I’ve already compiled a custom kernel that enables polling. I’m now following http://forums.freebsd.org/showthread.php?t=9187:
in loader.conf:
aio_load=”YES”
Luckily, I had already built samba with AIO support.
In smb.conf:
min receivefile size = 131072
aio read size = 1
aio write size = 1
use sendfile = yes
In rc.conf:
ifconfig_re0=”DHCP polling”
in sysctl.conf:
kern.ipc.maxsockbuf=16777216
kern.ipc.nmbclusters=32768
kern.ipc.somaxconn=32768
kern.maxfiles=65536
kern.maxfilesperproc=32768
kern.maxvnodes=800000
net.inet.tcp.delayed_ack=0
net.inet.tcp.inflight.enable=0
net.inet.tcp.path_mtu_discovery=0
net.inet.tcp.recvbuf_auto=1
net.inet.tcp.recvbuf_inc=524288
net.inet.tcp.recvbuf_max=16777216
net.inet.tcp.recvspace=65536
net.inet.tcp.rfc1323=1
net.inet.tcp.sendbuf_auto=1
net.inet.tcp.sendbuf_inc=524288
net.inet.tcp.sendspace=65536
net.inet.udp.maxdgram=57344
net.inet.udp.recvspace=65536
net.local.stream.recvspace=65536
net.inet.tcp.sendbuf_max=16777216
net.inet.tcp.mssdflt=1460
See also http://www.psc.edu/networking/projects/tcptune/.
Nuts. Still topping out at 11 MB/s. Wonder if it’s the disk, or if it’s the Windows 7 machine that I’m using to initiate the Samba transfer for testing.
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