I've recently been getting along with a NAS project and been trying to solve utterly abysmal Samba transfer speeds. The NAS is running FreeBSD 10.2 and Samba 3.6. The Mac is a 2015 Macbook Pro Retina that can easily do at least 9MB/s when I am downloading stuff over WLAN from the internet, but communicating with the NAS that is local is abysmally slow, maybe 3-5MB/s. I've already tried the following on the Mac side of things:
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net.inet.tcp.delayed_ack=0
net.inet.tcp.mssdflt=1440
net.inet.tcp.sendspace=250000
net.inet.tcp.recvspace=250000
net.inet.tcp.mssdflt=1440
net.inet.tcp.sendspace=250000
net.inet.tcp.recvspace=250000
![CURB CURB](https://m.media-amazon.com/images/I/71Ddn8ys7JL._AC_SS450_.jpg)
This did improve things, but still not to a level I would find acceptable.
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smbutil statshares -m /Volumes/CIFS/
shows SMB_VERSION to be SMB_1, which I would venture a guess has quite a lot to do with the horrible speed I am experiencing, how do I force the Mac to connect using SMB_3?
I tried doing the following on the NAS side of Samba:
min protocol = SMB2
max protocol = SMB3
max protocol = SMB3