For several months we encounter problems delays :
we have a server ( os: ubuntu server 12.04 ) with samba and ldap service . Our clients are on Mac, Windows and Linux client ubuntu . Huwaei NAS volumes are on NFS server
Some users copy large files ( from 1 GB to 10 GB) of their position on NFS volumes. When copying the flow is very slow and windows explorer will crash. MAC subfolders will take some time to appear and we also find delays . For a copy of files 1 or 4 GB can take an hour . In contrast files less than 1 G0 is fast enough.
I think samba over NFS application optimization , know if there is a way to optimize the speed by putting a particular command line in smb.conf ?
But if we go on CIFS ( on Windows workstations) flows are very fast ( 70 MB / s to 95 MB / s constant !)
So we can consider that CIFS is optimized for Windows. NFS client on MAC and Linux is not very optimized default