If you think you may have contention for a filesystem, lv, or volume; you can use filemon to pinpoint the problem:
filemon -O capture_type -o output_file -T buffer_size
Filemon can capture information on several levels. Valid capture types are:
- “lf” – Logical file
- “vm” – Virtual Memory
- “lv” – Logical Volume
- “pv” – Physical Volume
The filemon process will run in the background. After a period of time, sometimes you only have to wait a few minutes, run the command “trcstop” to stop the filemon process. The report will be in the output file specified on the command line.
filemon -O lv -o /tmp/filemon.out -T 500000; sleep 300; trcstop