I'm trying it in Ubuntu server 11.10 beta kernel 3.0.0-10.
Windows 7 --> Ubuntu server via mount cifs =< 20 % link utilization in windows 7 task manager
Ubuntu server <-- Windows 7 via samba in explorer => 30 % link utilization in windows 7 task manager
General further slowness can be deduced to btrFS now in my case. Although general disk troughput is very high +100MB/s. Cifs in combination with btrFS is a big performance hit on Atom CPU. Performance in cifs is now way better than over sftp.
I'm trying it in Ubuntu server 11.10 beta kernel 3.0.0-10.
Windows 7 --> Ubuntu server via mount cifs =< 20 % link utilization in windows 7 task manager
Ubuntu server <-- Windows 7 via samba in explorer => 30 % link utilization in windows 7 task manager
General further slowness can be deduced to btrFS now in my case. Although general disk troughput is very high +100MB/s. Cifs in combination with btrFS is a big performance hit on Atom CPU. Performance in cifs is now way better than over sftp.