Resource management

Table of Contents Resource management processes load average IO

Resource management

processes

List processes running in background : jobs

View process tree of an user

pstree -u <USER>
(..)
init─┬─atd
     ├─console-kit-dae───63*[{console-kit-da}]
     ├─crond
(..)

load average

Show load average for 1, 5, 15 minutes.

uptime
11:00:02 up 104 days, 23:08,  7 users,  load average: 1.01, 1.05, 0.66

Get load average each minute: while sleep 60; do uptime; done;

IO

Handful:

• IO wait (wa) given by vmstat: time spent by CPU waiting for IO
• get all processes waiting for IO watch -n 1 "(ps aux | awk '\$8 ~ /D/ { print \$0 }')"
• get IO wait for last 5 secondes sar 5 | awk '/all|iowait/{print $7}'