The top tag has no wiki summary.
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1answer
42 views
linux 'top' not showing all processes
I am running linux top command to see processes running inside qemu VM. Sometimes, a process does not appear in them, but if I run,
ps -eo psr,pcpu,comm | grep myprocessname
then the process is ...
1
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2answers
56 views
when we use “top -c” in Linux, which type of process is closed by brackets?
As the title said, which type of process is closed by brackets?
2
votes
2answers
209 views
Where has all my memory gone?
I have a linux server that keeps using up all it's memory and I can't see what is using it, running top igves the following response:
Tasks: 103 total, 1 running, 102 sleeping, 0 stopped, 0 ...
1
vote
1answer
76 views
Why does top report more than the theoretical maximum CPU usage of a machine?
I would like to know why I have a process being able to report a usage line like:
PID COMMAND %CPU
248 Xcode 983.5
… in top on a quad core CPU?
I understand it's wrong, but how come? I'm ...
2
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1answer
52 views
Can top show more than 100% in %MEM?
Can the %MEM value for a process show more than 100% in top output?Is this ever possible?
0
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0answers
62 views
incoherent CPU usage from `top`, KDE Plasma widgets on a nearly idle system
I'm seeing similar disparity between top's total and per-process CPU usage as this question noted (http://superuser.com/questions/194936/disparity-between-tops-given-cpu-and-process-cpu-usage-total). ...
1
vote
1answer
78 views
Linux Virtual Memory/Swap isn't being used
I think my virtual memory is not configured correctly on my MintLinux machine. I opened up a new IDE, IntelliJ IDEA, and my whole system appeared to freeze. I tried to TTL to the console but that did ...
0
votes
1answer
71 views
What is Solaris top command “SIZE” column?
I have a node.js process running on a Solaris box. In the top command view, the "RES" column which I guess represents the physical memory is constant and reasonable. However the "SIZE" column keeps ...
2
votes
2answers
70 views
Is there a more detailed version of top?
I'm testing some software on a particular four core machine. Is there an option for top or a similar utility that can tell how much each core is being used for a particular job?
0
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0answers
74 views
Is it normal to overworking of just one CPU when using openMP
When I use OpenMP in FORTRAN to parallelize a program on linux, ' top' command show me just one processor working ~%800 instead of ~%100 x 8 processors. Is it a expected situation ?
1
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1answer
99 views
“top” like utility for AMD GPUs on a headless machine
For monitoring CPU usage, there is top (well, I use htop). Is there a top-like utility for GPUs?
I have an ATI Radeon HD 4650 in a computer running Debian Squeeze (x86). Thing is, it's running ...
4
votes
1answer
84 views
0
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0answers
235 views
Difference between KDE CPU Monitor widget and top output
I'm running Kubuntu 11.04 and have a top screen and a display of the CPU Monitor desktop widget. There is a difference between CPU usage as per the widget and CPU usage as per top. For example I've ...
2
votes
2answers
194 views
Why does the memory usage in “top” not add up?
I have noticed that sometimes when I run top, the memory usage of each process in the process table does not seem to add up to the total.
For example, in the dump below, top says that I am using 16 ...
7
votes
3answers
742 views
Filtering top command output
I'm running a Mac and want to filter the output of the top command for a particular process such that only the PID, COMMAND and %CPU columns are displayed.
After getting the PID of the process, I ...
0
votes
1answer
104 views
showing cpu eating process
when my mint laptop tries to connect wireless, i noticed the increase in load but I dont see a process in top.
How we can find these processes.
top - 16:01:09 up 11 days, 6:08, 2 users, load ...
4
votes
1answer
296 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 ...
0
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4answers
375 views
memory usage linux in top is not correct
I am a bit worried about my linux vserver box.
No more memory is left.
To investigate this issue, i was looking at "top". But it deeply confuses me.
It seems that no more memory is left, altough ...
1
vote
2answers
657 views
TOP command memory usage
Under SuSE, (Mem: 31908592k total, 31421504k used,) how do i know which process or program using my memory?
1
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2answers
58 views
comparing resources using top
Fedora 15 Alpha
3861 user 20 0 904m 128m 33m S 0.7 6.4 1:11.52 xulrunner-bin
1323 user 20 0 1555m 95m 31m S 13.5 4.8 4:06.87 gnome-shell ...
1
vote
1answer
139 views
What I should know about memory management?
first of all:
I don't use stackadmin or similar so please don't vote for moving there,
I'm reading man top and paper "what every programmer should know about memory ..."
I need really simple ...
3
votes
1answer
93 views
What top-like utility is this?
I've seen this utility in a lot of tmux screenshots. What is it?
(source)
1
vote
1answer
318 views
Why do I see 100% CPU spikes when looking at htop?
Occasionally, when looking at htop, I'll see my CPU spiking to 100%.
However, when I sort my running processes by CPU utilization, they don't sum to 100%. They don't even come close.
What "hidden" ...
0
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0answers
105 views
Open-source solution for remote simple machine monitoring
I would like an open-source solution to monitor machines through a Web interface. But I just want two pieces of information:
Which machines are turned on/off (or online/offline)
Something like the ...
