2011 iMac fans

Posted by: Acumowchek

2011 iMac fans - 05/19/13 07:46 PM

Are really bugging me.
i5 27" 12GB memory.
I downloaded iStat widget a while ago to monitor my fan usage, but I can't figure out what's causing them to kick in.
Hard drive fan goes up to 3880+ and the top gets really hot.
I have a theory (don't laugh). It only seems to happen when I have Facebook open in Safari.
I've reset PRAM and SMU to no avail.
The thing is, I can be using Photoshop, Illustrator, burning DVDs, etc. and it doesn't happen.
Too many tabs open in Safari? I dunno…
Posted by: Acumowchek

Re: 2011 iMac fans - 05/20/13 06:19 PM

Well, so, okay, how about this then?
I have 3 external hard drives connected to the iMac.
2 USB, 1 Firewire.
One for music, one for movies, one for business files/Time Machine.
Could that be causing the internal HD to get hotter?
Should I eject them when not in use?
Posted by: Jim_

Re: 2011 iMac fans - 05/20/13 06:33 PM

Launch Activity Monitor. In the Activity Monitor window, look at All Processes, sort by CPU%.

At the bottom click the Disk Activity tab, watch the Data written stats.

Look for major usage in either one.
Posted by: Acumowchek

Re: 2011 iMac fans - 05/20/13 06:53 PM

All Processes?
I've always looked at the Real memory column.
Kernal task: 670MB.
Safari Web Content:508MB
Safari: 320MB
They are always at the top memory usage.
I knew Safari Web Content was evil, but I thought I would be okay with 12GB ram.
crazy

Edit: mds Virtual memory is 1.1GB.
Posted by: Jim_

Re: 2011 iMac fans - 05/20/13 07:08 PM

None of that matters, we need to look at CPU% and Disk Activity since you say it's your HD fan that is ramping up.

All Process is chosen next to the Filter window BTW.
Posted by: Acumowchek

Re: 2011 iMac fans - 05/20/13 07:49 PM

All Processes, got it. Had it set on My Processes. blush
Data written is 2.35GB, but the fans are not spinning right now. Will check when they do.
Could it be that during the day, it's 80º + in my house?
It gets way hotter than that here, and I never used to experience this with "normal" usage.
Posted by: Acumowchek

Re: 2011 iMac fans - 05/21/13 07:01 PM

Read in:108344
Read Out: 403056
Data Read: 4.94GB
Data Written: 12.20GB

Whatever that means…

It is not hot today, but the fans have kicked in…
Posted by: Jim_

Re: 2011 iMac fans - 05/21/13 07:21 PM

Data Written/sec
CPU%

At the time the fans are going fast.

All the other numbers you gave are just total stats since the last reboot, or maybe log out, I forget, but Data Written/sec and CPU% are current draws.
Posted by: Acumowchek

Re: 2011 iMac fans - 06/15/13 01:56 PM

Figured it out!
The intake holes on the bottom of the iMac were clogged with dust. blush
I wish there was an easier way to unclog them besides wiping down and using compressed air. Feel like I'm shoving more dust into the machine.
Posted by: Jim_

Re: 2011 iMac fans - 06/15/13 06:14 PM

LOL. And I thought with all my cats that my office was the epi-tome of fuzz and dust. laugh

Thanks for the follow up, I was wondering if it just went away or something.
Posted by: Acumowchek

Re: 2011 iMac fans - 06/15/13 06:20 PM

Cats.
Flea bearin' varmints, they are…
Attack you where you least expect.
Posted by: Jim_

Re: 2011 iMac fans - 06/16/13 03:35 AM

Originally Posted By: Acumowchek
Attack you where you least expect.
LOL, I do get that.

Cats are naturally tripping.