jessie: samba/cifs ls rsync unusably slow (lstat)

[christian weikusat <christian@shamanbenefit.net>]

Dear all,

after upgrading to jessie I have a serious problem with a cifs mounted 
Windows share:
Directory listing is extremely slow. ls of a large directory can take 
several minutes, rsync comparison of directories (lstat call for every 
file) needs 30+ minutes (with wheezy: 23 seconds).
I tried downgrading samba and/or rsync to the wheezy versions but it did 
not help. Up- and downloads are still as fast as before, it's the same 
hardware as before.
Any ideas what else I could try?

Best regards,
Christian