[stunnel-users] samba over stunnel performance

Brian Szymanski ski at mediamatters.org
Sun Jul 24 14:36:56 CEST 2005


I'm trying to run samba over stunnel on a wireless connection. Here's the
unix box <- wifi -> windows laptop

Unfortunately, reading files from the shared drive is extremely slow.

If I look at the stunnel box on my windows machine, it is pumping out
about 20 messages/second that say:
LOG7[2140:3636]: SSL_read returned WANT_READ: retrying

On two >1GHz machines, this is utilizing about 5% of cpu, and 4% of the
11Mbps link. Clearly there is room for improvement here!

I tried poking around with stunnel.conf on the server to no avail -
specifically, I commented out the lines:
; Some performance tunings
socket = l:TCP_NODELAY=1
socket = r:TCP_NODELAY=1
;compression = rle

And restarted stunnel - same miserable performance (roughly the same
throughput, and resource usage).

Is there something about the SMB protocol that would cause stunnel to not
deal with it well? If so, is there a configuration option somewhere I can
tune, or do I have to RTFS & hack it to get decent performance here?

Any tips would be greatly appreciated. Thanks in advance!


Brian Szymanski
Software and Systems Developer
Media Matters for America
ski at mediamatters.org
aim:   xbrianskix

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