iTunes 10 CPU Usage During Sync

Discussion in 'Mac Apps and Mac App Store' started by jcuk, Jun 27, 2011.

  1. jcuk macrumors member

    Oct 5, 2009
    Motherwell, Scotland.
    Hi Guys,

    I've recently just attempted to sync my iPod Touch 4G to iTunes 10 on my mac. This has resulted in an unusual amount of CPU activity and temps reaching 85-90 Deg C.

    I haven't experienced this previously and it seems to be since updating to the latest iTunes, heres the details:-

    OS: Mac OS X 10.6.8 (10K540)
    iTunes: 10.3.1
    MBP 13" (Mid 2009)
    2.23 C2D / 4GB DDR3 / 500GB HDD / 9400M GPU.

    iPod details:-
    Model: Touch 4G
    Capacity: 32GB
    Software: iOS 4.3.3

    Currently it's trying to sync around 230 newly imported songs and around 1000 newly imported photo's.

    The CPU time shows on activity monitor as averaging 177% CPU / 300 MB mem at the upper end and then rapidly jumping down to 120% CPU / 220MB mem for around 1/2 a second.

    The CPU time is fine when using iTunes to play media and even at the starting stage of the backup process & transferring purchased when connecting the iPod there are no problems.

    Sync Stage 4 of 5 is the part where it syncs music - despite this being USB2, it's rather slow too. Currently at 77/214 & total CPU time now at 30 minutes.

    Currently also running is transmission downloading at around 2.7MB/s, safari running idle with no flash - primarily text based only site, activity monitor and profiler.

    I'm unable to find anything by using search on the forums, despite searching itunes I recieved a plethora of unrelated results.

    Found limited other information on the web too.

    Attempts to resolve:
    Mac reboot - No Fix
    iTunes sync stop / sync start - No Fix
    Reinstall iTunes 10.3.1 from standalone - No Fix

    Has anyone else experienced this problem or have any suggestions on improving things?

  2. davidg4781 macrumors 68020

    Oct 28, 2006
    Alice, TX
    The only thing I can think of is maybe you have the box ticked for converting higher bit songs to 128kbs.

    I know it takes more time and uses more cycles on my CD MacBook, but nothing that really gets me worried. On my old PC...circa 2003, it takes a long longer to finish. Not sure about CPU cycles as I canceled and just synced normally.
  3. Salukipilot4590 macrumors 6502


    Mar 17, 2009
    Los Angeles, CA
    I'm experiencing this now as we speak.

    I just did a complete update to 4.3.3 on my iPhone 4 and a restore etc....I have 1300 songs to sync. Each song has taken 3-5 seconds to transfer from my MBP to my phone when earlier today it took no more than 15 minutes when I had my first go with 4.3.3.

    What gives? How can it now take so long when the same process was so quick earlier today? (I admit I messed up with a JB and had to restore my phone a couple times)

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