CIFS performance tuning

A network drive is mounted on a REDHAT 6 client using mount.cifs and autofs. To improve the file transfer performance, after searching the web, I included the CIFSMaxBufSize=130048 option for the cifs.ko kernel module. This increased the file transfer speed from ~35 Mb/s to ~ 80 Mb/s.
I found very little documentation related to CIFS performance tuning on the customer portal - are there any best practices related to this that the community would be able to share?
Thanks,
Balazs