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chrony is an implementation of the Network Time Protocol (NTP). It is an alternative to ntpd, a reference implementation of NTP. It runs on Unix-like operating systems (including Linux and macOS) and is released under the GNU GPL v2. [4]
The current version of SNTPv4 was merged into the main NTPv4 standard in 2010. [5] SNTP is fully interoperable with NTP since it does not define a new protocol. [ 29 ] : §14 However, the simple algorithms provide times of reduced accuracy and thus it is inadvisable to sync time from an SNTP source.
Mellanox SN2100 / SN2700 (Spectrum silicon) switches with MLNX-OS/ONYX (in GA since 3.6.5011) for PTP IEEE-1588 (SMPTE ST2059-2 profile) [42] or with Cumulus Linux (from version 3.6) with the ptp4l Linux package. [43] Moxa PowerTrans series (PT-7728-PTP) and EDS-500 and EDS-600 series switches; Oregano Systems syn1588 Gbit Switch [44]
The ntpd program is an operating-system daemon that sets and maintains a computer system's system time in synchronization with Internet-standard time servers.It is a complete implementation of the Network Time Protocol (NTP) version 4, but retains compatibility with versions 1, 2, and 3 as defined by RFC 1059, RFC 1119, and RFC 1305, respectively. ntpd performs most computations in 64-bit ...
Remmina is in the package repositories for Debian versions 6 (Squeeze) and later and for Ubuntu versions since 10.04 (Lucid Lynx). [6] [7] As of 11.04 (Natty Narwhal), it replaced tsclient as Ubuntu's default remote desktop client. [8] [9] The FreeBSD ports/package collection also contains it as a separate port and additional protocol-specific ...
The OpenNTPD project acknowledged the criticism, but stated that the lack of microsecond precision was a design tradeoff that benefited simplicity and security. [10] The OpenNTPD design goals state the project's intent is to "[r]each a reasonable accuracy" without sacrificing "secure design for getting that last nanosecond or obscure edge case."
Starting with Ruby version 1.9.2 (released on 18 August 2010), the bug with year 2038 is fixed, [16] by storing time in a signed 64-bit integer on systems with 32-bit time_t. [ 17 ] Starting with NetBSD version 6.0 (released in October 2012), the NetBSD operating system uses a 64-bit time_t for both 32-bit and 64-bit architectures.
The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide. The machines that are "in the pool" are part of the pool.ntp.org domain as well as of several subdomains divided by geographical zone and are distributed to NTP clients via round-robin DNS.