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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High Cpu usage flash 11 while videobroadcasting

Good day,
in flash 10 my avg cpu load was 50-60% while broadcasting 7-8 websites at the same time
in betatesting flash11 this has gone a little bit up but was still within margins
when the definitive version came out, i am only able to broadcast 3 sites with a CPU load of 90%
please tell me what i can do to lower cpu usage.

The linux version of flash has no hardware acceleration for most (it has mediocre acceleration if you have an nvidia card that supports vdpau), so it uses lots of cpu. On my laptop with a core i5 2.53 ghz, a 720 flash vid will use 20-30% cpu. The same video played in a native application like mplayer will use like 5% (and I don't even have any video acceleration enabled in mplayer because vaapi is buggy for me)
litemotiv wrote:Also check what you have set in /etc/adobe/mms.cfg
I recall reading somewhere that the mms.cfg tweak to force hw accel no longer works in flash 11, but I cant seem to find the source on that now.
Last edited by bwat47 (2012-03-03 19:59:19)

High cpu usage after a while

Sometimes, after a while, firefox (36.0.4) uses up 1 core of my CPU (is a quad core due to hypertreading). The way it happens is really strange. Many tabs without a problem until suddenly ff decides to floor it. This is alway in the run, not on startup or close. All add-ons need to ask my permissions to be activated, this includes flash.
On close, I ordered ff to clear all history and cookies.
Notes that could be important (The behavior encountered while using it. This varies from time to time):
opening new tabs (a lot or a few) => "heavy" load during site loading, then idling
==> The above makes sense
- same as above but load continues to be heavy. => could be some badly written javascript on the site, however, sometimes this occurs with sites I know have no stressful javascript
==> The above seems odd
- Browser is idle in the background (not actively using it). Then all of the sudden "lets floor it until closed".
==> The above seems pretty odd
- When confronted with high CPU usage, closing ff doesn't close it (the ff process remains active. Not a ff process, THE ff process). => High CPU usage remains
==> The above looks like that there is definitely something wrong here
This last one has some other things to keep in mind
- When it happens and I close ff, upon restarting it it will ALWAYS ask to close ff. After confirming to close it, it will start and behave normally.
- When killing ff via the task-manager, or other means like powershell commands, restarting it will result in an idle ff even after every tab is loaded again.
I hope this isn't a heisenbug and there is a solution to this, a reboot ff button would be a nice workaround though. I personally think that it must be some routine in the code that decides to go nuts for no reason.
If you need further details, feel free to ask.
Thanks in advance

Tried those before and tried them again. Unfortunately, the problem keeps repeating itself at random times. As said, sometimes it doesn't occur and sometimes suddenly it does. Keep the following things in mind about this, what seems like a heisenbug, behavior.
- opening new tabs (a lot or a few) => "heavy" load during site loading, then idling
==> The above makes sense
- same as above but load continues to be heavy. => could be some badly written javascript on the site, however, sometimes this occurs with sites I know have no stressful javascript
==> The above seems odd
- Browser is idle in the background (not actively using it). Then all of the sudden "lets floor it until closed".
==> The above seems pretty odd
- When confronted with high CPU usage, closing ff doesn't close it (the ff process remains active. Not a ff process, THE ff process). => High CPU usage remains
==> The above looks like that there is definitely something wrong here
As stated, a reboot ff button would be a nice workaround. I personally think that something like a tread must get stuck in some sort of infinite loop. Browsing in ff works just fine though. I just don't like the fact that I turns into a "gasoline guzzler".
Again, thanks in advance

