Questions tagged [top]

Question 1

I wrote a custom shell command using the top command, in order of getting the sum memory usage for all the processes of a given program (for example java*, mongodb*, etc..) in a Linux based servers: ...

Question 2

I'm currently using top to gather the most resource intensive processes and sending them to influxdb. Currently, the command is like this: top -bn1 -c -w250 Which basically runs top a single time (-...

Question 3

On 7.9 redhat os. I was told by our admin server that load average (can be seen using top) of my server should not be upper than 1. but our 3 servers have a load balancing that is equal to 7.78, or ...

Question 4

Ubuntu host with 100% utilization in top or htop. When I inspect the running processes, I don't see a process consuming a significant amount of CPU resources. I've tried using commands like top, htop, ...

Question 5

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 ...

Question 6

I'm trying to understand the top command, php-fpm is taking too much %cpu but the CPU on top is always very low why is that happening, and where to start to maybe tune it?

Question 7

EDIT: This ended up being a scrub process. Run zpool status -v and read the scan status for your pool clearly. I have a TrueNAS server running FreeBSD and this morning at 12 AM the disks started to be ...

Question 8

I'd like to see the current load (cpu + mem) of my Server (rhel 7.x) in a graphical fashion and only have top (and other built-in commands) available, tools like htop (that need to be installed) are ...

Question 9

Can someone please help explain this, I have always used to interprete the "g" in top output to be size in Gigabytes even though the convention is to use uppercase "G" but now I am ...

Question 10

I want to periodically monitor the CPU usage and plot in time series. Not having much knowledge, I plan to use the top command, something like this question (Monitor cpu usage (and perhaps memory ...

Question 11

I have a sidecar container with the following resources: resources: limits: memory: 512Mi requests: memory: 64Mi However, when I run top, I see this: envoy & pilot-agent seem to be ...

Question 12

I have a program that reads data from shared memory and send it to a non-blocking socket in a single-threaded manner. When I'm hammering the traffic into that application, I can only see the TOP cpu ...

Question 13

I've read this answer about understanding top, as well as man top, but I think I still have trouble turning the presented data from top into actual information. I'm logged on an Amazon EC2 instance ...

Question 14

I use this command "kubectl top pods" using Kubectl command I need path api for this command I need return data from this command "kubectl top pods" via api

Question 15

I'm trying to get to the bottom of an issue where the oom-killer is killing certain jobs off on a server. The server has 48GB of physical ram, with 20GB of swap, and I'm trying to find out what ...

Question 16

We are using a centos 7 server. The free -m command has the following output. [root@211 ~]# free -m total used free shared buff/cache available Mem: 31841 ...

Question 17

So I cant seem to find any information ANYWHERE on what this process, "sysnetd", does. I've run LSOF etc but nothing seems to provide any info I know what to do with. The /proc/pid folder ...

Question 18

I have an odroid XU4 running the manufacturer-provided minimal Ubuntu 18.04. Every few seconds (it's not really consistent, but think between 5 and 30) I get a call to lsb_release. Sometimes it gets ...

Question 19

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 ...

Question 20

I am running Debian 10 (kernel 4.19.0-18-amd64) on bare metal and I have recently noticed strange CPU usage. Screenshot of htop, sorted by CPU% Screenshot of top, sorted by CPU% As you can see, 100% ...

Question 21

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 ...

Question 22

Using the "top" command (or a similar command) in Linux, is there anyway to show the vhost that an apache process is associated with in /var/www/html? I have 250 websites on a linux server, ...

Question 23

I am on CentOS 7 and using atop v2.6.0 If I run atop manually with the following command everything runs as expected and the log is written to every 10 seconds: /usr/bin/atop -w /var/log/atop/...

Question 24

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 ...

Question 25

I realize that processes that run inside Docker containers appear on the hosts' process list: # ps aux | grep mariadb root 12486 0.0 0.0 112812 976 pts/0 S+ 14:47 0:00 grep --color=auto ...

Question 26

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 ...

Question 27

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 ...

Question 28

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 ...

Question 29

Recently I saw that my server Ubuntu 18.04 LTS has a high usage of buff/cache memory. free -mh total used free shared buff/cache available Mem: 7.8G ...

Question 30

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 ...

Question 31

just recently we started to see high CPU pressure on one of our machines. All our machines are running Linux Debian and we use vmware under the hood. We have hot added new CPUs and they're online in ...

Question 32

I run ./install.sh and I tried to background it to be able to close the ssh session. But after running bg the process is again outputting to the terminal. Also, I don't see anything with jobs. ...

Question 33

I have a Debian 9 server and the load is over 4000. "top" claims there are 18,132 processes sleeping. Initially, I saw many "ps" processes, hundreds, so I killed them all by name. I don't see any ...

Question 34

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?

Question 35

I created a container, in which I've created ~10 processes. I want to analyze how much memory they're consuming. To achieve that, I ran top inside the container, and docker stats outside. In top, I ...

Question 36

I have a cronjob that executes every minute that uses awscli s3 sync command for syncing my website with a S3 bucket. It seems the command sometimes run for a very long time for no apparent reason : ...

Question 37

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 +%Y%m%d` LOGPATH=/var/...

Question 38

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?

Question 39

I have a Ubuntu server running in EC2. Occasionally, I get a large CPU usage 99+% utilization as measured in EC2 monitoring dashboard, even though most times it is less than 10%. Since traffic to my ...

Question 40

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 ...

Question 41

I find it quite confusing to differentiate threads and processes when I run top and then press H or run ps -Hef. I know that they share the same attributes, which makes them similar but was wondering ...

Question 42

The username column in the output of top command shows a + for the names that are longer than the column width. How can I increase that? I don't see any option for that.

Question 43

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, ...

Question 44

Why does "top" command shows two different values for a Linux server with only just one CPU. I understand that it can differs when there is a multi core processor but in this case I'm using a AWS ...

Question 45

I have a KVM single core VPS optimized for hosting static content running only Nginx 1.13.8 with SSD and 1GB RAM with a hosting provider on a package of 100 Mbit/s unmetered bandwidth. OS in use is 3....

Question 46

I've been able to calculate unshared memory use by summing anonymous and stack mappings from pmap -x e.g. sudo pmap -x $THE_PID |egrep 'anon|stack' | awk '{print $2}' | paste -sd+ | bc but can't find ...

Question 47

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?

Question 48

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. ...

Question 49

I have an Amazon EC2 t2.medium instance that is showing very strange CPU Steal Time values, mostly large negative numbers and also very high idle CPU numbers. Anything that explains such strange ...

Question 50

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 ...