Mac Pro: kernel_task hog issue

swo

macrumors newbie
Original poster
Aug 19, 2006
6
0
I restarted my Mac Pro for the first time today and noticed something weird in my Activity Monitor. Process ID 0 kernel_task was using 25% of my CPU, or one whole core. This lasted about 10-15 minutes and then went down to 1% of overall CPU usage.

I wondered what is happening, is this a behind the scenes 'tidying up' of drives?

Cuts my processing power by a 1/4 if it were to happen on a regular basis.

Anybody have any idea what this is?
 

mkrishnan

Moderator emeritus
Jan 9, 2004
29,777
12
Grand Rapids, MI, USA
It's almost certainly just operating system housekeeping types of activities. PID 0 *is* the operating system -- it's the kernel. It's normal for the OS to be CPU-intensive for a little while after boot, although 15 minutes sounds excessive. It could be that it was doing some background task and just saw the available Mac Pro goodness and decided to tap some of it? I would think that it wouldn't be a practical issue for you, although I'm not certain.
 

swo

macrumors newbie
Original poster
Aug 19, 2006
6
0
thanx for the info

i suspected as much - but was a little freaked out at the amount, and while it was going on I had the what if that happens all the time thought!

thanx for the info -
that eases my mind a bit.
 

gekko513

macrumors 603
Oct 16, 2003
6,302
1
I'm guessing it was indexing your hard drive for use with Spotlight. If so, that's a one time occurence.