CPU Usage of Xcode while editing

Hi,
I have a early 2011 Macbook Pro 13, and i am a college student and use my mac for my college needs and also for some development work. I recently upgraded to Mountain Lion from Lion, and i found everything to be fine, until today i found out in Activity Monitor that, when i just opened a C++ file to edit it,not even an Xcode Project, just the file, Xcode was taking a very high CPU usage and it started warming the under side of the notebook as well after a few hours. This would not be the case when i had Lion. I am not sure if this issue is specific to Xcode 4.4 or something else.
Please help me get a solution for this..i do coding on the go as well and this eats battery a lot more as well.
Thanks

As mentioned in my post, i did not open an Xcode project to edit the code. i merely opened the folder containing my code in finder, double clicked the C++ file, which opened it in the Xcode editor. In this mode Xcode only gives me code completion and syntax help, but does not show live issues like errors or warnings, so i do not think that your suggestion will help.
In any case i tried your suggestion and it didnt seem to help

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    2014-06-22-233238_530x119_scrot.png ‏9 KB

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    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    %CPU PID USER COMMAND
    6.0 428 root /usr/bin/Xorg.bin -br -novtswitch -quiet :0 vt7 -nolisten tcp -auth /var/run/xauth/A:0-biq1sc
    3.8 3690 ben /usr/lib/firefox/plugin-container /usr/lib/mozilla/plugins/libflashplayer.so -greomni /usr/lib/firefox/omni.ja -appomni /usr/lib/firefox/browser/omni.ja -appdir /usr/lib/firefox/browser 3231 plugin
    2.4 4910 ben /usr/bin/systemsettings -caption System Settings --icon preferences-system
    2.4 14853 ben clementine -t
    1.9 3231 ben /usr/bin/firefox
    Also, the screen doesn't have to be asleep, the system just needs to sit idle for a few minutes.
    Last edited by hippieben (2014-09-20 19:10:58)

  • Firefox is eating up between 90% CPU usage to %230 CPU usage, while on a text-only page. I've tried many of the fixits. They didn't work. What can I do?

    I've cleared cookies multiple times
    I've emptied the cache
    I cleared my download history, and a majority of my browsing history
    I've tried having hardware acceleration for both flash and firefox on and off
    I turned off all my apps and plugins and when that did nothing I turned back on the ones I need. I never had a lot of apps to begin with. only a max of 5. I had quite a few plugins, but i disabled all but quicktime, flash, and silverlight. I have those three set on "ask to activate" so none are "always active" anymore.
    I also tried a couple things from the FAQ and forums here about changing a few settings in the "about:config" setup.
    A few of the above things initially worked, but after a day or two it'd be back to sucking up my CPU and memory. I would then try the same thing again, and this second time there would be no improvement.
    The real memory will fluctuate between 200 MB and 1.7 GB, and has done so for quite a while.
    Even after I've left streaming sites, and sites with lots of images, and I'm not downloading anything, the memory and the CPU will still do that. I only have a handful of tabs open at a timeusually, and all of them are mostly text. I'll quit and reopen firefox, which will initially bring the memory and CPU usage down, but it inevitably climbs up quite quickly, regardless of my tab usage. It'll be the same if I'm playing a flash game or scrolling through blogs.
    I never had any of these problems with Firefox 23, and my internet usage habits haven't changed at all. I had some of this slowness a few times with version 24, but nowhere near as bad as this, or as constant. Almost everyday I end up googling for other ways to speed things up. Everything I do never slowed down Firefox on earlier versions.
    I've tried all my usual tasks on Safari which will never climb above 30-40 MB of memory, even on netflix streaming, or flash games, and the CPU will average around 8 and 11%.

    i'm also having major CPU problems w/ FF 29.0.1. when i restart the app it calms down again but after loading tabs it steadily climbs up to 100% after not too long. i have checked out the 2 CPU links/articles above and do all the basic troubleshooting and tips, but with all the FF tools & add-ons isn't there some sort of CPU monitor that has the ability to display which extensions/scripts are hogging the CPU? Activity Monitor on Mac just shows the total used by the app. it's impossible in my case to efficiently disable dozens of add-ons & scripts, restart, and test each one by one b/c it can take several hrs before the CPU starts to spike high again. i have no time for this.
    thanks

