How to tell if you have a strong computer. Also Retina users come in.

Discussion in 'MacBook Pro' started by InfinitiG, Oct 24, 2012.

  1. locoboi187 macrumors 6502a

    Oct 3, 2012
    I think this test is more dependent on your internet connection...
  2. InfinitiG thread starter macrumors 6502

    Jun 22, 2010

    wrong, my CPU usage maxed out while loading
  3. hface119 macrumors member

    Oct 24, 2012
    It doesn't matter. It's still about internet connection, if you're talking speed of loading times.
  4. locoboi187 macrumors 6502a

    Oct 3, 2012
    Something is wrong then. My CPU is idle 85% on activity monitor while loading the image. That includes other ACTIVE processes in the background. Base rMBP.

    Attached Files:

  5. daneoni macrumors G4


    Mar 24, 2006
    My CPU got hotter but at the peak, only 15% of total CPU power was being used.
  6. theuserjohnny macrumors 6502

    Jul 7, 2012
    lawl something is wrong with your CPU then. I was 85-90% idel. You must have crappy internet.
  7. InfinitiG thread starter macrumors 6502

    Jun 22, 2010
    i checked again using activity monitor instead of istat , my cpu idles 40%-50%
  8. phyrexia macrumors 6502a

    Sep 3, 2010
    4% user cpu usage. 90% idle. this is on the macbook pro, not my more powerful desktop.

    hell I bet my powermac will load this fine and dandily

    but thank you for the neat picture
  9. MikieMcBikie macrumors regular

    Mar 14, 2009
    lol... k then. I have 100Mb internet connection, and i was loading at 50-60KB a second. Safari web content went nuts on the processor but i am not sure why, it is supposedly just downloading a hi res pic? or something? Seems more of a problem with Safari than anything else. or something. what was this thread about anyways??
  10. ITS ME DAVID macrumors 6502

    Jul 13, 2010
    Pasadena, Ca
    Loaded fine on my iPhone 5
  11. bill-p, Oct 24, 2012
    Last edited by a moderator: Oct 24, 2012

    bill-p macrumors 68000

    Jul 23, 2011
    To those who say 80% idle, that's actually NOT right.


    Apparently, Activity Monitor counts 100% CPU utilization as only about 12% on the usage graph. Why? Because the quad-core chip counts as having 8 CPUs (4 actual cores, 8 virtual threads), and since you are only using 100% of 1 of those CPUs, that must be only 12% of your entire capacity.

    Makes sense, right? Except that 4 of those "cores" are virtual cores, so you only need to max out 1 real core for things to get totally bogged. See the individual graphs for each core to see how the load is distributed, and how it comes really close to bogging down the cores at some points. It's obvious from the individual core graphs that 80% idle at that point is impossible!

    And folks, this is a prime example of what I'd call a CPU-BOUND situation. If your rMBP lags during this time, it's because the CPU core handling the main interface thread is bogged by this silliness.

    Thank you, OP... for finding a perfect example for me to show how graphics on the Retina MacBook is NOT dependent on the GPU.
  12. Mdwall macrumors member

    Oct 19, 2012
    I must have a strong computer then. My 5 year old Toshi with its 2ghz core 2 and 4 gigs of ram did just fine never even kicked up the fan off of idle...Sure it took about a minute or so but I think that's more the internet connection.
  13. trsblader macrumors 6502

    May 20, 2011
    Varied between 75-83% idle and that's with a virtual machine open and working.
  14. phyrexia macrumors 6502a

    Sep 3, 2010
    All of your CPU percentages added up = 133.8
    You have 4 real cores and 4 virtual cores so Activity Monitor thinks you have 8 cores.

    800 - 133.8 = 666.2

    133.8 / 800 = 16.725
    666.2 / 800 = 83.275

    I don't understand what you're trying to imply. The screenshot is accurate. Activity Monitor (in this regard anyway) is accurate.

  15. Bennytsmithjr macrumors member

    Oct 3, 2012
    I keep getting a image not found error
  16. bill-p macrumors 68000

    Jul 23, 2011
    What I'm trying to imply: % idle overall reported by Activity Monitor is wrong as a metric to consider how much load your processor is under.

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