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]
305 questions
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High I/O wait in apache tomcat server
Facing high I/O wait in apache tomcat server when the load increases. Suspecting disk I/O is less when tomcat is running however. disk IO seems drops drastically when tomcat is running along with the load. Other resources(CPU,RAM) are under…
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Centos 7 server performance problems. High load
I have a Centos 7 VPS at HostGator that has been very slow lately. HostGator have not been overly helpful in diagnosing the problem, insisting that everything is ok. The server is a 4 core VPS with 8GB of RAM. I figured out my cPanel backups are at…
John McAulay
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Why atop shows high CPU but sum of individual processes %CPU far smaller?
How can the sum of processes' CPU-% usage be lower than the total CPU load, according to atop and top , please? I have a CPU reaching very high load (87%, for several hours) even though the sum of the individual processes as shown by atop is muchs…
jucor
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Where is my memory being consumed?
I have a Ubuntu 20.04 server which is reporting relatively low free RAM: top - 11:28:31 up 5 days, 20:12, 3 users, load average: 0.18, 0.26, 0.27 Tasks: 268 total, 1 running, 267 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.1 us, 0.3 sy, 0.0 ni, 99.5…
Huskie69
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Which one is the cache value in the output of top?
On the book I'm reading, DevOps Troubleshooting, it says that the last value in the swap line is the memory used for file caches (yellow) in Linux so subtracting it to the used memory (green) gives you the actual used RAM: but when I run it on my…
Pablo Fernandez
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Centos 7 - High Load, low CPU, low IO wait, no processed maked as D
I've got a CentOS 7 VM which seems to be stuck with quite high load (8-10). CPU usage is around 25%, there is no IO wait and there are no processes marked as D in top. I've been looking around as much as I can but these seem to be the only three…
Ben Jones
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Number of virtual cores + how to know the right value
from lscpu we get the following lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 48 On-line CPU(s) list: 0-47 Thread(s) per core: 2 Core(s) per socket: 12 Socket(s): 2 dose output from lscpu means that we…
King David
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FreeBSD top disk io read write units
In FreeBSD you can run "top -m io" and it will show you disk io. For example: What units is the WRITE/READ in, bytes or kilobytes or megabytes?
Exocomp
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How can I adjust the name of a process I run?
I have a rack/ruby application on a server. I run it as follows: nohup rackup -o 0.0.0.0 -p 1234 & In the output of "top" command it appears as simply "ruby" PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 98421 my_user123 3 20 0 140M…
Kakki
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atop not working properly
I've (yum) installed atop utility in centOS 6.8. But when I run any atop command (eg: atop -a) , it is giving the following error in commandline. Malloc failed for current sysstats However, I'm able to open the raw log file using the command "atop…
More_pheus
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Why wordpress sites top -c showing that only index file is used
I am want to that Why wordpress sites top -c showing that only index file is used. What all request are handle by index.php? when every time i check top -c it's show as below: 743204 (Trace) (Kill) affinity 0 4.34 0.14 /usr/bin/php…
Shiv Singh
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Memory on dedicated server is filled out
We are managing a dedicated server (WHM/cPanel) with 4-5(Magento & Woocommerce mostly) accounts in it, along with custom code that will connect those platforms with ERPs. This custom code works a lot with MySQL. The server has 10GB of RAM and for…
kbariotis
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server not responding
The server is not responding and the top output shows the following: mysql is consuming more than 500% of CPU Will the server restart solve ths issue? Will I face the same problem after restart? # top top - 06:30:38 up 82 days, 17:43, 1 user, load…
shantanuo
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What do negative numbers under TIME+ in htop mean?
What do the red negative numbers I'm seeing displayed in htop mean? Should I be worried?
David Eyk
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High Load Average but Low CPU Usage
I'm trying to find the cause of the high load average on our server running in RHEL 8. The top command shows that our load average for 1, 5, and 15 is more than 250+. Also, server is responsive at the moment and no issues when running any jobs or…