Re: Dual CPU performance in routing

Linux Advanced Routing and Traffic Control

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GolemMTM wrote:
Hello

I have question, currently using linux box as router. It only route packets.
Currently there is 80k packets/sec and this cause 90% CPU usage on
Intel Celeron 3ghz CPU.
Did multiprocessor system like 2x XEON DP 3.4ghz will divide CPU
usage between 2 CPU and will allow double routing performance ?


It will improve performance if irqs are balanced, but not double. Also, 90% seems like a lot. If you use firewalling (many linear rules) and qos (many linear u32 filter rules), they will cost a lot of performance, you will se that with top, on soft interrupts (si). I suggest you to use intel gigabit cards on pci64.
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