Performance Tuning

Know what you are testing

Linux has several automatic features that may cause
unanticipated side effects
●
Message delivery - Linux does its best to get message from A to B
●
Packet may get from A to B via different path than you think
●
Check arp_filter settings - sysctl -a | grep arp_filter
●
Automatic buffer sizing
●
Be explicit if it matters to you