Samba performance, TCP Stack Issue?

[Jan Zacharias]

Hi,

was anybody able to tune the Samba service (2.2.12 or 3.0.23b) so that it  
would perform out as well as
unter linux where it maxes out at about 11 Mb/s using some Intel/3com card?

So far, the most I got out of it was ~6 Mb/s while txing one file to a  
win2k station, curiously I get
~8.5 Mb/s when txing multiple files in parallel.

So far i messed with:

  - ifconfig mtu
  - net.inet.tcp settings
  - smb's socket options

Tuning SO_SNDBUF gave only very little gain, adapting the mtu to match the  
win2k box was useless.
W/a net.inet.tcp.inflight.enable enabled the txrate is 2 Mb/s lower,  
however 6 Mb/s is still SLOW.

I cant find the bottleneck, as the system is quite idle.

Any Suggestions?

Greetz,

Jan


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