The system load is a measure of the amount of work that a computer system is currently performing.

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23
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3answers
61k views

Why is ksoftirqd/0 process using all of my CPU?

I was feeling Ubuntu was running a bit sluggish, and then I went to see the processes running on it, and found one which was using something like 50% of CPU called ksoftirqd/0. Does anyone know what ...
19
votes
5answers
15k views

Why is Xorg taking up so much memory and CPU?

I recently reinstalled Ubuntu 11.04 Natty after a massive hard drive failure. Now, for some reason, compiz and Xorg decide it's a fun idea to start eating up my RAM and CPU - GB by GB. Starts out at ...
18
votes
2answers
3k views

What's the fairest way to monitor total CPU time - per user?

On a multi user system, I want to measure each user's CPU usage in seconds of cpu time. For the purpose of this measurement, I assume that if a PID belongs to a user, this user is causing the CPU time ...
12
votes
1answer
5k views

identify which chrome tab is using up CPU?

I sometimes have a bunch of tabs opened in Google Chrome, which I believe creates a new process per tab. I would like to be able to pinpoint the tab that is using up the CPU. Is there an easy way to ...
11
votes
1answer
4k views

How can I disable hud-service?

hud-service keeps eating my cpu. This is troublematic, specially because I'm running 12.04 in a Asus EEEPC. There are a lot of answers on how to change hud bindings, but what I reallyw wonder if there ...
10
votes
2answers
20k views

What's the difference between load average and CPU load?

Here's the output of top: top - 23:30:49 up 2:18, 1 user, load average: 4.36, 4.36, 4.39 Tasks: 105 total, 2 running, 103 sleeping, 0 stopped, 0 zombie Cpu(s): 3.6%us, 8.0%sy, 0.0%ni, ...
10
votes
1answer
2k views

Why doesn't htop display the same processes as top?

I have a home server sometimes running at a high CPU usage rate of about 50 to 70 percents. In htop, my favorite process manager, I can sort the processes by CPU usage, but often there isn't any ...
9
votes
4answers
9k views

tracker-store and tracker-miner-fs eating up my CPU on every startup

Whenever I start my laptop the process tracker-store and tracker-miner-fs eats up my CPU between 30-40% for 10-15 minutes. I am on ubuntu 12.04. What does these processes do? How to get rid of ...
9
votes
4answers
6k views

Compiz using 8% - 25% cpu continually

Any tips? Running Intel Core 2 Quad x64 ubuntu precise 12.04 Dell OptiPlex 760 nvidia graphics driver UPDATE: Unfortunately I uninstalled Ubuntu... Just couldn't deal with the incompatibilities and ...
9
votes
4answers
5k views

High Load, but nothing running?

I am not sure how this is even possible. Looking at top, my loads are often above 2, 3, 4.0, but I am over 99% idle. There is never a process at the top that is taking up anything, all my processes ...
8
votes
5answers
13k views

How to monitor & log server hardware temperatures & load

I am looking for a way to log & monitor my server hardware temperatures and load (like for CPU or RAM). How might I do that? Objective is to: ensure hardware is not heating up identify what ...
8
votes
1answer
10k views

How can I prevent [flush-8:16] and [jbd2/sdb2-8] from causing GUI unresponsiveness? [closed]

Approximately twice a week, the entire graphical interface will lock up for about 10-20 seconds without warning while I am doing simple tasks such as browsing the web or writing a paper. When this ...
8
votes
2answers
3k views

Why does my CPU usage keep spiking?

My CPU usage keeps spiking a lot. I can be sitting on my desktop and my CPU usage will go up to around 90%, according to Conky. Here is the output of top: PID USER PR NI VIRT RES SHR S ...
7
votes
3answers
731 views

How do I throttle a command in a terminal window?

I needed to run convert with a lot of images at the same time. The command took quite a while but this doesn't bother me. The issue is that this command rendered my computer unusable while the ...
7
votes
2answers
5k views

How to log CPU load?

How to log CPU load to a file in order to investigate a problem?
7
votes
1answer
7k views

why is rtkit-daemon eating 100% of my CPU?

I sometimes have an rtkit-daemon process eating 100% of my CPU and making the system unresponsive. I reboot and things are fine after that. What is rtkit-daemon supposed to do and why would it be ...
7
votes
2answers
4k views

How to log memory and cpu usage of an application?

