Hello,
We use a linux box for routing and traffic shaping (we have a few thousand ip
addresses routed through this box) and the soft interrupt load is very high.
We use linux kernel 2.6.32.7 on an Intel(R) Core(TM)2 Quad CPU Q6600 @
2.40GHz.
Cpu1 serves an internal network interface, and Cpu3 serves a single physical
network interface (with 2 vlans):
Cpu0 : 0.4%us, 0.0%sy, 0.0%ni, 98.2%id, 0.0%wa, 0.0%hi, 1.4%si, 0.0%st
Cpu1 : 0.7%us, 0.0%sy, 0.0%ni, 16.1%id, 0.0%wa, 0.3%hi, 82.9%si, 0.0%st
Cpu2 : 0.0%us, 0.0%sy, 0.0%ni, 96.1%id, 0.0%wa, 0.0%hi, 3.9%si, 0.0%st
Cpu3 : 0.0%us, 0.0%sy, 0.0%ni, 18.2%id, 0.0%wa, 0.7%hi, 81.2%si, 0.0%st
Mem: 2051812k total, 816388k used, 1235424k free, 134232k buffers
Swap: 6016300k total, 0k used, 6016300k free, 110356k cached
Cpu0 and Cpu2 are idle most of the time.
Is there any way to use multiple processors to handle software interrupts for
the same network interface, so that the load be distributed across multiple
processors ?
Any other suggestions to ease the load are welcome.
Thank You !
Bogdan-Florin Florea
