Best Networking Tweaks for Linux

“A Linux system can be tweaked to a degree Windows users may
envy (or fear) especially for networking. Tweaking a Linux box for
networking is a bit more mundane than other platforms: there are
specific driver settings one can work with but its best flexibility
comes from a mix of OS-level modifications and adherence to
different RFCs.

“ifconfig (interface) txqueuelen #

“Speedy LinuxSoftware buffers for network adapters on Linux
start off at a conservative 1000 packets. Network researchers and
scientists have mucked around with this, and figured out that we
should be using 10,000 for anything decent on a LAN; more if you’re
running GB or 10GE stuff. Slow interfaces, such as modems and WAN
links, can default to 0-100, but don’t be afraid to bump it up
towards 1000 and see if your performance improves. Bumping up this
setting does use memory, so be careful if you’re using an embedded
router or something (I’ve used 10,000 on 16MB RAM OpenWRT units, no
prob).”

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