Jump to content

Welcome to Geeks to Go - Register now for FREE

Geeks To Go is a helpful hub, where thousands of volunteer geeks quickly serve friendly answers and support. Check out the forums and get free advice from the experts. Register now to gain access to all of our features, it's FREE and only takes one minute. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more.

Create Account How it Works

EVIL kernel_task running wild on Mac PowerBook G4

  • Please log in to reply




  • Member
  • PipPipPip
  • 470 posts

Yes, If I'm remembering right I have seen some other sites making mention that kernel_task is nothing to worry about. Mac users are saying how they check Activity Monitor and see it's running at 7 or 8% and slowing things down some. Mine runs 60%, 70%, 86%, 92% and even something like "system locked up"! Talk about computer slowed down!! I'm not sure if it's just when I first start up the laptop or if it's after I connect to the Internet. It usually stays as Process ID 0, is a Root User, has 48 threads and 2 ports. Let's see - right now it has CPU time of 5.32.65 with 45,045.68 (and still climbing), has 98.55 MB of Real Memory with 1.03 GB of Virtual Memory. The next heaviest user of Real Memory is Firefox at 78.37 MB. I'm guessing the slowing down of the computer lasts around 5 to 10 minutes.

Guess what - I don't like this! I want to get rid of this slow down! I've had this problem for a while and can not point to one event that caused it to be slow from that point on.

I'm a PC and Mac user. I don't mind looking around in the computer with someone's guidance. Any suggestions on what to do? Any thing else I should do to look around and see what's going on?

MUCH thanks!
  • 0





  • Topic Starter
  • Member
  • PipPipPip
  • 470 posts
Does this explain what I'm to do with my laptop? Is it considered a Server?


Issue or symptom
As clients search mounted network volumes, the kernel_task process (pid 0) on the server is allocated more and more RAM. System administrators may notice that the amount of RAM allocated to the kernel_task process may be close to 2 GB. On servers configured with 2 GB or 3 GB of RAM, this can result in server performance degrading, or the server becoming unresponsive, or restarting unexpectedly.

Products affected
  • Mac OS X Server (Universal) 10.4.7 or later
You can make the following change to /etc/rc.server to improve performance in this situation. This is recommended only if your server has 2 GB, 3 GB, or 4 GB of RAM.

  • Make a copy of /etc/rc.server with this command:

    $ sudo cp /etc/rc.server /etc/rc.server.bak
  • As the root user, open /etc/rc.server in the text editor of your choice. (Apple Script Utility or Terminal?)
  • Locate this line in /etc/rc.server:
    sysctl -w kern.maxnbuf=90000
  • Change the number 90000 to 20000, so that the line reads:
    sysctl -w kern.maxnbuf=20000
  • Save the changes made to /etc/rc.server.
  • Restart the server.

  • 0

Similar Topics

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

As Featured On:

Microsoft Yahoo BBC MSN PC Magazine Washington Post HP