iSPI Counter calcualtion
We are replacing OVPI with iSPI Performance for Metrics. Kindly provide us the feasibility and references for below items
1. In OVPI if counters are absolute/direct counters then we use rcopy i.e value at the particular time will be same as the value polled without doing any operation. If the counters are incremental/cumulative then we do r2d to make delta from previous reported value to identify the value at the polling time. Does iSPI support configurations of doing the delta for cumulative counters ?
2. Summarization - Hourly/Daily/Weekly/Monthly/Yearly are supported in PI where we can use Max, Min, AVG, SUM, etc functions. In iSPI how do we configure say AVG as summarization function ?
Re: iSPI Counter calcualtion
with iSPI Perfomance for Metrics (PerfSPI) the monitoring is setup in NNMi and the data is collected by NNMi. The collected data is stored on the NNMi system and is exposed to the PerfSPI. On a regular basis the PerfSPI copies the files from the NNMi system to the PerfSPI system and deletes the files on the NNMi system. The PerfSPI then extract, transforms and load (ETL) the data in its database. Data is stored in raw, hourly and daily tables with Min, Max, Avg, and some other calculations. This is all out of the box.
The PerfSPI includes standard metrics for Node Sensors like CPU or Memory and interfaces like Throuput (BitsPerSecond) and Utilization (IfUtil%). Custom metrics can be collected in NNMi via the Custom Poller. You can export the Custom Poller collected data to the PerfSPI and can adjust the type (Gauge,Counter) if needed.
So, PerfSPI does not work without NNMi, which is different to PI.
Default metrics cannot be changed from Counter to Gauge.
Custom metrics can collected via Custom Poller and type can be defined.
HTH and kind regards