Why is there Performance issue on linux servers?

[Ritu]

I have installed every lib functions , perl scripts on one of the linux servers decalred env variable as well but still can not get the nmon performance data for cpu and memory on the server.
Could any one assist or help on this topic also didnt find any relevant error in splunkd.logs.

[richgalloway]

What is the "performance issue" mentioned in the subject?

The easiest way to get performance metrics from a Linux box is to install a Universal Forwarder with the Splunk Add-on For Unix and Linux app.  The app contains many inputs, including several relating to performance.  Enable the ones you need and restart the UF.