Similar to question How to log CPU load?, I would like to log memory of a process. The process I want to log, is killed on a remote server, and I want to find out the CPU load and the memory usage ...
6
votes
6answers
1k views

Nasty CPU spikes that aren't connected to any visible processes

Really strange issue here. I intermittently keep getting really unpleasant CPU spikes, where the CPU gets to 80-90% busy across all cores for about 5 minutes. When I look at conky, in htop or system ...
6
votes
1answer
1k views

check-new-release process eating up resources on Ubuntu server 13.04

A small Ubuntu 13.04 virtual machine instance I run in a cloud environment regularly becomes slow/unresponsive because of a proces called check-new-release. Is there any way to disable this process ...
6
votes
3answers
11k views

Very High CPU usage (100%) from just browsing the Web

I tested on Firefox and Chromioum. Im at 100% while loading pages which causes them to load slow and when I dont have a application running Im at 40% CPU (At least) Everything is slow basically. Im ...
6
votes
3answers
2k views

High CPU usage when watching youtube videos (HTML5)?

When I watch a youtube video, especially in HD, the browser I'm using (chrome) will use in excess of 200% of the CPU. This causes the video to stutter and also makes my laptop very hot. Is it normal ...
5
votes
4answers
15k views

How to impove Ubuntu performance on netbook

Most recent Ubuntu 12.04 seems to be quite nice and Unity (3D/2D) works fine for me, however not on my old Acer Aspire One any more. There was a times, when I switched from Windows XP to Ubuntu and ...
5
votes
3answers
800 views

Why % CPU doesn't add up to 100?

Why doesn't the "% CPU" in System Monitor add up to 100? (% CPU is the third column on the following screenshot)
5
votes
1answer
7k views

'htop' does not show the correct CPU%, but 'top' does

While running mencoder with threads=4 (on a quad-core cpu). I've noticed that htop does not show its true CPU usage, but top does. It seems that htop is only reporting on one core. Is this a ...
5
votes
3answers
4k views

Why is Thunderbird pegging a core at 100%?

I have experienced 2-3 unexplained lockup over last 10 days. Today, I had a random lockup (no mouse, keyboard response, 100% CPU). But, when I finally switched (Ctrl-Alt-F1) to command line (it took ...
5
votes
1answer
4k views

gvfs-afc-volume-monitor uses a lot of CPU

In my Ubuntu 9.10 installation, I notice that the process gvfs-afc-volume-monitor causes my CPU core to go to 100% (that means for my dual-core machine to 50%). Killing this process helps, but I see ...
4
votes
1answer
741 views

root running emacs

Today, after about 20 minutes of logging in my Ubuntu 10.4, I notice the CPU and hard disk usage going up. top revealed that root was running emacs23. It is basically the same behavior described at ...
4
votes
5answers
7k views

Init process at 100% CPU usage

I have a Ubuntu x64 machine on a OpenVZ VPS account on a QuadCore processor with 1GB/2GB(burst). A few days ago I've managed to successfully update it to 11.10 Oneiric Ocelot. There's only one ...
4
votes
4answers
1k views

Does swap file usage increase disk I/O and CPU load?

Someone brought to my attention that if an application is using swap file (when system RAM is very low) it increases the disk I/0 and as a result of that, CPU use % and CPU Load increases. Is this ...
4
votes
1answer
1k views

Ubuntu One Taking up 40-170% of CPU usage with i5 processor

I am backing up all of my photos and docs, so I have purchased 160GB of storage. Yes, it is a lot of photos... I am finding that my system is running very slowly while the backups are taking place, ...
4
votes
2answers
2k views

How to setup Thinkpad features on Thinkpad T500

I have a IBM-Lenovo Thinkpad T500. I was previously a exclusive windows user, but recently installed ubuntu and loving it because of speed and interface. The only thing is that I don't get some ...
4
votes
2answers
5k views

What is process “/usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none”?

I am experiencing some serious performance issues with my Ubuntu 12.04 setup and thus looking for the culprit by running htop alongside my usual tasks. Aside from the usual suspects like chromium, ...
4
votes
2answers
455 views

How can I diagnose what process is using CPU time?