CPU usage suspiciously high while idle

I have the following problem, help is very appreciated
Right after my computer finishes booting the CPU usage raises up to approx. 55% on both cores, I'll attach a screenshot to clarify.
What can be the cause of this?
To me, Xorg seems to be using more CPU than it needs.. still it's not 55%. The performance isn't bad either, the system works very well.
The screenshot http://dl.getdropbox.com/u/1811427/misc/idle.jpg
$ uname -a
Linux felipe-desktop 2.6.31-ARCH #1 SMP PREEMPT Tue Oct 6 00:48:55 CEST 2009 x86_64 Intel(R) Core(TM)2 Duo CPU E7300 @ 2.66GHz GenuineIntel GNU/Linux
$ top
top - 17:48:01 up 35 min, 3 users, load average: 0.28, 0.11, 0.08
Tasks: 107 total, 4 running, 103 sleeping, 0 stopped, 0 zombie
Cpu(s): 35.9%us, 18.5%sy, 0.0%ni, 44.9%id, 0.0%wa, 0.3%hi, 0.3%si, 0.0%st
Mem: 2057796k total, 840600k used, 1217196k free, 43768k buffers
Swap: 1020088k total, 0k used, 1020088k free, 344868k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1881 root 20 0 627m 42m 15m S 14 2.1 2:16.56 X
6263 felipe 20 0 40232 6136 2184 S 11 0.3 1:35.33 gconfd-2
6253 felipe 20 0 149m 7152 5516 R 4 0.3 0:40.75 gnome-session
14947 felipe 20 0 195m 34m 14m S 4 1.7 0:23.10 compiz
6259 felipe 20 0 11076 1524 820 S 3 0.1 0:34.75 dbus-daemon
7185 felipe 20 0 679m 121m 32m R 2 6.1 0:35.01 firefox
6267 felipe 20 0 215m 10m 7772 S 1 0.5 0:18.88 gnome-settings-
6285 felipe 20 0 399m 31m 20m S 1 1.6 0:10.30 nautilus
6323 felipe 20 0 162m 3044 1580 S 1 0.1 0:04.37 gnome-screensav
7592 felipe 20 0 197m 18m 11m S 1 0.9 0:06.89 gnome-terminal
6303 felipe 20 0 286m 36m 14m S 1 1.8 0:11.25 python
6284 felipe 20 0 229m 16m 11m S 1 0.8 0:11.05 gnome-panel
6273 felipe 20 0 36840 2080 1744 S 0 0.1 0:02.85 gvfsd
6311 felipe 20 0 145m 6792 5388 S 0 0.3 0:03.59 gdu-notificatio
6458 felipe 20 0 166m 8584 6368 S 0 0.4 0:04.06 notification-da
15615 felipe 20 0 324m 41m 18m S 0 2.0 0:03.91 gnome-do
1 root 20 0 3796 640 540 S 0 0.0 0:00.30 init
What else would be useful about my configuration?
Thanks in advance for any help

well well... looks like compiz WAS the problem after all... must've messed up while testing. So i 'found' a 'decent' workaround.
Deactivated compiz (set metacity as the WM) and removed compiz-icon from the startup applications, then i enabled metacity compositing (because i use both screenlets and docky)... and that's it, .. for now

Why Xcode 4 causes 100% cpu usage?

Dear all,
I have been annoyed by the high cpu usage of Xcode 4.0.2 when editing code. It is burning my MacBook! I think this may be related to the dynamic code checking. Any idea?
Cheers,
Li

dynamic checking?
Do you mean Instruments...?
AFAIK, it's always hungry, hungry hippo - the best defense right now is to use Xcode 3.2.6.
Xcode 4 isn't 'required' just yet, but it might happen later in the year with the next OS, which may help tame it a bit.

High CPU usage while buffering a video

I have a high CPU usage (over 40%) while only buffering this video.
IE10pre1
Firefox Nightly 20121229, protected mode enabled
Firefox Nightly 20121229, protected mode disabled
Opera Next
Chrome Canary
a) open this url: http://www.wimp.com/marsearth/
b) pause the video if it starts automatically
c) use task manager or process explorer to view the cpu/gpu usage
reproducible: mostly
Windows 7 SP1
Flash Player 11.6.602.108 / HWA enabled
TestPC: Gigabyte GA-K8NS Pro; AMD Athlon 64 Venice 3200+; 2x 1GB MDT DDR-400-CL2; Club3D HD4670 AGP; Samsung HD103SJ, SyncMaster 204BM

While we're aware of the issue, there's not much we can do about it. The modern security realities facing web browsers have made sandboxing a necessity.
There's a good explanation of what's happening here: http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html
Long story short, each video packet has to be passed from the browser to a medium-integrity broker process, then to the low-integrity flash player process for rendering. If an attacker manages to hijack the Flash Player thread, the process is low-integrity, which prevents the attacker from doing much with it. While it's not an absolute guarantee (nothing in security is), it raises the bar significantly for attackers.
The downside is that all of that extra message-passing consumes CPU cycles, especially if you're trying to fill an exceptionally large buffer as fast as possible. There's not a lot of opportunity to optimize this.
If you're fine with the risk, you can manually disable ProtectedMode on your machine. If you're only dealing with trusted sites, and you're not doing anything critical with the machine (work, banking, etc), then it's probably not a huge deal.
Ultimately, ProtectedMode is like a vaccine -- it's a herd-immunity thing. If the majority of people run it, exploits targeting machines without it are inconsistent and probably not worth pursuing when you look at the effort involved in developing an end-to-end exploit. If a large number of people disable it, it becomes economically attractive for people building botnets, and you'll have a problem if you're not using it.
To disable Protected Mode, add the following line to your mms.cfg file located in:
Windows 32bit: C:\windows\system32\macromed\flash
Windows 64bit: C:\windows\syswow64\macromed\flash
ProtectedMode=0
If the mms.cfg file does not exist, create one using any standard text editor (e.g.. notepad)
Depending on your operating system, you might need to first save the mms.cfg file to a writable location (such as your documents or desktop folder) and then copy the file into the destination folder using Windows Explorer.
To re-enable Protected Mode, simply remove the line from the mms.cfg file.

