What do each of these "net*" parameters represent? TIA.
We use the following option and decreased our backup time by 30 %:
net.core.rmem_max=8388608
net.core.wmem_max=8388608
net.core.wmem_default=8388608
net.core.rmem_default=8388608
net.core.netdev_max_backlog=4096
net.ipv4.tcp_rmem = "4096 87380 4194304"
net.ipv4.tcp_wmem = "4096 87380 4194304"
net.ipv4.tcp_mem = "4096 87380 4194304"
Download the Linux kernel source and look in:
./Documentation/networking/ip-sysctl.txt
They're basically increasing the networking stack buffer sizes and
backlog in order to improve performance an a high-bandwidth, low-latency
network.
Roy
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