top is a Unix/Linux/BSD program to show what processing are running. It can show the top users of CPU or memory.
Questions tagged [top]
302 questions
2
votes
4 answers
Is there an easy way to insert data/time in front of a log file with just shell scripting?
Say I want to monitor memory usage on a java process overnight.
I can do something like
top | grep java > out.log
I will get a log file with a whole bunch of lines.
Is there an easy way to get a data/time inserted in front of each line?
James Dean
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2
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4 answers
On a freeBSD box - CPU idle from TOP is 0% but no process taking up cpu
On a freeBSD box, when I do TOP after starting a process x:
CPU states: 34.4% user, 0.0% nice, 64.8% system, 0.8% interrupt, 0.0% idle
Here, 0% idle.
But the highest cpu using process is x which is just using about 3%. and there is no other…
hari
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2
votes
2 answers
Exclude a process from being listed in `top`
Is it possible to exclude some processes from being reported by top?
For example, I would like to exclude itself from its listing (ie, I don't want top to show in the process list).
I would also like to be able to exclude processes that do not…
warren
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2
votes
2 answers
Provide Description for a Command for 'ps' Command Visibility
So the problem I want to find a tidy solution for is that when I log into a server (I have some Solaris and RHEL instances about), I try to find out what applications are running:
$ ps -auxww | grep
And I get a nice…
Nick Klauer
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1
vote
3 answers
Interpretation of server HTOP - is server Overloaded?
I have a server, which has 12 Cores, and usage is 42. What does it mean?
As far as I know 1 i 100% of one core. So 42 is 100% of 42 cores?
Gacek
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1
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1 answer
How to change interval of atop log?
My system is centos 7.4 with atop 2.3.0
I want to change atop log interval from default 600 to 300,then I vi /usr/share/atop/atop.daily as below:
#!/bin/bash
CURDAY=`date…
kittygirl
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1
vote
0 answers
How virtualization affects Linux guest reports of CPU usage?
We have a Hyper-V guest with 4 virtual cores reporting 50% usage total among all the virtual cores. That is, this 50% is what atop and top report, with a complementary 350% of "idle". That means at least in theory, 12.5% of total virtual CPU…
dsign
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1
vote
0 answers
Invalid cpu values in top for EC2 AWS instances
We are seeing what appear to be invalid values in top on more than one of our AWS instances:
top - 08:44:56 up 259 days, 17:31, 1 user, load average: 0.01, 0.02, 0.01
Tasks: 78 total, 1 running, 77 sleeping, 0 stopped, 0 zombie
Cpu(s): …
user1167223
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1
vote
2 answers
Is there a way to find what processes are in nice CPU top list?
I have a top output that shows a high amount in nic CPU percentage.
Is there a way to see what those processes are? And is it possible to do it from top?
user55570
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1
vote
0 answers
Inaccurate memory usage reading under OpenVZ?
I have got an OpenVZ-based VPS running CentOS 7.4 (Linux hostname 2.6.32-042stab116.2 #1 SMP Fri Jun 24 15:33:57 MSK 2016 x86_64 x86_64 x86_64 GNU/Linux).
The workload is a single Java application. According to top, the java process consumes about…
minexew
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1
vote
3 answers
Why one process is taking so many resources
My website is being very slow or non-responsive. A quick look at the top command shows me something like this:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1709 mysql 20 0 828m 432m 5584 S 382.6 5.4 7414:24…
6bytes
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2 answers
Top command - overall cpu usage is lesser than process' cpu usage
top - 14:51:31 up 11:24, 5 users, load average: 0.79, 0.95, 0.97
Tasks: 173 total, 2 running, 171 sleeping, 0 stopped, 0 zombie
%Cpu(s): 9.1 us, 4.5 sy, 0.0 ni, 85.5 id, 0.0 wa, 0.0 hi, 1.0 si, 0.0 st
KiB Mem : 32601524 total,…
Mahesh
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vote
1 answer
Cpu usage percentage with Top
I'm evaluating performance of a software on a server.
To do that I'm watching at Top command output.
Anyway sometimes the process exceed the 100% cpu usage. How this is possible? What means 120% cpu usage for example?!?
Akinn
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1
vote
2 answers
How much of my memory is actually used?
I have a VPS with 8 GB of memory running mainly docker containers.
When I go to the cloud monitoring service provided by my provider, I see that ~10% of the RAM is used.
I don't understand how this value is related to the output of the three…
Holt
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1
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0 answers
Why do top and csysdig give different memory usage information?
I loaded a large dataset into memory in python as follows:
data = dict(np.load(open('/path/to/data', 'rb')))
free and top (and also htop) both show that a lot of memory is in use:
$ free -h
total used free shared …
gmr
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