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Administration: Difference between revisions
→Time Settings
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To make any of the above changes take effect, click on the Save settings button at the bottom of the page. To reload the stored settings, click on Reload settings. | To make any of the above changes take effect, click on the Save settings button at the bottom of the page. To reload the stored settings, click on Reload settings. | ||
====== Changes of the system time and packet timestamping ====== | |||
The packet processing uses a monotonically increasing time for software packet timestamping and statistics calculation (see ''Hardware packet timestamping'' in [[Global settings]] for information about packet timestamps on interfaces with hardware packet timestamping enabled) . If the clock for some reason jumps forward in time (e.g. changing the time synchronization method or manually changing the time) the same will happen with the statistics and the packet timestamps and there may be a gap in the statistics. If the system clock jumps backwards in time the packet processing cannot jump back. In this case a warning "problematic change of system time detected (core restart recommended)" is displayed. While the packet processing time is ahead of the system clock the packet processing time will run at a speed of 75% of real-time so that the system clock will eventually catch up. This can e.g. lead to statistics that show higher traffic bandwidth than there actually is. A restart of the packet processing is always recommended in this case. | |||
=== Email notification === | === Email notification === | ||