Tagged Questions
0
votes
1answer
53 views
Linux Load Average with CPU 1x2GHz
My load average shows 2.0 in 5 and 15 mins.
My CPU is 1x2GHz, I know that 1.0 = 100% but what about GHz? Does it affect that?
3
votes
1answer
40 views
How to identify what is causing sys% in top?
top on one of hex cores with hyper threading shows the following
Cpu0 : 2.3%us, 58.8%sy, 0.0%ni, 38.2%id, 0.7%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 4.7%us, 62.1%sy, 0.0%ni, 31.2%id, 0.7%wa, ...
0
votes
0answers
146 views
How can I use sar to track processor and memory usage?
I'm running some load tests on a application hosted on one of my server and I wanted to track the processor and memory usage over a period of time e.g. 30 minutes.
I've read that I can do this with ...
2
votes
1answer
90 views
'top' output baffles me
top - 18:22:21 up 98 days, 23:26, 4 users, load average: 2.73, 2.85, 2.60
Tasks: 210 total, 1 running, 209 sleeping, 0 stopped, 0 zombie
Cpu(s): 3.6%us, 2.5%sy, 0.0%ni, 87.7%id, 5.1%wa, ...
1
vote
1answer
114 views
How do I use cpulimit with ImageMagick?
I am converting (using ImageMagick) a directory of image files (using a bash for loop in shell).
I notice that "convert" is taking up a large amount of CPU use (88% and up). However, If I try to ...
2
votes
0answers
207 views
Dropbox causes xorg to use 100% CPU
For some time, I noticed that my xorg process uses up between 60 and 100% of the CPU (according to top). I also noticed that interactive work becomes sluggish, even on my multi-core i7 processor.
...
2
votes
1answer
281 views
linux: per-process monitor, every 10 minutes, with history access
I really didn't know a better way to ask my question, hence you get a horribly named question.
I will explain what i want to do, maybe that will help you help me.
I would like to have my linux ...
1
vote
1answer
104 views
Limiting I/O activity for a specific process - Linux
I run a convert *.tif bla.pdf command sometimes with say 60 images. Now this renders my computer unusable until it finishes.
I tried using nice and ionice but it did not help much.
Is there a way to ...
2
votes
1answer
161 views
Display CPU usage separately (without root privileges)
I need to display the CPU usage for each processing core on a single shared-memory 12-core (SMP) machine. I don't have access to install htop, else I would simply use that. I don't need fancy graphs ...
0
votes
1answer
108 views
Decrease CPU usage or give priority
I have a i3 2nd gen system with nvidia 1GB graphics card and running ubuntu .
The cpu usage becomes 99% when i run a 3D simulator and other OpenGL 2D application and i acquire the mouse movement data ...
1
vote
0answers
55 views
Backup on Debian interfering with other running programs
I've got a webserver on Debian 6. The system is also always running some processes sensitive to CPU usage. When I am using some of tools like rsync or tar, they are using CPU too much and my sensitive ...
2
votes
0answers
139 views
Why does cpu usage never reach 100%?
I have a dual-core processor. I'm running two instances of the program below:
void main(){
int i;
while(1){
i=i+1;
}
}
I run TOP and CPU usage gets up to 97%, however it never ...
1
vote
1answer
121 views
Limit CPU usage KSH script
I have a KSH crawler script that crawls filesystems on my network, and i would like to limit it to 25% cpu usage, so it does not impact running systems. I am currently using nice but when i run SED, ...
1
vote
3answers
322 views
Will multicore allow the same CPU usage as multi CPU [duplicate]
Possible Duplicate:
Multi-core CPU: can I say I have a 3x2.1GHz=6.3GHz CPU?
I plan to buy latop with with i5-2410M processor that have 2 cores (according to spec it can also have 4 ...
4
votes
2answers
468 views
How do I see the CPU load of a server?
What is the command to see CPU load of a RedHat Linux server?
0
votes
1answer
816 views
High CPU usage by virtualbox running windows 2003 in Linux host
I'm running a windows 2003 guest in Linux xiamx-pc 3.2.0-24-generic #39-Ubuntu SMP Mon May 21 16:52:17 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
I notice that virtualbox process constantly takes around ...
2
votes
2answers
3k views
linux migration/N high cpu consumption
on my linux appliance based on 3.0.0-14 kernel I got:
RPN:/tmp# ps axuf | grep migration
root 6 92.9 0.0 0 0 ? S Apr23 2788:33 \_ [migration/0]
root 7 99.7 0.0 ...
1
vote
2answers
933 views
linux ' top ' get total of a user's cpu usage > 100%, with IRIX mode off
I used ' top -bn 1 -u myaccount' to monitor the summary of all the cpu usage of my account.
But sometimes my log shows that the summary adds up to 160% plus.
I'm quite confused, does anybody know ...
0
votes
3answers
3k views
Strange cpuinfo, how many cores does these physical cpu has?
