jtbinuya

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Good day,

I have a webserver which is currently experiencing high cpu usage.

16:15:04 up 130 days, 22:39, 8 users, load average: 5.65, 5.47, 5.50
492 processes: 484 sleeping, 7 running, 1 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 85.0% 0.0% 2.1% 0.0% 12.6% 0.0% 0.0%
cpu00 84.4% 0.0% 2.3% 0.1% 13.0% 0.0% 0.0%
cpu01 57.9% 0.0% 4.1% 0.0% 37.7% 0.0% 0.1%
cpu02 98.2% 0.0% 1.7% 0.0% 0.0% 0.0% 0.0%
cpu03 99.8% 0.0% 0.1% 0.0% 0.0% 0.0% 0.0%
Mem: 8200508k av, 7756504k used, 444004k free, 0k shrd, 174840k buff
5234572k actv, 1549892k in_d, 180244k in_c
Swap: 16386292k av, 28388k used, 16357904k free 3042660k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
26643 appcsp 25 0 981M 981M 25204 R 16.7 12.2 83:26 2 java
27388 appcsp 25 0 981M 981M 25204 R 16.4 12.2 97:26 2 java
27661 appcsp 25 0 981M 981M 25204 R 16.4 12.2 73:14 2 java
27220 appcsp 25 0 981M 981M 25204 R 16.1 12.2 92:39 0 java
4487 appcsp 25 0 981M 981M 25204 R 12.4 12.2 94:48 3 java
=============

but when I try to grep the pid of the top processes above I get nothing. How can I kill the top processes. Is there any way to kill this.

[appcsp@pldtwebcache2 appcsp]$ ps -ef|grep 26643
appcsp 32178 30225 0 16:16 pts/7 00:00:00 grep 26643
[appcsp@pldtwebcache2 appcsp]$


Thanks

jtbinuya

Here's my update on the situation. I tried to kill one of the processes that was eating too much cpu and like magic the rest of the processes that were also utilizing high cpu load just disappeared. My utilization is now back to normal.

16:30:51 up 130 days, 22:55, 8 users, load average: 0.28, 2.06, 3.95
470 processes: 468 sleeping, 1 running, 1 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 3.6% 0.0% 0.8% 0.0% 0.1% 0.5% 94.7%
cpu00 2.1% 0.0% 0.5% 0.0% 0.3% 0.0% 96.8%
cpu01 8.5% 0.0% 0.1% 0.0% 0.1% 0.0% 91.0%
cpu02 2.5% 0.0% 1.1% 0.0% 0.1% 0.9% 95.0%
cpu03 1.1% 0.0% 1.3% 0.0% 0.0% 1.3% 96.0%
Mem: 8200508k av, 7119812k used, 1080696k free, 0k shrd, 174996k buff
4593056k actv, 1558792k in_d, 180756k in_c
Swap: 16386292k av, 28388k used, 16357904k free 3054860k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
22024 appcsp 17 0 899M 899M 25192 S 1.9 11.2 0:09 1 java
26166 appcsp 15 0 113M 113M 4260 S 0.2 1.4 9:02 3 webcached
26641 appcsp 16 0 899M 899M 25192 S 0.2 11.2 0:51 1 java
28977 appcsp 15 0 1744 1744 896 S 0.2 0.0 0:23 3 top
29244 root 15 0 1744 1744 900 R 0.2 0.0 0:22 3 top
26139 appcsp 15 0 113M 113M 4260 S 0.1 1.4 9:44 2 webcached
1 root 15 0 500 464 440 S 0.0 0.0 7:16 0 init


Still no answer on why I couldn't grep the process id.

Thanks

chakka.lokesh

try using ""ps aux"

jtbinuya

Thanks I'll try this when the situation pops-up again.

arckane

I would have said "ps -ef"

your_shadow03

Me: ps -auxf

jtbinuya

Thanks all for the suggestions. I'll try this when I get the chance and post the output.

vasmakk

... after you list all processes with ps command (see previous posts)
you can kill the process you want with
kill <processID>
e.g kill 956 kills the process with ID number: 956

Vas