Monitoring related question
We use BMC Patrol to monitor systems' metrics at my company. I'm trying to find some information regarding interpreting those results.
For example: In a dual processor system (physical) the OS reports 4 processors (hyperthreaded or dual core) and Patrol interprets that utilization as such (it sees it as 4 physical processors.)
I know each logical processor doesn't represent 1 full additional processor in terms of computing power, but I'm trying to find some information on some guidelines to use so when I look at my monitoring software and see 30% util (of 4 processors) I can equate that to REALLY using, say 50% of the actual available CPU. I'm also hearing that there are variances in the additional logical processor if it's hyperthreaded or dual core (dual core being more performant.)
I hope that wasn't too too confusing.
Re: Monitoring related question
Steve , Guidelines are often misleading . I was asked to confirm whether enabling HT is going to improve our DB Query perfformance , Guess what i could not conclude , Few queries were performing better in Hyperthreaded system , and few were performing better in non-HT mode .
So the only way you can figure this out is by running a sample test on Hyperthreaded and non-Hyperthreaded mode and compare the CPU statistics . It should give you a head-start.
I hope my answer is clear.And do let us know your findings .