* Leap second fix
2012-01-05 George Neville-Neil <gnn@neville-neil.com>
* 2.2.0 release
* Patches: 3134556, 3296405
* Added support for Mac OS X (tested on Snow Leopard and Lion)
* Protocol implementation Fixes:
* Bugs Fixed
- Client now correctly accepts the Master DelayReq rate
- DelayMS and delaySM now correctly show the sign when negative
- Sanity Flags: client now requires -g or -G for slave/master operation.
- Client can print the MAC address of its master (instead of EEUI)
- master now sends ARB timescale only with utc_offset of zero
- slave now only uses the last UTC_Offset if UTC_Valid bit is on.
- passive masters no longer become active every 12s,
- first delayreq is postponed until we receive the first sync
- -G (master with ntpd) now announces a better clock class of 13
- delayReq period is now uniformly randomized from range
- updated to the PTPv2 messages rates (sync / delayreq / announce )
- operator is warned once when the we slew the clock at maximum speed
- and several others too minor too mention
* System fixes and new features
- Frequency adjustment is now calculated in double precision
- Kernel timestamps are now in nanoseconds precision
- Timer system overhead was reduced to 16 alarms per second (was 1000)
- each reset now generates an IGMP leave/join operation to
the multicast group
- Log file is now appended, with the right permissions
- Debug messages show a timestamp
- Signals are now processed synchronously (to avoid race conditions)
- Configurable amount of logging (to avoid filling up /var/log)
- client now checks own filelock, $0 and well-known daemons.
- unicast messages can use DNS
- syslog support (-S)
- quality file can be generated with received syncs (-R)
- messages can be dumped for debug (-P)
- gnore packets that result in large deltas (-M)
- SIGUSR1 now steps the clock to the current PTP offset
- SIGUSR2 now cycles the domain number (useful for testing)
- reverted R135 timer change from integer back to floating point
- rand() is now seeded with last digits of our own mac address
- IGMP_refresh waits 100ms between drop() and add()
- checked to run without leaks inside valgrind 3.5.0
- last message received is identified by a column on the statistics log
- messages are sent to Syslog by default. reversed -S flag
- statistcs file now display /etc/ethers names (besides mac address)
- option -C is console mode with full verbosity
- startup warnings are also duplicated in stdout
- startup: lockfile is checked twice: once at init, to return
correct errorlevel, and a second time after deaemon()
- check for root uid()
- improvements in parallel daemons checking
- command line parameters are dumped at init
- Set the unicast flag when sending unicast packets
(experimental, hybrid mode only).
- Reimplemented integer64_to_internalTime not to use doubles
- Replaced divTime by div2Time
- Replaced all time.seconds = time.nanoseconds = 0 by clearTime(&time)
- Replaced all hex values by named flags
- Optimized comparison of clockIdentity in bmc.c
- Resolved issue of comparison of offsetScaledLogVariance
- Optimized bmcStateDecision not to call bmcDataSetComparison so often with the same parameters
- displayStats now uses getTime instead of gettimeofday
2011-02-01 George Neville-Neil <gnn@neville-neil.com>
* Add support for DNS lookup of timeserver for unicast.
* Add support for unicasting delay requests.
* Add code to dump packets on demand via the -P flag as well as in
response to updates that violate either the -M or -O flags.
2010-10-12 George Neville-Neil <gnn@neville-neil.com>
* 2.1.0 First main line release of PTPv2 code base
(IEEE-1588-2008)
* Add code to limit how much of an offset or delay the client is
willing to tolerate.
* Add support for BINTIME on FreeBSD which gives more accurate
packet timestamps.
* Add quality file support
* Fix significant bugs that prevented correct operation in
End-to-End mode.
* Add support for syslog.
* Add support for user configurable TTL.
* Clean up code formatting, headers, comments etc.
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