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More complete synchronization systems, although lacking NTP's data analysis and clock disciplining algorithms, include the Unix daemon timed, which uses an election algorithm to appoint a server for all the clients; [19] and the Digital Time Synchronization Service (DTSS), which uses a hierarchy of servers similar to the NTP stratum model.
OpenNTPD (also known as OpenBSD NTP Daemon) is a Unix daemon implementing the Network Time Protocol to synchronize the local clock of a computer system with remote NTP servers. It is also able to act as an NTP server to NTP-compatible clients. OpenBSD NTP Daemon was initially developed by Alexander Guy and Henning Brauer as part of the OpenBSD ...
The most used clock synchronization solution on the Internet is the Network Time Protocol (NTP) which is a layered client-server architecture based on User Datagram Protocol (UDP) message passing. Lamport timestamps and vector clocks are concepts of the logical clock in distributed computing.
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 ...
UTC (variant depends on server's time source) ClockWatch Pro for Windows [22] Time Protocol Network Time Protocol: pool.ntp.org: Computer with NTP client that syncs at least once an hour. ntpd, sntp, ntpdate: Meinberg NTP [23] NetTime [24] ToyNTP [16] BktTimeSync by IZ2BKT [17] NTPSec Precision Time Protocol: Domain Time II [25] NIST Telephone ...
Open Time Server : 1GbE, Rubidium IEEE 1588 PTP, NTP, SyncE, PPS GNSS grandmaster clock from Timebeat.app [72] Open Time Server : 10/25GbE, Rubidium IEEE 1588 PTP, NTP, SyncE, PPS GNSS grandmaster clock from Timebeat.app [73] Open Timecard : PCIe card OCXO IEEE 1588 PTP, NTP, SyncE, PPS GNSS grandmaster clock from Timebeat.app [74]
The time server may be a local network time server or an internet time server. The most important and widely used protocol for distributing and synchronising time over the Internet is the Network Time Protocol (NTP), though other less-popular or outdated time protocols continue in use. A variety of protocols are in common use for sending time ...
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] It is the default NTP client and server in Red Hat Enterprise Linux 8 and SUSE Linux Enterprise Server 15, [5] [6] and available in many Linux distributions. [7] [8] [9]