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system or iowait columns it could be an indication of other internal processes or swapping memory to
and from disk that may need to be investigated further.
TOP
The “top” command-line utility produces a frequently-updated list of processes on most UNIX-based
platforms. By default, the processes are ordered by percentage of CPU usage, with only the highest
CPU consumers shown. The top command shows how much processing power and memory are being
used. Running the “top” command will give you information on the system memory and swap space
usage. The output on the screen is broken down into two sections, the top section tells you the current
system time, up time, number of users and average load.
top - 08:57:58 up 97 days, 23:53, 3 users, load average: 0.06, 0.03,
0.00
Tasks: 79 total, 1 running, 78 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 100.0% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 2049976k total, 2034984k used, 14992k free, 1848k buffers
Swap: 2048248k total, 1021960k used, 1026288k free, 14252k cached
It also shows you the total amount of memory available on the system, amount used and free. The
same information is shown for the swap space allocated on the system, swap used, swap free and
swap cached.
The bottom section of the output shows the top 20 processes listed by PID and user name, priority
and other information. For many Oracle Transportation Management instances Java will likely show up
as being the highest consumer of memory and CPU on the system.
Note: If you see other processes that are using significant system resources you should
ask the administrator to follow up.
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