High CPU usage

I have noticed that when I check with iStatPro my CPU usage is always high and most often there is only 1% idle, sometimes a little more. Now, my iMac is aging, Late 2009, so I am not expecting very high percentage of idleness, but one or just a few percent? When I check Activity Monitor, it seems like it is launchd, ReportCrash, UserEventAgent and fseventsd who are mostly running up in double digits and sometimes WindowServer joins the party.

I am not expert but I have at least tried to start up in Safe Mode, repairing permissions (it seemed to go down a more normal level as long as I stayed in Safe Mode) and then I reset the SMC and PRAM, but after that it was back to the usual.

Anyone has any ideas and suggestions?

iMac, OS X Yosemite (10.10.5), Final Cut Pro X, Canon HV30

Posted on Sep 28, 2015 10:28 PM

18 replies

Sep 30, 2015 2:08 AM in response to MadMacs0

MadMacs0 wrote:

No, versions prior to 2.8 will continue to work for the foreseeable future and are still free to use, just no longer formally supported. They may break some day in the future either due to an OS X change or if Cisco/ClamAV® changes the format for their signatures, but there's no indication of that.

OK, but during all these years since 1998, I have had one tiny virus on my Macs - which ClamX caught, btw. Other than that, I tried a Norton package on my old G4 and it started to behave like a virus, deleting files and such. Deleted it and never touched anything Norton again:)

Sep 30, 2015 2:33 AM in response to Wilfred Hildonen

This may help you

Apps can affect Mac performance, battery runtime, temperature, and fan activity - Apple Support

Sep 30, 2015 2:42 AM in response to Việt Anh Trịnh

Thank you but that was already suggested and didn't help much. What did was to use Console to find out why CrashReporter kept on popping up every few seconds. That pointed me to a folder which denied me access and as soon as I changed that, CPU usage went down. Then I removed the entire folder since it isn't anything I use (and frankly, I can't even remember when I have installed that AirServer-thing). What is left now is just to clean up among third party apps and ulitities which has been amassing over the years. But thanks for the info:)

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High CPU usage