Os X & Vm

Discussion in 'OT Technology' started by mobbarley, Sep 5, 2006.

  1. mobbarley

    mobbarley Active Member

    Joined:
    Mar 4, 2005
    Messages:
    9,256
    Likes Received:
    2
    Location:
    Sydney
    Has everyone got very high VM usage? I have noticed this before but it has never really conserned me.

    [​IMG]

    Almost 5 gigs of VM ? My computer has only been up for about 10-15 and has only had safari, mail, itunes running.

    It gets worse, after hitting F12 and letting the dashboard load its up to 7.12 GB (!)

    I know widgets look beautiful and all but damn!
     
  2. colosodian

    colosodian Next Gen

    Joined:
    Oct 16, 2004
    Messages:
    1,110
    Likes Received:
    0
    Location:
    SF Bay
    Yea, I have about 7GB of vm right now.
     
  3. xenon supra

    xenon supra OT Supporter

    Joined:
    Feb 3, 2005
    Messages:
    33,675
    Likes Received:
    0
    Location:
    San Diego, CA
    9.23 vm :dunno:
     
  4. mobbarley

    mobbarley Active Member

    Joined:
    Mar 4, 2005
    Messages:
    9,256
    Likes Received:
    2
    Location:
    Sydney
    doesnt that seem excessive?
     
  5. xenon supra

    xenon supra OT Supporter

    Joined:
    Feb 3, 2005
    Messages:
    33,675
    Likes Received:
    0
    Location:
    San Diego, CA
    i dont even know what it means?

    my computer runs great. thats all that i care about.
     
  6. colosodian

    colosodian Next Gen

    Joined:
    Oct 16, 2004
    Messages:
    1,110
    Likes Received:
    0
    Location:
    SF Bay
    It seems excessive, a mac mini user with a 4200rpm drive would definitely feel an effect from this.
     
  7. Rev. Johnny Vegas

    Rev. Johnny Vegas Rectal Ventriloquist

    Joined:
    Jun 13, 2001
    Messages:
    66,660
    Likes Received:
    157
    Location:
    250 miles north of home
    Most *nix OSes benefit from a large amount of swap space aka virtual memory.

    The rule of thumb I was taught with Solaris is that swap should be 2x system memory, unless you have large amounts of memory. Under most *nix OSes you make a special swap partition that is a fixed size. OS X breaks that convention by utilizing the boot partition for swap, which has the benefit of allowing it to dynamically allocate as much space as it wants.

    If you carry the 2x system memory standard over to OS X, that means I should expect at least 4GB of swap space on my MacBook. It happens to have 7.72GB allocated to swap right now, which indicated OS X is more of a memory hog than we already expected.
     
  8. Peyomp

    Peyomp New Member

    Joined:
    Jan 11, 2002
    Messages:
    14,017
    Likes Received:
    0
    Most of that is paged out and so infrequently accessed it ain't no thing. But yeah, the 10+GB that it always sits at is excessive.
     
  9. mobbarley

    mobbarley Active Member

    Joined:
    Mar 4, 2005
    Messages:
    9,256
    Likes Received:
    2
    Location:
    Sydney
    I guess ive never noticed, but it explains why my HD always feels full.

    Ive been keen to double my ram to 2GB, kind of worried about it using more for swapping. I hope it would only allocate more as needed.

    the thing that has me astounded is how can a program like textedit claim 210+ MB of swap space when freshly loaded with a blank document!?!?
     
  10. mobbarley

    mobbarley Active Member

    Joined:
    Mar 4, 2005
    Messages:
    9,256
    Likes Received:
    2
    Location:
    Sydney
    okay, safari loading a 15 MB jpg (huge yes, but not unreasonable) went to over 1.6 GB(!) of VM.

    Safari's slow handling of large / animated images is one of my only gripes with the browser.

    I'd love to see what all these processes are paging in and out, or if it is just empty space as a place holder.
     
  11. moses

    moses OMGWTFBBQ

    Joined:
    Mar 22, 2000
    Messages:
    40,221
    Likes Received:
    0
    Location:
    Austin, TX
    my safari VM usage is often over 1 GB of VRAM.
     

Share This Page