  • After upgrade, high cpu usage while browsing

    not sure what happened. i performed a system upgrade, as detailed in my log:
    [2010-04-18 20:09] synchronizing package lists
    [2010-04-18 20:10] upgraded pacman (3.3.3-1 -> 3.3.3-5)
    [2010-04-18 20:10] synchronizing package lists
    [2010-04-18 20:10] starting full system upgrade
    [2010-04-18 20:16] upgraded acl (2.2.48-1 -> 2.2.49-1)
    [2010-04-18 20:16] upgraded libdrm (2.4.18-2 -> 2.4.19-2)
    [2010-04-18 20:16] upgraded libgl (7.7.1-0.1 -> 7.7.1-1)
    [2010-04-18 20:16] upgraded ati-dri (7.7.1-0.1 -> 7.7.1-1)
    [2010-04-18 20:16] upgraded bash (4.1.002-2 -> 4.1.005-1)
    [2010-04-18 20:16] upgraded openssl (0.9.8n-1 -> 1.0.0-2)
    [2010-04-18 20:16] Clearing symlinks in /etc/ssl/certs...done.
    [2010-04-18 20:16] Updating certificates in /etc/ssl/certs... 141 added, 0 removed; done.
    [2010-04-18 20:16] Running hooks in /etc/ca-certificates/update.d....done.
    [2010-04-18 20:16] upgraded ca-certificates (20090814-2 -> 20090814-3)
    [2010-04-18 20:16] upgraded curl (7.20.0-1 -> 7.20.1-1)
    [2010-04-18 20:16] upgraded db (4.8.26-1 -> 4.8.26-2)
    [2010-04-18 20:16] upgraded device-mapper (2.02.61-1 -> 2.02.62-1)
    [2010-04-18 20:16] upgraded dhcpcd (5.2.1-1 -> 5.2.2-1)
    [2010-04-18 20:16] upgraded hunspell (1.2.8-2 -> 1.2.9-1)
    [2010-04-18 20:16] upgraded enchant (1.5.0-3 -> 1.6.0-1)
    [2010-04-18 20:16] upgraded x264 (20100312-1 -> 20100410-1)
    [2010-04-18 20:16] upgraded libvorbis (1.2.3-1 -> 1.3.1-1)
    [2010-04-18 20:16] upgraded ffmpeg (22511-1 -> 22837-2)
    [2010-04-18 20:16] upgraded sqlite3 (3.6.23-1 -> 3.6.23.1-1)
    [2010-04-18 20:16] upgraded heimdal (1.3.1-3 -> 1.3.2-1)
    [2010-04-18 20:16] upgraded libcups (1.4.3-1 -> 1.4.3-2)
    [2010-04-18 20:16] upgraded gtk2 (2.20.0-1 -> 2.20.0-2)
    [2010-04-18 20:16] upgraded kbd (1.15.1-1 -> 1.15.2-1)
    [2010-04-18 20:16] warning: /usr/share/config/kdm/kdmrc installed as /usr/share/config/kdm/kdmrc.pacnew
    [2010-04-18 20:17] upgraded kdebase-workspace (4.4.2-2 -> 4.4.2-3)
    [2010-04-18 20:17] upgraded kernel26-firmware (2.6.32.10-1 -> 2.6.33.2-1)
    [2010-04-18 20:17] >>> Updating module dependencies. Please wait ...
    [2010-04-18 20:17] >>> MKINITCPIO SETUP
    [2010-04-18 20:17] >>> ----------------
    [2010-04-18 20:17] >>> If you use LVM2, Encrypted root or software RAID,
    [2010-04-18 20:17] >>> Ensure you enable support in /etc/mkinitcpio.conf .
    [2010-04-18 20:17] >>> More information about mkinitcpio setup can be found here:
    [2010-04-18 20:17] >>> http://wiki.archlinux.org/index.php/Mkinitcpio
    [2010-04-18 20:17]
    [2010-04-18 20:17] >>> Generating initial ramdisk, using mkinitcpio. Please wait...
    [2010-04-18 20:17] ==> Building image "default"
    [2010-04-18 20:17] ==> Running command: /sbin/mkinitcpio -k 2.6.33-ARCH -c /etc/mkinitcpio.conf -g /boot/kernel26.img
    [2010-04-18 20:17] :: Begin build
    [2010-04-18 20:17] :: Parsing hook [base]
    [2010-04-18 20:17] :: Parsing hook [udev]
    [2010-04-18 20:17] :: Parsing hook [autodetect]
    [2010-04-18 20:17] :: Parsing hook [pata]
    [2010-04-18 20:17] :: Parsing hook [scsi]
    [2010-04-18 20:17] :: Parsing hook [sata]
    [2010-04-18 20:17] :: Parsing hook [filesystems]
    [2010-04-18 20:17] :: Generating module dependencies
    [2010-04-18 20:17] :: Generating image '/boot/kernel26.img'...SUCCESS
    [2010-04-18 20:17] ==> SUCCESS
    [2010-04-18 20:17] ==> Building image "fallback"
