Linux Network Tuning for 2013
Linux distributions still ship with the assumption that they will be multi-user systems, meaning resource limits are set for a normal human doing day-to-day desktop work. For a high-performance system trying to serve thousands of concurrent network clients, these limits are far too low. If you have an online game or web app that’s pushing the envelope, these settings can help increase awesomeness.
netmap - the fast packet I/O framework
netmap is a framework for high speed packet I/O. Together with its companion VALE software switch, it is implemented as a single kernel module and available for FreeBSD, Linux and now also Windows (OSX still missing, unfortunately). netmap supports access to network cards (NICs), host stack, virtual ports (the "VALE" switch), and "netmap pipes". It can easily reach line rate on 10G NICs (14.88 Mpp
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