1
vote
2answers
277 views
How do I scroll through my list of processes when I use top on terminal (mac)?
When I use top not all the processes fit on one page. How do I scroll through them?
2
votes
1answer
2k views
top says IOWAIT is high, how to I find the culprit processes
I know I should not do it but I run some Ubuntu system from an USB flash drive, in persistent mode, and it is painfully slow.
"top" tells me it is not because of CPU, it is because of IO, ie high ...
1
vote
2answers
407 views
Firefox go to very first page in history stack
I'm looking for a feature / shortcut / add-on that makes the current Tab go back to its top at the very first page that was loaded on that tab (usually google.com on my FF).
Reason:
Clean the tab ...
1
vote
2answers
62 views
Is it possible to change default behavior for “top”?
For example, when I run top I usually press "C" so I can see the explicit command being run not the executable name if you will.
Is there a way I can modify top such that when I do:
% top
The ...
1
vote
1answer
578 views
Difference between nice value and priority in the top output
top, by default, lists both columns. I am curious as to what is the difference. I checked out the man pages and cannot figure it out:
Priority:
h: PR -- Priority
The priority of the task.
...
1
vote
1answer
280 views
Top is showing % CPU > 100?
top is showing several processes with CPU % greater than 100%. What does this indicate?
0
votes
2answers
279 views
Specify top's screen width in batch mode
I am logging the output of: top -b -n1 -c so I can keep track of which processes are using how much memory and CPU each minute. When top shows the full command line (-c), the command line text gets ...
1
vote
1answer
865 views
Is it possible to 'hide' a process from the listing of `ps` or `top` on Linux
First, I presume that if this is possible it would need to be done as root (or as a user who shares root's UID of 0).
How can a process be launched so that it does not show up in a ps aux or ps ef or ...
0
votes
1answer
333 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 ...
4
votes
2answers
2k views
Linux “Top” command for Windows Powershell?
I am looking for a PowerShell cmdlet that can provide similar functionality to the Linux Top app. Something that refreshes at some given interval and displays the process list with CPU % util.
I have ...
2
votes
3answers
557 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
2answers
1k 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 ...
3
votes
2answers
755 views
Where is my CPU usage going?
My Ubuntu 10.04 Lucid virtual machine is saying it's at 100% CPU usage... but all I'm running is Thunderbird. According to top, CPU usage should be ~25.9%... How do I interpret this conflicting output ...
0
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3answers
181 views
How can I free memory on linux
When I use top to see memory usage, I have 65gb ram but only 1.3gb of it free and remaining is shown as used. When I ran my program It gives memory insufficiency error. Although no other program is ...
2
votes
1answer
1k 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 ...
4
votes
2answers
1k views
Linux: Is there something similar to “top” for I/O?
My disk often is utilized, but top (and htop, a custom replacement) show nothing suspicious.
Is there a way to sort processes by I/O (more specific: disk) utilization?
EDIT
Found out using iotop ...
5
votes
1answer
549 views
How does top calculate the memory figures on Linux?
I'm a bit confused on how the memory figures add up in top.
If I've understood correctly, the amount of "really" used memory is total - free - buffers - cached. In the example below that would be ...
4
votes
4answers
643 views
individual cpu % in 'top' output
Usually to view individual cpu % we press '1' in the interactive mode of top.
However I am not able to figure out the logic to get the same output in batch mode i.e,
top -n1b
I am redirecting this ...
2
votes
4answers
42 views
automate: finding non-used servers from a list of servers
i posted this on stack overflow but a user recommended i post here. sorry for cross posting:
0 vote down star
i have access to a few linux clusters at school. sometimes they are busy and ...
0
votes
1answer
422 views
Color-coded top in FreeBSD
In Ubuntu (karmic), I can issue top and then press 'Z' or 'B' to color-code or enable bold.
Is there any way (hack or otherwise) to do this in FreeBSD (7.2)?
3
votes
2answers
337 views
%CPU for a process
Looking at the output of top on our server, one of my colleagues told me that the fact that some processes got less than 100 "%CPU" was because I was running too many processes. He added that based on ...
3
votes
1answer
1k views
Cpu usage in the output of top
I am looking at the output of top.
top - 16:11:19 up 31 days, 2:37, 10 users, load average: 17.01, 16.99, 17.00
Tasks: 470 total, 18 running, 452 sleeping, 0 stopped, 0 zombie
...
1
vote
1answer
1k views
average load and total %CPU in top
I thought the average load by uptime and the summation of %CPU of all running processes in top (#9 column) should agree. But it seems not true. Here is my little experiments:
On one server:
$ top -b ...
0
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1answer
618 views
Memory percentage in top (linux)
Just wondering
(1) is the memory percentage in top for a process is relative to memory or relative to memory+swap?
(2) if it is the former, how can I get the latter? Vice versa.
(3) To determine ...
4
votes
3answers
411 views
Where does the command “top” get its information from in linux?
Which files does the linux command "top" read from in order to build its table of data? Specifically, I'd like to be able to find the data for the "command" column based off of a PID.
