ITunes 10.6.3 hogs CPU time

I'll notice the system bogging down...and find that iTunes is use 80% or more of my CPU time in Activity Monitor.  This did not happen with 10.6.1.  Tips/tricks/suggestions would be appreciated.

I'll notice the system bogging down...and find that iTunes is use 80% or more of my CPU time in Activity Monitor.
There's a couple of different things that can hit folks in this way.
Doublechecking ... are you getting this when iTunes is in the mini player mode? Or in the main player?

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  • SystemUIServer hogs CPU time-with details

    Like so many others, I am finding that SystemUIServer is often consuming between 90% and 100% of a CPU. I have tried various of the solutions offered in other threads, to no avail. And I believe I have more details than I have seen posted yet. First, the elementaries:
    Mid-2007 iMac, 24", 4 GB, clean install of 10.8 followed by restoration of user files from a Time Machine backup, then followed by deletion of a great many $HOME/Library/Preferences files (and a reboot) to try to eliminate system slowness.
    I have no Login Items. The right-hand menu bar initially contained the icons for
    Time Machine
    Bluetooth
    Volume control
    Date & Time
    Fast User Switching
    Spotlight
    Notifications
    I turned off Date & Time and restarted SystemUIServer. The problem was not solved.
    I turned Date & Time back on, and turned off the Time Machine icon display, and restarted SystemUIServer. The problem was not solved.
    When CPU consumption is high, ps shows
    $ ps axguw | egrep CPU\|UIS | grep -v grep
    USER             PID  %CPU %MEM      VSZ    RSS   TT  STAT STARTED      TIME COMMAND
    matt             288  95.5  2.0  2640848  83564   ??  R    Wed06PM 1291:43.28 /System/Library/CoreServices/SystemUIServer.app/Contents/MacOS/SystemUIServer
    And after killing the process and letting it restart, it looks like this
    $ ps axguw | egrep CPU\|UIS | grep -v grep
    USER             PID  %CPU %MEM      VSZ    RSS   TT  STAT STARTED      TIME COMMAND
    matt            9025   0.0  0.5  2580992  20772   ??  S    11:27AM   0:01.86 /System/Library/CoreServices/SystemUIServer.app/Contents/MacOS/SystemUIServer
    While it was in a state of high CPU consumption I looked at it with dtruss. The output was very repetetive and included a lot of open, close. open, fstat64, read, close cycles on two files:
    /Library/Preferences/SystemConfiguration/preferences.plist
    /System/Library/Frameworks/SystemConfiguration.framework/Resources/English.lproj /NetworkInterface.strings
    There were also a lot of geteuid() and a couple of interesting ioctl() calls. It looks like they were on an fd which is an unbound UDP socket, and they were request 0xC02869C9, which works out to _IOWR('i', 201, struct whoozis), where a struct whoozis is 40 bytes long. I'm not sure what this IOCTL is but maybe part of the 802.11 API?
    When I do dtruss on SystemUIServer when it is not consuming a lot of CPU, I see a lot more kevent() and
    workq_kernreturn(). There were just a few of those when the process was running hard, but they dominate the dtruss output during normal times.
    Here is a chunk of the abnormal-state dtruss output.
    geteuid(0x7FE15A218E30, 0xA0, 0x7) = 502 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    close(0xB) = 0 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    fstat64(0xB, 0x7FFF58A26200, 0x0) = 0 0
    read(0xB, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n<plist version=\"1.0\">\n<dict>\n\t<key>CurrentSet</key>\n\t<string>/Sets/EEDDA303-485 D-4C2C-8C7D-78C0345A827A</string>\n\t", 0x2458) = 9304 0
    close(0xB) = 0 0
