4.5.8 Notes about time zone differences from one host to another
To display reports correctly, the time zone of the host on which ITSLM - Manager is installed must match the time zone of the computer from which the monitoring person is logged in to ITSLM - Manager.
This subsection explains the totals time and data for reports when the time zones do not match.
- Organization of this subsection
(1) Time periods subject to monthly or daily totals
The monthly and daily totals in reports are obtained from the values aggregated for one month and for one day, respectively, based on the time zone of the host on which ITSLM - Manager is installed. For example, if the time zone at the host where ITSLM - Manager is installed is GMT + 0900 and the time zone of the computer where the monitoring person is logged in to ITSLM - Manager is GMT, the time period subject to data collection for April 1, 2012 is from 2012/04/01 00:00:00 + 0900 to 2012/04/01 23:59:59 + 0900.
(2) Date and time display in performance charts
The time displayed in a performance chart might be shifted depending on the time zone of the host on which ITSLM - Manager is installed and the time zone of the computer from which the monitoring person is logged in to ITSLM - Manager.
The following describes the cases where the time displayed in a performance chart is shifted.
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When the time of the host on which ITSLM - Manager is installed is ahead of the time of the computer from which the monitoring person is logged in to ITSLM - Manager, the time displayed in a performance chart is shifted behind by the time difference (rounded up by a day).
For example, if the time zone of the host on which ITSLM - Manager is installed is GMT + 0900 and the time zone of the computer from which the monitoring person is logged in to ITSLM - Manager is GMT, the service performance for 2012/04/30 is displayed in a performance chart in a report as being for 2012/04/29.
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When the time of the computer from which the monitoring person is logged in to ITSLM - Manager is more than 24 hours ahead of the host on which ITSLM - Manager is installed, the time displayed in a performance chart is shifted ahead by the time difference (rounded down by a day).
For example, if the time zone of the host on which ITSLM - Manager is installed is GMT - 1200 and the time zone of the computer from which the monitoring person is logged in to ITSLM - Manager is GMT + 1200, the service performance for 2012/04/29 is displayed in a performance chart in a report as being for 2012/04/30.
(3) Time displayed in CSV files
When reports are output to CSV files, each line displays the date the data was totaled by the host on which ITSLM - Manager is installed.
For example, if the time zone of the host on which ITSLM - Manager is installed is GMT + 0900 and the time zone of the computer from which the monitoring person is logged in to ITSLM - Manager is GMT, the time displayed in graphs in the window is shifted behind by one day but the time displayed in CSV files is not shifted; that is, the time at the host on which ITSLM - Manager is installed is displayed.