[Samba] Question about performance with sync always unchecked

[samba]

Hi,

I've very strange problem from my cumtomer, his step is:

1. create a samba share, with sync always=no and strict sync=no
2. coping some big files
3. reboot, repeat step 2, he saw the performance is very bad
4. set sync always and strict sync to yes, repeat step 2, the performance
   is more better than step 3

I think this is maybe because of network traffic, but my customer dosn't
think so.

Dos anybody meet this problem? Thanks for your response.

--
Regards.
Alex Xiang