CPU And Fan Getting Hammered

Discussion in 'macOS' started by MadDoc, Jan 12, 2008.

  1. MadDoc macrumors 6502

    MadDoc

    Joined:
    Apr 25, 2005
    Location:
    UK
    #1
    I can't work out what is going on.

    I'm running 10.5.1. I've had no problems since launch. The last few days I have noticed that after my Mac has been running for a few minutes - the fan slowly speeds up and performance drops.

    I think the problem is 'mdworker' (whatever that is):

    [​IMG]

    I don't know why it says PowerPC either (using a C2D MBP). The only apps I had running at that time were Safari and Mail. I have nothing in my startup items folder. I don't recall installing anything new either.

    Any ideas - it's very annoying!

    MadDoc
     
  2. Shadow macrumors 68000

    Shadow

    Joined:
    Feb 17, 2006
    Location:
    Keele, United Kingdom
    #2
    mdworker is Spotlight, so it may just be indexing your HD. However, you've had it for a few days so it cant still be indexing. And why is it PPC? This is odd. Try killing the process and see what happens.
     
  3. MadDoc thread starter macrumors 6502

    MadDoc

    Joined:
    Apr 25, 2005
    Location:
    UK
    #3
    If I kill the process or kill spotlight it just restarts again :(

    I only have one internal drive and I can't think why it would be indexing it. Time Machine is not active either.

    MadDoc,
     
  4. MadDoc thread starter macrumors 6502

    MadDoc

    Joined:
    Apr 25, 2005
    Location:
    UK
    #4
    Does anyone have any suggestions?

    This is now happening whenever I start my Mac. It's always a PPC application (mdworker). What gives?

    Killing the process does nothing. This happens when only the Finder is running.

    MadDoc,
     
  5. johninsf macrumors newbie

    Joined:
    Feb 21, 2008
    Location:
    San Francisco, CA, USA
    #5
    You can disable spotlight by putting your hard disk in its privacy list in the preferences (at least that worked in Tiger). Or if you let it run long enough, it may be done with its indexing. It can be a pain if you change a large file on a regular basis, and Spotlight re-indexes it.

    But the REAL question here is, why does Apple still have a PowerPC version of mdworker (which is one of the processes that indexes all the various files that have changed on your harddisk. Anyone know?
     
  6. squeeks macrumors 68040

    squeeks

    Joined:
    Jun 19, 2007
    Location:
    Florida
    #6
    my guess is because there are still powerPC users out there???

    and leopard is a universal OS???

    no idea why its running on his machine though...reinstall time!!
     
  7. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #7
    I'm going to agree with squeeks. This is the first time I've seen such a low level system process running in the incorrect architecture. Call up Apple or reinstall OS X. Apple does OS X support you know. ;)
     
  8. Burnsey macrumors 6502a

    Joined:
    Jul 1, 2007
    Location:
    Canada
  9. doug in albq Suspended

    doug in albq

    Joined:
    Oct 12, 2007
    #9
    I had a similar issue. Not sure why, but mdworker lately sometimes goes off the charts when, at the same time my spotlight is NOT indexing. Or at least not "openly" as in seeing the little dot within the spotlight magnifying glass.

    I don't have the answers, but some questions I'll throw out there:

    1.Been doing any bittorrenting lately?

    2. WiFi connect (purposefully or accidentally) to a different LAN,like the cafe or a neighbor?
    (does mdworker do a hidden indexing of servers or shared disks when one connects to a new LAN?)

    3. do you have a dual-boot HD with two different versions of os X (.4 & .5)?
     
  10. doug in albq Suspended

    doug in albq

    Joined:
    Oct 12, 2007
    #10
    also, the fix for mdworker going out of control is to boot from leopard install and repair permissions.
     
  11. johninsf macrumors newbie

    Joined:
    Feb 21, 2008
    Location:
    San Francisco, CA, USA
    #11
    Spotlight indexes disks initially when you first connect, showing the dot in the magnifying glass, but it re-indexes any file whenever it is modified. During re-indexing, there is no visible indicator, it happens in the background. If you are constantly modifying big files, such as by using bittorrent, this can cause a lot of background action, so Doug in albq is right to ask that. I'm not sure if bittorrent in particular causes this, but Eudora seemed to, with its monolithic email database files that were always being modified.
     
  12. kmzs macrumors newbie

    Joined:
    Apr 29, 2008
    #12
    MadDoc, have you used REALbasic? Have you installed its spotlight plugin? If answers both are "Yes", removing its plugin from /Library/Application Support/Spotlight/ may fix your issue. :mad:
     
  13. rhinoab macrumors newbie

    Joined:
    Jan 25, 2008
    #13
    I has this problem, and it all came down to mdworker continually trying to index the bittorrent file that I was downloading.

    You can check what mdworker is doing by opening terminal and typing in
    lsof | grep mdworker

    After looking closely I found that my downloads folder was there twice. This is where the bittorrent files were being saved.

    I have since hidden the downloads folder from the spotlight search and this has sorted out the problem.

    Systempreferences/spotlight/Privacy (add your bittorrent folder).

    Thx for the tip doug_in_albq
     
  14. lostngone macrumors demi-god

    lostngone

    Joined:
    Aug 11, 2003
    Location:
    Anchorage
    #14
    Yes I have had this problem as well. Large Bit-torrent files also play havoc with time machine because during downloading they are always changing as more of the file comes in.

    MadDoc can you go into Terminal under the utilities folder and type

    tail -f /var/log/system.log

    When this is happening and see if anything about mdworker shows up?
     

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