Linux Performance Tuning

From Notes

There are 5 primary areas to focus on when tuning a system for performance. These areas are:

• Display
• Network
• CPU
• Disk
• Memory

Most server engineers will concentrate on CPU, memory, disk, and network performance. Rarely one will find an application that depends on display performance related to graphical rendering of some sort.

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Memory

Use pmap to see how much memory a process is using:

pmap -d <pid>

To get a list of all shared memory in use, use the ipcs command:

ipcs -a

...or...

cat /proc/sysvipc/shm

You can also remove the shared segment with ipcrm.