network performance

My CentOS / RHEL based server is configured with Intel PRO/1000 network interface cards. NAPI (Rx polling mode) is supported in the e1000 driver. I’ve multiple CPUs. How do I configure NAPI, decreasing interrupts and improve overall server network performance?

{ 1 comment }

We’ve gigabit networks, and large maximum transmission units (MTU) sizes (JumboFrames) can provide better network performance for our HPC environment. How do I change MTU size under Linux?

{ 13 comments }

Q. I’m experiencing decreased network performance due to ARP broadcasts coming from one system. What would cause a lot of ARP broadcasts from one server / computer?

{ 2 comments }

Can you tell me how does SNMP (Simple Network Management Protocol) work?

{ 7 comments }