    [2010-04-18 20:17] ==> Running command: /sbin/mkinitcpio -k 2.6.33-ARCH -c /etc/mkinitcpio.conf -g /boot/kernel26-fallback.img -S autodetect
    [2010-04-18 20:17] :: Begin build
    [2010-04-18 20:17] :: Parsing hook [base]
    [2010-04-18 20:17] :: Parsing hook [udev]
    [2010-04-18 20:17] :: Parsing hook [pata]
    [2010-04-18 20:17] :: Parsing hook [scsi]
    [2010-04-18 20:18] :: Parsing hook [sata]
    [2010-04-18 20:18] :: Parsing hook [filesystems]
    [2010-04-18 20:18] :: Generating module dependencies
    [2010-04-18 20:18] :: Generating image '/boot/kernel26-fallback.img'...SUCCESS
    [2010-04-18 20:18] ==> SUCCESS
    [2010-04-18 20:18] upgraded kernel26 (2.6.32.10-1 -> 2.6.33.2-1)
    [2010-04-18 20:18] upgraded kile (2.1b3-2 -> 2.1b4-1)
    [2010-04-18 20:18] upgraded libarchive (2.8.3-1 -> 2.8.3-3)
    [2010-04-18 20:18] upgraded libfetch (2.30-1 -> 2.30-3)
    [2010-04-18 20:18] upgraded libldap (2.4.21-1 -> 2.4.21-2)
    [2010-04-18 20:18] upgraded libpcap (1.0.0-1 -> 1.1.1-1)
    [2010-04-18 20:18] upgraded libssh (0.4.1-1 -> 0.4.1-3)
    [2010-04-18 20:18] upgraded libzip (0.9-1 -> 0.9.3-1)
    [2010-04-18 20:18] upgraded lvm2 (2.02.61-1 -> 2.02.62-1)
    [2010-04-18 20:18] upgraded mdadm (3.1.1-2 -> 3.1.2-2)
    [2010-04-18 20:18] upgraded mesa (7.7.1-0.1 -> 7.7.1-1)
    [2010-04-18 20:18] upgraded mkinitcpio-busybox (1.15.3-5 -> 1.16.1-1)
    [2010-04-18 20:18] upgraded ntfs-3g (2010.1.16-1 -> 2010.3.6-1)
    [2010-04-18 20:18] installed pm-quirks (0.20100316-1)
    [2010-04-18 20:18] upgraded pm-utils (1.2.6.1-4 -> 1.3.0-2)
    [2010-04-18 20:18] upgraded postgresql-libs (8.4.3-1 -> 8.4.3-2)
    [2010-04-18 20:18] upgraded qca-ossl (2.0.0-2 -> 2.0.0-3)
    [2010-04-18 20:18] upgraded psi (0.14-2 -> 0.14-3)
    [2010-04-18 20:18] upgraded python (2.6.5-2 -> 2.6.5-3)
    [2010-04-18 20:18] upgraded qt (4.6.2-2 -> 4.6.2-3)
    [2010-04-18 20:18] upgraded qtcurve-kde4 (1.2.0-1 -> 1.3.1-1)
    [2010-04-18 20:18] upgraded smbclient (3.5.1-1 -> 3.5.2-1)
    [2010-04-18 20:19] upgraded virtuoso (6.1.0-1 -> 6.1.1-1)
    [2010-04-18 20:19] upgraded soprano (2.4.1-1 -> 2.4.2-1)
    [2010-04-18 20:19] upgraded sudo (1.7.2p5-1 -> 1.7.2p6-1)
    [2010-04-18 20:19] upgraded syslog-ng (3.0.4-3 -> 3.1.0-1)
    [2010-04-18 20:19] upgraded taglib (1.6.1-1 -> 1.6.2-1)
    [2010-04-18 20:19] upgraded texlive-bin (2009.5-2 -> 2009.5-3)
    [2010-04-18 20:19] upgraded tzdata (2010g-1 -> 2010h-1)
    [2010-04-18 20:19] upgraded util-linux-ng (2.17.1-1 -> 2.17.2-1)
    [2010-04-18 20:19] upgraded wget (1.12-1 -> 1.12-2)
    [2010-04-18 20:19] upgraded wpa_supplicant (0.6.10-1 -> 0.6.10-2)
    [2010-04-18 20:19] upgraded xf86-video-ati (6.12.4-3 -> 6.12.192-1)
    [2010-04-18 20:19] upgraded xf86-video-vesa (2.2.1-1 -> 2.3.0-1)
    [2010-04-18 20:19] upgraded xorg-server (1.7.5.902-1 -> 1.7.6-3)
    but now, when i use rekonq (also tested arora; same issue), cpu usage for the browser shoots up to nearly 50% and stays there. also, pages don't load unless i move my mouse around. flash is worse as well.
    (note: after my upgrade, i got a black screen on booting up. i had to use the 'nomodeset' option to disable kms. this probably isn't related, but i thought it might be worth mentioning.)
    any ideas?
    Last edited by anti-destin (2010-04-19 16:58:41)

    you're right. i forgot that i made some changes to my igoogle page. the chat function is the culprit. adding it causes the spike. i've reported the problem. thanks for the help!

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