Assessing Performance

Discussion in 'Mac mini' started by rokey, Sep 21, 2011.

  1. rokey macrumors member

    Joined:
    Apr 13, 2011
    Location:
    NC
    #1
    Mac mini Mid 2011
    i5 2.3GHz (98% Idle)
    500GB HDD (75% empty)
    8GB RAM 1333 MHz DDR3 (70% available)
    1 hour uptime
    Disk permissions repaired 2 hours ago
    Only Chrome and Mail running in the foreground

    Some tasks take a while to complete, and dont max (or even HEAVILY increase) CPU usage. For example, I can launch iPhoto (which takes 21 seconds to become fully operational) and 3 out of 4 CPU threads will remain 90% (or more) idle, while one thread will be nearly maxed.

    Why do some things seem to lag like this?
    All help is greatly appreciated!!!
     
  2. DustinT macrumors 68000

    DustinT

    Joined:
    Feb 26, 2011
    #2
    Launching applications is almost always delayed by your hard drive. If you wanted to see that go away you'd need an SSD. I have one and I just timed my launch for iPhoto. It was 2 seconds to become fully operational.
     
  3. rokey thread starter macrumors member

    Joined:
    Apr 13, 2011
    Location:
    NC
    #3
    That is one thing that I seriously considered already, I suppose my worry about that idea however is that, when launching iPhoto (with over 55GB of files) my HDD never reaches a Read or Write speed higher than 5 MB/s.

    Now, I know that SSDs can have very fast max read/write speeds, but my HDD shouldn't be limited to that 5MB/s.

    Thanks for your reply!
     
  4. shortcut3d macrumors 65816

    Joined:
    Aug 24, 2011
    #4
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    The HDD is limited by random or small read/writes. SSDs really excel in this area. For example OWC claims their Pro 6G is up to 98 times faster. The reason is 4k read/write when a standard HDD only manages less than to slightly more than 1MB/s.
     
  5. rokey thread starter macrumors member

    Joined:
    Apr 13, 2011
    Location:
    NC
    #5
    Well now that makes a ton of sense in the long run. For the last month I've been eyeballing a 512GB SSD on the egg but it's still up around $800, a little high for my wallet. Do I need a drive just big enough for my OS + Apps, or OS + Apps + their files (like the iPhoto Library)
     
  6. rokey thread starter macrumors member

    Joined:
    Apr 13, 2011
    Location:
    NC
    #6
    also, i've been starting to get an issue with spotlight. it runs very sluggish sometimes, and sometimes once i start typing a search the spotlight bar gets um... lost?
     

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