How to find which Process is causing High CPU usage
ps -eo pcpu,pid,user,args | sort -k1 -r -n | head -10
Works for me, show the top 10 cpu using threads, sorted numerically
top will display what is using your CPU. If you have it installed, htop allows you more fine-grained control, including filtering by—in your case—CPU
In addition to ps and top commands, you can also run vmstat to figure out what is happening in terms of CPU, memory usage on the system, i.e.:
vmstat 1 100
With the above, you get 100 samples a second apart of various stats. When the r or b column has a number (higher = more resources used) there is a script that is blocking. r is CPU, b is generally IO blocking such as disk or network.
Example output:
$ vmstat 1 100
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 0 0 288700 17592 1920048 0 0 4482 3297 47 155 8 2 78 12 0
0 0 0 268420 17904 1920584 0 0 788 36 4095 4759 11 3 85 1 0
0 0 0 269916 17940 1920868 0 0 108 560 6969 7280 11 2 86 1 1
3 0 0 267684 18196 1921304 0 0 256 0 5934 6094 9 2 90 0 0
0 0 0 257800 18196 1921528 0 0 0 0 5412 5508 10 1 89 0 1
1 0 0 257368 18196 1922028 0 0 0 0 5852 6046 9 1 89 0 1
0 0 0 256872 18200 1922236 0 0 0 0 5345 5566 9 1 90 0 0
0 0 0 256688 18208 1922292 0 0 0 1788 5388 5602 7 2 90 1 1
0 0 0 256520 18208 1922684 0 0 0 0 5387 5557 8 1 91 0 0
1 0 0 255788 18208 1923024 0 0 0 0 4992 5363 10 1 89 0 1
1 0 0 255392 18208 1923456 0 0 0 0 5027 5145 13 1 86 0 0
0 0 0 254980 18208 1923792 0 0 0 0 5042 5082 21 1 77 0 1
0 0 0 254452 18216 1924092 0 0 0 1848 5481 5695 7 1 91 1 1
0 0 0 254416 18216 1924268 0 0 0 0 4947 5250 7 1 92 0 0
1 0 0 253732 18216 1924616 0 0 0 0 5180 5383 8 2 90 0 1
0 0 0 253584 18216 1924912 0 0 12 0 4464 4623 8 1 91 0 0
0 0 0 243496 18216 1925224 0 0 0 0 5507 5700 9 1 90 0 1
0 0 0 243008 18224 1925504 0 0 0 1356 5070 5345 8 1 90 0 1
1 0 0 243220 18228 1925676 0 0 0 0 6241 6533 11 2 87 0 0