I'm a new user of PT and this program is really what I have been looking for a long time! One of my motivation to use this software was to lower the priority of my antivirus software (Kaspersky AV6) when it is scanning in the background since this can often cause sluggish response of the system.
So I installed PT, protected the foreground process from being tamed (I prefer this), enabled balloon tips and launched the "Test CPU Eating App". When selecting another window, PT effectively lowered the priority of the test app and displayed a ballon tips accordingly. Making the test app active did increase its priority to normal, just as expected. Perfect I thought everything was setup correctly. Then I tried to test the same thing by launching a scan with my antivirus: nothing! I looked at the CPU usage of the antivirus process (avp.exe) and it was 98-100% most of the time....but the priority was still normal. I must stress that the antivirus was not the active window so it should have been tammed normally. No matter if it was the active window or not, the scanning was always at CPU 98-100% usage and the priority was always at normal (no ballon tips poped up of course).
Then I decided to test PT with another CPU stressing application known to benchmarkers: Prime95. I launched a torture test of the CPU (so CPU usage is always 100%) and checked the priority: it was set to low! So now it seemed to work but actually it didn't: the priority remained low whether Prime95 was the active window or not (the priority should have gone to normal when Prime95 is the active window, according to my configuration settings). Second thing: I did not get any balloon tips saying the the priority of Prime95 was set to low at the beginning of the test. Last but not least: unloading PT and relaunching a Prime95 torture test produced the same results: priority went to low as well. So It's likely that Prime95 itself sets its priority to low when running a test and this has nothing to do with PT.
So I have some troubles to understand what's going on with PT on my system:
- it works perfectly with the Test CPU Eating App, all the time as expected and with ballon tips
- it doesn't work at all with Kaspersky Antivirus when launching a scan (the antivirus always have a normal priority despite high CPU usage)
- it doesn't work with Prime95, the priority is changed by Prime95 itself and not by PT. I had no balloon tips and when making Prime95 the active window the priority remained low. This is not a good testing application since Prime95 lowers its priority itself automatically so PT has no impact on it probably.
If anybody can help me? My main goal is to understand how all this works and be able to have PT lowering the priority of Kaspersky antivirus when the latter is scanning the HD in the background (only when it is in background and not when it's the active window so I don't want to force the priority of KAV to low).