At the end of this post is my /proc/cpuinfo.
I know the Physical cpu number is 2
grep 'physical id' /proc/cpuinfo|sort|uniq|wc -l
2
But how many cores does each cpu have?
The 'cpu cores' shows ...
1
vote
1answer
890 views
ffmpeg not using full CPU power
I have a Dell Precision 490 workstation, running Ubuntu 11.10, with two dual core Xeon 5160 CPUs (so 2 physical CPUs, with 2 cores each), which I am using to encode TV recordings (MPEG2) to H264 using ...
0
votes
2answers
143 views
Why the startup of a new application causes system stuttering
All modern operating system are supports multitasking. So, each running app would get a certain amount of time slice from cpu for their operation(depending on their demand).
The questions is, if the ...
1
vote
0answers
180 views
Linux: X11 is using up 50% of one of my CPUs and lagging terribly
I have been running my Ubuntu Linux Machine recently on powerful hardware (much more powerful
than my last machine at any rate) and I have noticed that after some time all of a sudden X11 starts
to ...
5
votes
3answers
3k views
How to get I/O usage by process in Unix? [duplicate]
Possible Duplicate:
Linux: Is there something similar to "top" for I/O?
I am trying to do some CPU intensive operation on a Linux machine and it is showing very high load.
I want ...
7
votes
1answer
3k views
How to decrease the CPU usage when running Virtual Box?
I am facing an issue with 100% CPU usage under my system when running VirtualBox. Here are some further details:
My System Information:
CPU 1 name: Intel(R) Pentium(R) Dual CPU T2310 @ ...
4
votes
1answer
911 views
If “top” indicates CPU is spending 10% on %wa (iowait), does that mean the CPU is idle?
I am referring to the Linux top command. If it indicates 10.4% was spent on wa, does that mean 10.4% CPU was available for other processes?
top - 09:40:45 up 178 days, 34 min, 1 user, load ...
1
vote
2answers
154 views
Can I cpulimit fsck without problems?
My special laptop tends to overheat and shutdown under Linux unless I cpulimit demanding programs. Would there be a problem with using cpulimit to limit fsck?
Basically, the target process, which ...
1
vote
1answer
742 views
Top is showing % CPU > 100?
top is showing several processes with CPU % greater than 100%. What does this indicate?
0
votes
1answer
613 views
disparity between `top`'s given CPU % and process CPU usage total
I've noticed that there are sometimes (large) differences between the reported total CPU usage and a summation of the per-process CPU utilization given by apps like top and wmtop.
As an example: I ...
5
votes
2answers
4k views
Linux: command to know the processor number in which a process is loaded?
Is there any command in linux to figure out , given a process, which processor the process is running? I am interested in figuring out the CPU busy and CPU idle time of that processor.
7
votes
3answers
4k views
Why is the CPU usage reported by top in Linux over 100%?
I've seen the CPU usage go over 100%. How is this possible? Is it because I have four CPU cores, so 100% isn't really the max?
Also, when a program does this, what else can I do in top besides using ...
1
vote
3answers
113 views
Resources of minimized programs in Linux
When a program is minimized to the taskbar in Linux does it use less resources?
1
vote
3answers
1k views
Linux program to artificially create CPU usage
Since I own one of those Centrino based Core 2 notebooks that create annoying buzzing noises when idle (= entering C3 or C4 power saving states), I'm looking for a program that creates artificial CPU ...
0
votes
2answers
440 views
100% CPU Runaway Processes (NCurses?)
This is a problem I've had for years, but just haven't posted anywhere about it until now.
I'm running GRML, a Debian squeeze based Linux distro, and occasionally certain processes will runaway and ...
2
votes
2answers
4k views
Writing a CPU/RAM usage log over a period of time to file on CentOS
I'm looking for an application or line of code that would let me observe a process, save the info in a number of variables, then put the gathered info on a file.
I've been trying with variations of ...
2
votes
1answer
2k views
Understanding top output in Linux
I'm trying to determine the CPU usage of a program by looking at the output from Top in Linux. I understand that %us means userspace and %sy means system/kernel etc. But say I see 100%us. Does this ...
2
votes
2answers
2k views
How to cope with runaway Flash plugin in Google Chrome browser?
I'm using Google Chrome for Linux, version 5.0.307.11 (Official Build 39572) beta with the Linux Flash plugin version 10.0 r32. Quite often, the Flash plugin goes wild and pegs the CPU with about ...
24
votes
2answers
11k views
What does load average mean in unix/linux?
If I run uptime, I get something like this:
10:50:30 up 366 days, 23:27, 1 user, load average: 1.27, 2.06, 1.54
What do those numbers on the end mean? The man page tells me it's "the load ...
9
votes
2answers
2k views
Limit CPU usage for flash in Firefox?
How can we limit the CPU usage of Flash plugins in Firefox ?
I do not want to disable Flash, but I don't need to Flash objects to run at full speed either, in order to save battery power.
