Hi!
Yes. I think you should be able to use about 70% of the bandwidth (I can get
about 32Mb/s out of 45Mb/s (T3) with 100ms latency). You might need to
increase your TCP window size and/or change the I/O scheduler you're using
for NBD. Switch to "deadline" scheduler if you're not using that one already.
And set the TCP window size, as follows:
Thanks for the tips - never changed something there before:) I set the
scheduler to deadline ...
In order to raise the window size to about 1 MB, the following sysctl
settings should be changed:
net.core.rmem_max = 500000
net.core.wmem_max = 500000
... increase TCP max buffer size (given in Byte?)
net.ipv4.tcp_rmem = 4096 87380 1333000
net.ipv4.tcp_wmem = 4096 16384 1333000
What does all these values mean exactly?