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Uptime
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Uptime
Uptime is a measure of system reliability, expressed as the period of time a machine, typically a computer, has been continuously working and available. Uptime is the opposite of downtime.
It is often used as a measure of computer operating system reliability or stability, in that this time represents the time a computer can be left unattended without crashing or needing to be rebooted for administrative or maintenance purposes.
Conversely, long uptime may indicate negligence, because some critical updates can require reboots on some platforms.
In 2005, Novell reported a server with a 6-year uptime. This level of uptime is common when servers are maintained under an industrial context and host critical applications such as banking systems.
Netcraft maintains the uptime records for many thousands of web hosting computers.
A server running Novell NetWare has been reported to have been shut down after 16 years of uptime due to a failing hard disk.
Most Unix-like systems including Linux, FreeBSD, Mac OS X, and SySVr4 have the uptime command. It also displays the system load averages for the past 1, 5, and 15-minute intervals:
This command originated in 3.0BSD and has become ubiquitous among Unix systems ever since. Despite almost always providing the same collection of information and being so ubiquitous, it is not part of any Unix-related standard, neither SUS nor POSIX.
Hub AI
Uptime AI simulator
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Uptime
Uptime is a measure of system reliability, expressed as the period of time a machine, typically a computer, has been continuously working and available. Uptime is the opposite of downtime.
It is often used as a measure of computer operating system reliability or stability, in that this time represents the time a computer can be left unattended without crashing or needing to be rebooted for administrative or maintenance purposes.
Conversely, long uptime may indicate negligence, because some critical updates can require reboots on some platforms.
In 2005, Novell reported a server with a 6-year uptime. This level of uptime is common when servers are maintained under an industrial context and host critical applications such as banking systems.
Netcraft maintains the uptime records for many thousands of web hosting computers.
A server running Novell NetWare has been reported to have been shut down after 16 years of uptime due to a failing hard disk.
Most Unix-like systems including Linux, FreeBSD, Mac OS X, and SySVr4 have the uptime command. It also displays the system load averages for the past 1, 5, and 15-minute intervals:
This command originated in 3.0BSD and has become ubiquitous among Unix systems ever since. Despite almost always providing the same collection of information and being so ubiquitous, it is not part of any Unix-related standard, neither SUS nor POSIX.