In the last HowTo, I showed you how to setup GFS2 file system with Red Hat Clustering. I will now show you how to optimize the performance of your GFS2 mounts. The gfs_controld daemon manages the mounting, unmounting, and the recovery of the GFS2 mounts. gfs_controld also manages the posix lock. By default the plock_rate_limit option is set to 100. This will allow a maximum of 100 locks per second, which will decrease your GFS2 performance.