PRIMECLUSTER Global File Services Configuration and Administration Guide 4.1 (Solaris(TM) 10 Operating System)

1.8.8 Effect of file lock on system performance

If many file locks are set on a GFS Shared File System, the system performance can be affected as follows:

• Loads on the memory will be increased by increase in amount of memory used by MDS.
• Loads on CPU will be intensive by the file lock processing.
• If there are many processes that wait for the file lock, and the following operations are executed, loads in the network might be temporarily increased.
  1. The file lock is released, or
  2. The node where the file lock setup process exists goes down.
• If the recovery procedure is executed when many file locks are set, it will take time and fail.