One of the customer has reported that the Netscaler VPX dashboard monitor is not accurate with the reports.

-- Requirement is to take reports on the Netscaler for the CPU and memory Usage.
-- However customer reported that the built in reports aren't accurate as expected.
-- It is accurate only for less than a month duration. If we need to pull the records for more than a month, the report doesn't display the appropriate time on the GUI as well as on the exported report.
-- Anywhere on the Graphical view, it shows only a fixed time. In customer's scenario, it was showing 04:00 and the date/month/year was right. Issue was only with the time.
-- Tried the same on our lab device with Reporting --> CPU vs. Memory Usage --> duration --> Custom and I was able to reproduce it if the duration is more than a month.

 

In lab device is shows @5.30 anyplace we hover over the cursor. Couldn’t get the logic behind it. Same in the exported report as well.

 

This is as per the  design of NetScaler Reporting Module &  Plotting of graph cannot be of more granular.

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Problem Cause

Plotting of graph cannot be of more granular.

When UI requests for more than a month duration data then the backed returns the counter values with per day granularity i.e. one record per day.As requested date range is wider, backend returns the data with granularity of per day basis to plot the graph. The date change is detected as 00:00:00 GMT i.e. 05:30 IST. And at this time the last 24 hours data is averaged out and stored for that day.