    open("/System/Library/Frameworks/SystemConfiguration.framework/Resources/English .lproj/NetworkInterface.strings\0", 0x0, 0x1B6) = 11 0
    fstat64(0xB, 0x7FFF58A25838, 0x0) = 0 0
    read(0xB, "bplist00\337\020;\001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\02 3\024\025\026\027\030\031\032\033\034\035\036\037 !\"#$%&'()*+,-./0123456789:;<=>?@4ABCDE\fFGHIJKLMNOPQRSTUVWXYZ[\\$]^'_`abcd.ef1 ghijk7lmnoTiPad\\printer-port_\020\026thunderbolt-multiether]generic-etherTvlanX X-iPhoneTpptpUmodemZmultiether_\020\020irda-ircomm-portVbridgeT6to4Tbo", 0x7DF) = 2015 0
    close(0xB) = 0 0
    open("/System/Library/Frameworks/SystemConfiguration.framework/Resources/English .lproj/NetworkInterface.strings\0", 0x0, 0x1B6) = 11 0
    fstat64(0xB, 0x7FFF58A25838, 0x0) = 0 0
    read(0xB, "bplist00\337\020;\001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\02 3\024\025\026\027\030\031\032\033\034\035\036\037 !\"#$%&'()*+,-./0123456789:;<=>?@4ABCDE\fFGHIJKLMNOPQRSTUVWXYZ[\\$]^'_`abcd.ef1 ghijk7lmnoTiPad\\printer-port_\020\026thunderbolt-multiether]generic-etherTvlanX X-iPhoneTpptpUmodemZmultiether_\020\020irda-ircomm-portVbridgeT6to4Tbo", 0x7DF) = 2015 0
    close(0xB) = 0 0
    geteuid(0x7FFF74E0E848, 0x7FFF89C2AA82, 0xFFFFFFFF) = 502 0
    ioctl(0x5, 0xC02869C9, 0x7FFF58A265E0) = 0 0
    ioctl(0x5, 0xC02869C9, 0x7FFF58A265E0) = 0 0
    geteuid(0x7FFF74E0E848, 0x7FFF89C2AA82, 0xFFFFFFFF) = 502 0
    geteuid(0x7FFF74E0E848, 0x7FFF89C2AA82, 0xFFFFFFFF) = 502 0
    geteuid(0x7FFF74E0E848, 0x7FFF89C2AA82, 0xFFFFFFFF) = 502 0
    geteuid(0x7FE15A218E30, 0xA0, 0x7) = 502 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    close(0xB) = 0 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    fstat64(0xB, 0x7FFF58A264A0, 0x0) = 0 0
    read(0xB, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n<plist version=\"1.0\">\n<dict>\n\t<key>CurrentSet</key>\n\t<string>/Sets/EEDDA303-485 D-4C2C-8C7D-78C0345A827A</string>\n\t", 0x2458) = 9304 0
    close(0xB) = 0 0
    geteuid(0x7FE15A28CE30, 0xA0, 0x7) = 502 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    close(0xB) = 0 0
    open("/Library/Preferences/SystemConfiguration/preferences.plist\0", 0x0, 0x1A4) = 11 0
    fstat64(0xB, 0x7FFF58A26200, 0x0) = 0 0
    read(0xB, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!DOCTYPE plist PUBLIC \"-//Apple//DTD PLIST 1.0//EN\" \"http://www.apple.com/DTDs/PropertyList-1.0.dtd\">\n<plist version=\"1.0\">\n<dict>\n\t<key>CurrentSet</key>\n\t<string>/Sets/EEDDA303-485 D-4C2C-8C7D-78C0345A827A</string>\n\t", 0x2458) = 9304 0
    close(0xB) = 0 0
    open("/System/Library/Frameworks/SystemConfiguration.framework/Resources/English .lproj/NetworkInterface.strings\0", 0x0, 0x1B6) = 11 0
    fstat64(0xB, 0x7FFF58A25838, 0x0) = 0 0
    read(0xB, "bplist00\337\020;\001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\02 3\024\025\026\027\030\031\032\033\034\035\036\037 !\"#$%&'()*+,-./0123456789:;<=>?@4ABCDE\fFGHIJKLMNOPQRSTUVWXYZ[\\$]^'_`abcd.ef1 ghijk7lmnoTiPad\\printer-port_\020\026thunderbolt-multiether]generic-etherTvlanX X-iPhoneTpptpUmodemZmultiether_\020\020irda-ircomm-portVbridgeT6to4Tbo", 0x7DF) = 2015 0
    close(0xB) = 0 0
    open("/System/Library/Frameworks/SystemConfiguration.framework/Resources/English .lproj/NetworkInterface.strings\0", 0x0, 0x1B6) = 11 0
    fstat64(0xB, 0x7FFF58A25838, 0x0) = 0 0
    read(0xB, "bplist00\337\020;\001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\02 3\024\025\026\027\030\031\032\033\034\035\036\037 !\"#$%&'()*+,-./0123456789:;<=>?@4ABCDE\fFGHIJKLMNOPQRSTUVWXYZ[\\$]^'_`abcd.ef1 ghijk7lmnoTiPad\\printer-port_\020\026thunderbolt-multiether]generic-etherTvlanX X-iPhoneTpptpUmodemZmultiether_\020\020irda-ircomm-portVbridgeT6to4Tbo", 0x7DF) = 2015 0
    close(0xB) = 0 0

