calculation of page fault works in ad_server.

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

Need to know how the calculation of page fault works in ad_server.

Environment

Release :DX UIM 20.4*/23.4*

Components: Ad_server

Resolution

Similar to "% Processor Time," the probe reads the Windows performance counter "Page Faults/sec" for the selected process under the Process category and monitors its value without applying any calculations. If the value breaches the threshold, an alarm will be raised.

Additional Information

Question:

In case of "% Process Time", the value generates based on the no. of processor used by a particular process (Ex, LSASS). So, similarly in case of "Page Faults/sec" will also provide the value based on the no. of processor? If yes, what is the recommended threshold for a process using single processor?

Answer:

No, the Page Faults/sec counter under the Process category does not depend on the number of CPU cores in the same way that % Processor Time does.

 

% Processor Time is a time-based metric. It measures the proportion of CPU time used by the process and aggregates usage across cores, leading to values that can exceed 100% on systems with multiple cores. Page Faults/sec, being an event-based counter, does not have this characteristic.

 

Generally, the default threshold for Page Faults/sec currently is 1000, It is up to customer if want to change.