CCM process cpu usage

Hello!
We have 2 CCM subscribers. Their configuration, registered devices are nearly the same. (1300 and 1500 phones, 80, 90 h323 gateways). Node 1 cpu usage is 20%, while the others is always between 80-100%.
What can such a big difference?
(when I moved more than 400 phones and 1 vgw with 2 E1 lines, nothing changed!)
Thanks,
Bela

Hello!
MCS-7800 Intel Xeon 3.06 Ghz, 4G RAM
4.1(3)sr2
MGCP gateways (4 E1) is registered to the 20% node.
H323 gateways is nearly equaly registered to the two subscribers. (I mean their DP ccmgroup setting).
1 more interesting detail: the 20% node handles twice as many calls as the 90%.
Thanks,
Bela

System Performance window and CPU usage

The System Performance window shows two bars - what do these mean? My guess would be for dual cpu, on my quad only two show up but I assume that's because Apple needs to update to show all four?
Related question - when doing a torture test on my quad, Logic seems to show almost full CPU usage and choke while Activity Monitor only has logic using about 130% of available cpu (out of 400%). Processor load seems to be split equally between all four (none of which seem to be averaging over 50%). On a dual, how close does Logic get to 200%? Is there anything I can do to get Logic to use more of the available CPU power?
I'm running an assortment of softsynths, most with Space Designer (do longer verbs in SD use more CPU?).
Along these same lines, are there any standard Logic benchmarks?

They indicate multiple processors if audio is subdivided. It is most likely Logic hasn't got a CPU meter update-don't the quads simply operate as pairs per core-fuctionally similar to a Dual but when it comes to the processor the duties are split, as opposed to 4 procs it works more like 2 coupled...
Longer IRs require more calculations, they add up really fast, esp. at higher sampling rates-because the IRs convert to the host (session) rate, as opposed to the rate the IR is.

EA3: Performance (High CPU usage while editting PACKAGE BODYs)

EA3 seems to use a lot of processor time while editting PACKAGE BODYs. I created a simple test that repeatably (on my system) causes the EA3 to use over 90% CPU for about a minute. (Last test was 74 seconds.)
OS: XP 2002 SP2
Processor: P4 3GHz
Memory: 2GB
DB: Oracle 10 XE
In SQL*Plus:
SQL> create or replace package test as procedure a; end;
2 /
SQL> create or replace package body test as procedure a as begin null; end; end;
2 /
1) Opened EA3
2) Close Tip of the day
3) Click Connections
4) Click 10g XE
5) Click Packages
6) Click TEST
7) Right-click TEST Body and click Edit
8) Clicked before penultimate "end;"
9) Pasted:
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;null;
Another test is just to hold down the Enter key. After a few seconds, it reached 99% CPU and mostly stays there while holding the key.

Thanks, the developers are looking into this.
Sue

CPU Usage % While Editing Video

We get quite a few questions on why CPU usage is below 100% in some operations. This applies to both PrE and PrPro. Here is a THREAD (on PrPro, so there are some Pro-specific comments involved in the thread), and Harm Millaard has distilled the possibilities nicely in Reply #1.
Note: there is a link to the PrPro CS5 Benchmark. The site, and benchmark files and tests are not available for PrE, but when comparing hardware, the spreadsheet of the performance data from users' configurations, can tell one a lot, even if they are running PrE, and cannot actually participate in the benchmarking - the data in that spreadsheet is still VERY useful, when looking at various computer configurations.
Good luck, and hope that this helps others,
Hunt

1) Why video rendering is taking about 3h to render 2.2Gb wma file to make it HD 720p 29.97 with H.264 codec? CPU is loaded only 16-20%, have alot of RAM. Ou and tried both OpenCL and system only renderer no change in time needed or CPU load.
Because of the source material and the hardware. Wrong CPU, video card an not enough memory.
2) Does Mercury Playback Engine GPU Acceleration (OpenCL) means GPU usage mostly and system only - CPU usage?
Exporting is CPU based, the Radeon does not help at all. Tweakers Page - Exporting Style
3) Why is so low CPU usage I thought that doing something big like video editing CPU should be fully loaded..., but here I see that it as I said is using only 16-20% and 2-3 cores aren't even in use.
Again because of the source material / codec and the hardware. Typical of ill-threaded codecs and the CPU.
4) Is it ok for a recorded game video to be big like 2-5Gb after rendering in HD format, because I think if films 44 min HD quality are 350-400MB than game videos should be about the same.
44 min. of HD material can never be 350-400 MB of decent quality. 44 min of SD material (DVD) is already over 3 GB for decent quality. For HD, even on YouTube, count on at least 4-5 GB for 44 minutes or more.
5) Maybe there is a better video capture app than Fraps, Overwolf, raptr GVR (well looked fine but I couldn't edit the video, Adobe element showed black screen and played audio) so that I could easelly edit it with adobe apps.
You can't capture with any of the software you mention, Capture is only possible with tape cased cameras over firewire.
Your AMD 8-core CPU is not suited for video editing, it is even slower than a 4-core Intel, because of the lacking SSE support. See Tweakers Page - What kind of PC to use? Your Radeon is pretty slow for editing, Tweakers Page - What video card to use? and the amount of memory is limited.

