Bug #124402 for Proc-ProcessTable: pctcpu sometimes returns "Inf"

Hi Frank, this is actually a tricky one. I think it is not a bug of Proc::ProcessTable. It has more to do with "How to calculate the CPU usage?". Here is more information: https://unix.stackexchange.com/questions/58539/top-and-ps-not-showing-the-same-cpu-result/58541#58541 https://stackoverflow.com/questions/16726779/how-do-i-get-the-total-cpu-usage-of-an-application-from-proc-pid-stat So basically, the pctcpu value is always wrong. Similar to the ps command. To do it right, I _tried_ to create an example, see here: https://github.com/jwbargsten/perl-proc-processtable/blob/master/contrib/pctcpu_example.pl The idea is to create a time window in which you measure the used cpu time of a process. This you have to divide by the elapsed time. The example is a little bit more sophisticated than it needs to be, it implements a "moving average". This should come quite close to what you see in (h)top. I hope this helps. Cheers, Joachim Am Mo 12. Feb 2018, 12:58:58, cbbs70a schrieb: Show quoted text