[SOLVED] Unable to monitor cpu usage on VPS

danjde · 08-18-2018, 10:06 AM

Hi Friends,
on one of mine production VPS Debian Jessie (virtualization based on KVM),

Quote:

Linux server 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt25-2+deb8u3 (2016-07-02) x86_64 GNU/Linux

since a few weeks, I realized that I can not view the cpu(s) usage, for example from "top
I've installed "htop" and I get inconsistent information:

https://ibb.co/doyzNe

Running "watch -n1 cat /proc/stat" obtain:

Code:

cpu  37486458 0 2008795 1365458555 14850239 626 378567 173447888857 0 0
cpu0 18006783 0 740960 322104780 6576053 626 278439 788515750535 0 0
cpu1 7702044 0 494503 344716616 3935670 0 43854 789701599039 0 0
cpu2 6453449 0 417163 348017606 2503787 0 28982 935384686954 0 0
cpu3 5324181 0 356168 350619552 1834727 0 27291 1349194667069 0 0
intr 1804989053 5 14 0 0 0 0 3 0 1 0 1028772 0 584 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 461047849 531 0 36785126 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 2483293724
btime 1530969547
processes 430988
procs_running 1
procs_blocked 0
softirq 1872853504 1 494345124 93 640007548 0 0 2951 225925903 532225 512039659

do you have any suggestions or idea why?

Many many thanks!

Davide

Habitual · 08-18-2018, 10:24 AM

Suggestions for what? Ideas for what?

Explain how top worked then didn't for you please. Thanks,.

rtop
30 Linux System Monitoring Tools Every SysAdmin Should Know
try the sar utility in the sysstat package

olidev · 08-31-2018, 02:01 AM

htop commands work fine for me. I am hosting PHP app on DigitalOcean. I didn't installed the htop as it was preinstalled. You shouldn't face any difficulty with this. This is not something that complicated. It is a simple ssh command. Maybe you didn't installed it correctly?

danjde · 09-01-2018, 04:50 AM

I don't know why but a VPS reboot has solved the issue. Now "top" or htop" (and others) workds great!

Some kernel functionality that did not start correctly?!?

marcela · 09-01-2018, 05:37 PM

Basically, there are two steps that need to be considered. Use the command top to see the server along with w and uptime commands. The top is important to monitor the server load and by the command c, you can see CPU usage. [removed] also uses this commands for its own AOL server.

rtmistler · 09-02-2018, 11:57 AM

@Marcela,

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