Monitor overall system
top
| -p | Show particular PID | |
| -d | refresh secs | |
| 1 | show individual CPU information | |
| sorting | P | Sort by CPU usage |
| M | sort by memory usage | |
| N | sort by PID |
vmstat
vmstat report memory and CPU information. In the below example, it means collect information every 2 secs for 3 times.
vmstat 2 3
sar
sar also can report the CPU, memory and disk IO information base on the parameter.
sar 2 3
This example means collect the information every 2 secs for 3 times.
sar –r 2 3
-r provide more detail of the memory
sar –b 2 3
-b provide the disk IO information.
Monitor CPU
uptime: This provide the idea for general host level loading. Large number means higher load.
Monitor Disk
collect information every 2 secs for 2 times.
iostat 2 2
Monitor memory
mpstat
mpstat 2 3
collect information every 2 secs for 3 times.
free
General memory utilization on the host.
/proc/meminfo
Snapshot for the host memory usage.
cat /proc/meminfo
ipcs
show shared memory in the Oracle SGA.
0 comments:
Post a Comment