It's a "problem" that i have since 11.10, now I've upgraded to 12.04 (fresh install). Even while ondemand governor is set, and the computer is idle, fan goes on and doesn't want to shut down. Images ...
4
votes
2answers
372 views

How can I view the load average over a shorter time period?

uptime reports load averages over the last 1, 5, and 15 minutes. How can I view the load average over the last 10 seconds?
4
votes
3answers
2k views

How do I analyze my CPU usage over a long period of time?

I am just wondering if there's any Ubuntu app that can track my CPU usage. The problem is that I am currently using a quad core i5, whilst what I do most in daily usage is just browsing and rails ...
4
votes
1answer
502 views

Why is system load average around 9 on login?

I check my start up applications, disable them, but login take a long time and System Load is very high (about 9). this only happens on default user account, and I have this problem since 10.10 ...
4
votes
1answer
2k views

PulseAudio high CPU load and sound gets interrupted

Serious sound problems starting occuring about last week, with no particular reason. The problem is that all programs that send sound to PulseAudio, at some point stop playing sound, they continue for ...
4
votes
1answer
2k views

Lubuntu 12.10 cpu usage sticks at 100%

I've upgraded Lubuntu 12.04 to 12.10 via the update manager. Now when Lubuntu is loaded, the cpu usage drops to 0% for a few seconds then shoots up to 100% where it stays for 15 or 20 minutes. I ...
4
votes
1answer
3k views

High CPU usage with Team Speak 3.0.0-rc2

The CPU usage is always around 40 percent. I use push-to-talk and I had uninstalled pulseaudio. Now I use Alsa. I don't even have to connect to a Server. By simply starting TS the cpu usage goes up ...
4
votes
4answers
2k views

Is this CPU usage normal for Xorg?

I checked System Monitor to see if the frequency of my CPU increases without doing anything and saw that xorg is always using 10-40% of the CPU even if it's not doing much of anything on the desktop ...
4
votes
1answer
110 views

Can certain system-hungry modules be disabled?

Let me add some context: I am currently using Ubuntu 9.10 64-bit (Desktop) on a relatively powerful stationary PC (Intel Core i7 920, 12GB ram). My purpose is highspeed imaging with a pointgrey ...
3
votes
6answers
8k views

100 % CPU usage with “on demand” setting due to Xorg

I upgraded to Oneiric (from Natty) on my IBM Thinkpad X41. With the default CPU speed setting of "on demand" I get 100 % CPU usage. In System Monitor (nb: view > all processes) the dominant process ...
3
votes
2answers
156 views

How can I get my mysqld-swamped CPU under control? [closed]

I was AFK for about 24 hours and came back to find gnome-system-monitor saying all four CPU cores on my laptop were running at full throttle. mysqld is taking up more than one full core; when I tried ...
3
votes
2answers
652 views

Netbook freezes with high load on every IO operation

I have Acer EEE PC with SSD drives and ubuntu 10.10. It works fine - most of the time - but after boot or io-intense operation (copying file, installing updates, etc...) load increases to 2, stays for ...
3
votes
1answer
1k views

apport-gtk 100% CPU usage on startup on Ubuntu 14.04 LTS

I'm getting 100% CPU usage at startup consistently by apport-gtk as shown here. According to https://wiki.ubuntu.com/Apport, Apport shouldn't even be running on my machine since it's not a beta ...
3
votes
3answers
985 views

Nice command without root privileges

I need to run dosemu with nice --20 from script. Problem is: a negative value can be applied only with sudo. Do you know any way to run nice command without sudo or simply run nice --20 dosemu from ...
3
votes
1answer
2k views

What is fuser and why is it so processor hungry?

My computer became too slow and according to top fuser is consuming all available cpu time. What the hell is that? What do I have to do get rid of it?
3
votes
2answers
502 views

12.04 runs my CPU up to 99%

12.04 runs my CPU up to 99% and then lags to the point of having to shut down the laptop to restart it manually.Why is my CPU running so high and what can I do to fix it?
3
votes
1answer
1k views

How to compute PID cpu load?

Please help me to find a reliable way to compute (in a bash script) a jboss PID cpu load. To be specific, I don't know how to aggregate /proc/[pid]/stat fields to obtain the load a specific process ...
3
votes
1answer
1k views

How can I get instant CPU load values?

I have made a server-client application in which based on CPU usage and load conditions it serves a file request to user. I am using /proc/loadavg values for this . But this utility gives values ...