    Test in another account and in safe mode. Any difference?

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    Anyone seeing this problem while using this software and if so have you found a remedy? This never happened while using the 32bit versions of all these packages.

    My understanding is that windowserver is an OS X application independent of software used. My question is whether others have seen windowserver start hogging CPU time while this specific software was being used and any Mac remedies that solve the issue. It's not an Adobe question.

  • ITunes uses lots of CPU time when idle

    When iTunes is just sitting there with my Music Library displayed, Activity Monitor shows it's using a pretty consistent 22-25% of CPU time. I look at Activity Monitor once in a while and I've never noticed this before. I don't know if it started when I upgraded to iTunes 7.4.2 or not. Other Macs I have access to use close to 0%. I have repaired permissions, checked the hard drive, and waved the other dead chickens over it without any change. Obviously this soaks up a lot of machine resources. Any clues or ideas would be welcome.
    Steve

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  • Itunes 7.6.2 running really slow and hogging CPU

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    I'm also having the same problem. 100% CPU usage, and unresponsive. I thought it was the result of a hard drive migration I just did, but seeing that the same problem has come up for others so recently makes me think it's something else.
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    com.apple.message.messages_received: 0
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    com.apple.message.imessage_upgrades: 0
    com.apple.message.imessage_declines: 0
    com.apple.message.imessages_sent: 0
    com.apple.message.imessages_received: 0
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    com.apple.message.jabber: 0
    com.apple.message.google_talk: 0
    com.apple.message.imessage: 1
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    com.apple.message.one_on_one_style: com.apple.iChat.Styles.Balloons-ShowPictures
    com.apple.message.group_style: com.apple.iChat.Styles.Balloons-ShowPictures
    com.apple.message.incoming_bg_color: Automatic
    com.apple.message.outgoing_bg_color: Automatic
    com.apple.message.incoming_font: Default 12.000000
    com.apple.message.outgoing_font: Default 12.000000
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    <https://discussions.apple.com/docs/DOC-6174>

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    Firefox is a very busy piece of software. It's using large amounts of CPU time and disk access. It puts my usage at low priority, so I have to wait for some time to be able to use my pointer or keyboard. I don't know what it uses all that CPU and disk access time for, but it's of no use to me. It often takes off with massive use of resources when I'm not doing anything, and I may not have use of my pointer for several minutes. How can I shut down most of this so I can use the browser to get my work done. I just want to use the web site access part of the software, and drop all the extra. I don't want Firefox to be able to recover after a crash. I just want to browse with a minimum of interference from Firefox. I would think that this is the most commonly asked question.

    Firefox consumes a lot of CPU resources
    * https://support.mozilla.com/en-US/kb/Firefox%20consumes%20a%20lot%20of%20CPU%20resources
    High memory usage
    * https://support.mozilla.com/en-US/kb/High%20memory%20usage
    Check and tell if its working.

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