smb4.conf optimisation?

[ObiTobi]

Hi,

my smb4.conf is very old ( up to 8 years old). All works for me, that is not the case. But if I run testparm I receive some hints.

Code:

lpcfg_do_global_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
lpcfg_do_service_parameter: WARNING: The "blocking locks" option is deprecated
Loaded services file OK.
Weak crypto is allowed

WARNING: socket options = TCP_NODELAY SO_RCVBUF=1048576 SO_SNDBUF=1048576 IPTOS_LOWDELAY IPTOS_THROUGHPUT
This warning is printed because you set one of the
following options: SO_SNDBUF, SO_RCVBUF, SO_SNDLOWAT,
SO_RCVLOWAT
Modern server operating systems are tuned for
high network performance in the majority of situations;
when you set 'socket options' you are overriding those
settings.
Linux in particular has an auto-tuning mechanism for
buffer sizes (SO_SNDBUF, SO_RCVBUF) that will be
disabled if you specify a socket buffer size. This can
potentially cripple your TCP/IP stack.

Getting the 'socket options' correct can make a big
difference to your performance, but getting them wrong
can degrade it by just as much. As with any other low
level setting, if you must make changes to it, make
 small changes and test the effect before making any
large changes.

Which of these things should I change? "blocking locks" - is deprecated. But is there a replacement for this or can Samba now completely cover everything without this parameter? I mean at that time I had problems with some programs (databases, backup....).

What about the line with "socket options"? Remove "SO_SNDBUF, SO_RCVBUF"? But we are not on linux.