LIRC - 100% cpu usage while pressing a button

Hi all.
I'm having some problems with latest lirc versions. It just uses 100% of my cpu while I press any key on the remote. For example, with xbmc, pressing a remote control button makes a one second video lag and frame dropping due to high cpu usage...
I'm using latest kernel and lirc in testing repo
Pinnacle pctv remote (and receiver, rs232 ou ttyS0).
I can't follow the wiki since kernel 2.6.25 (maybe), if i do modprobe lirc_serial (and before a setserial uart none), on irw, nothing happens. -> this used to work before.
I've edited /etc/conf.d/lircd in order to make this remote to work. I don't need anymore to load lirc_serial and remote works... but uses ALL CPU resources.
Solutions? Anyone with same problem?
Thanks friends:D
Last edited by TigTex (2009-07-08 02:11:22)

What about a "bump" to this...
Bump

Skype 4.2.0.11 has abnormally high CPU usage while...

Skype 4.2.0.11 has abnormally high CPU usage while idle.
I can't get my laptop under 70 degrees celsius unless I cpulimit or quit skype, and cpulimiting it actually makes it completely unresponsive, as if some other thread is constantly generating a lot of work and taking priority over the UI thread.
What the heck is skype doing? (And why do any of its threads need nice -10?) It takes up more CPU time than pulseaudio, truecrypt, and deluged combined.
Its CPU usage is constantly between 5 and 50 percent*, it's absolutely horrible.
*While idle. I'm unable to make calls.
I know this is expected from a linux user, but for all I know, Skype is malware. It's not open-source, so I can't find out for myself, and there are no open-source alternatives so the frankly shameful amount of bugs I encounter in Skype will never be fixed.
There are several bugs I'd love to be fixed in Skype, but first, PLEASE, optimize your code. It's absolutely horriffic at the moment.

Attached are statistics from my desktop over approximately a 24 hour period for the processes shown (other than firefox and adb).
Pulseaudio tops skype this time but that's because I've had music playing through mpd for a few hours. Skype uses more than 16 times the CPU that pidgin does, and almost double the RAM! RAM isn't shown in the screenshot but take my word for it. Bear in mind that I haven't taken (or made) any calls in this period of time, and pidgin has been signed into three different services and using encrypted chat.
I really wish that at least the protocol would be documented so someone could work around this, at the moment I don't think the guys writing skype realize just how unstable the linux port is. At least it's better than the Android port.
[Edit for those unfamiliar with linux processes: "TIME" is the cumulative time that the program has been scheduled for on any core, effectively making it a measure of total CPU usage for a given time period]
Attachments:
2014-06-22-233238_530x119_scrot.png ‏9 KB

High CPU usage while display is asleep

This is a strange one, and I've noticed it on multiple distros, and Arch is no different. When my system is sitting idle with the screen on my CPU usage hovers around 5%, which I would consider to be perfectly normal. However, when the display goes to sleep (no screen saver, just DPMS sleep) the CPU jumps up to about 25% and stays there until I bump the mouse (or do whatever to wake the system up), and then it will drop back down to the normal 5% CPU usage.
I had always thought it had something to do with Firefox, but I had Firefox closed while I was away at work today, and yet when I come home and wake my computer up my CPU usage graph shows that it's been at a solid 25% all day long.
Anyone have any ideas what this might be, or recommend a way to hunt down exactly what process is eating my CPU cycles while the display is off?
Thanks a lot, this has been puzzling me for some time now.
EDIT: I should add that I am running KDE, and have been on the other distros as well (to the best of my recollection). After realizing this it seems like this thread may be better suited for the Applications & DE forum, but I'm not sure... it could very well be something to do with the kernel or something to do with power saving. Please move if you see fit.
Last edited by hippieben (2014-09-07 00:17:46)

The CPU usage is not accounted for in the system monitor app. There's roughly 4% usage accounted for, yet there's a total of 29% being used.
The script doesn't seem to find anything either. High idle CPU usage kicks in maybe 3/4 of the way through, but the output doesn't seem to change from the beginning at all.
ben@arch-desktop:~$ for i in $(seq 1 20); do sleep 10 && ps -eo pcpu,pid,user,args | sort -rk1 | head -6; done
%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
%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!

CPU Usage of Xcode while editing

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