[Samba] Samba - Performance Issues

Jay Ts jay at jayts.cx
Wed Oct 2 18:51:01 GMT 2002

On Wed, Oct 02, 2002 at 12:57:17PM -0500, Vinay Kudithipudi wrote:
> ===SMB.CONF===
> [global]
> 	workgroup = MYGROUP
> 	netbios name = {HOSTNAME}
> 	wins server = {WINSSERVER}
> 	server string = {HOSTNAME}
> 	security = SHARE
> 	encrypt passwords = Yes
> 	log file = /var/log/samba/log.%m
> 	max log size = 50
> 	socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

IIRC, someone wrote in recently saying that the sizes of SO_RCVBUF
and SO_SNDBUF can have huge effects on performance, and setting
them to 8192 (which used to be a good idea) can reduce performance.
I suggest removing them from the socket options and measuring the
performance at the defaults, then try modifying them and comparing

Also, TCP_NODELAY is the default, right?  So maybe just comment
out the socket options parameter, restart the daemons, and check
to see if the problem goes away.

> I was wondering if there is any documentation for fine tuning SAMBA. Any
> help is appreciated. Thanks.

Nowadays, it's usually best to "leave things alone" (i.e., at the defaults).
It's important to not change things in a way that reduces performance.

Jay Ts

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