After 8 concurrent connections to the NFS store, my performance is degraded.
- On-Premise Server + WebMail Installations: Version 6.0 > Current Version.
By default, the NFS daemon will only spawn up to 8 processes.
This can be improved by increasing the RPCNFSDCOUNT value.
- Open a file called nfs in /etc/sysconfig in your editor
- In the above file, edit the following line to either 32; 64; or 128; depending on the load you experience on your system
- Save the changes and restart NFS
This can be tested using the following command:
dd if=/dev/zero of=/usr/local/atmail/users/testfile bs=16k count=1000
If the value returned for transfer speed is less than 1MB/s you should check that your switch and ethernet card, and the disks on the NFS server are optimized.