Kernel /vmlinuz-2.6.9-89.ELsmp ro root=LABEL=/ rhgb quiet clock=pmtmr Overriding the clock source configuration:Īdding clock= to the kernel stanza: title Red Hat Enterprise Linux AS (2.6.9-89.ELsmp) Hpet= option to disable HPET and use PIT.
In order to check what time source may be used with RHEL4 kernel, one should read the kernel documentation file /usr/share/doc/kernel-doc-2.6.9/Documentation/kernel-parameters.txt: clock= gettimeofday timesource override.įorces specified timesource (if available) to be used Verifying documentation on time source kernel parameters: One can easily perform this task through searching in /var/log/dmesg file for "time": # grep "time" /var/log/dmesg
#Change the clock how to
How to override system's configuration specifying a particular clock source.How to check what clock source is currently in use by the system.Add to that, another poll taken by CBS just four years prior found that Americans were split about down the middle about whether they wanted the twice annual time change or not. The problem is that according to the 2019 AP-NORC poll more Americans, 40 percent, would prefer to have Standard Time year round. Lawmakers in Washington and several state legislatures have introduced bills to make Daylight Saving Time permanent, 19 have enacted bills or resolutions to do so, some contingent on their neighbors doing the same. The problem is which system to use, Daylight Saving Time, with an extra hour of sunlight, or Standard Time. 6 November 2022: clocks turn back at 2 amĪ poll back in 2019 found that 71 percent of Americans don’t like switching their clocks back and forth twice a year.13 March 2022: clocks turn forward at 2 am.Part of the legislation extended Daylight Saving Time by a month, moving the time change to the second Sunday in March to the first Sunday in November. The current schedule for adjusting clocks twice a year was established under the Energy Policy Act of 2005. Not all states observe the time change and it wasn’t until 2007 the Indiana as a whole observed the change. But it wasn’t until the Uniform Time Act of 1966 that the process was coordinated across most of the US with some quirks in some places. The twice annual ritual of changing clocks dates back to the First World War. When do clocks change for Daylight Saving Time?
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