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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Cisco 7200 VXR with NPE-400 (was RE: The market must be comingback)
> And please, lab tests doesnt show it all. Does the Foundry have a route > cache? How many entries? I've been trying to use Linux for routing. I've had ~30Mbps going through 2 3Com cards without a hiccup. The "problem" I'm having is figuring out when I'll hit the limit of throughput. Interrupt time doesn't show in top or uptime, so it looks like the CPU is 99% idle (this is with a Duron 750). I've also looked at the kernel routing code and found that there is room for significant improvement by changing the route-cache code. I figure increasing the route-cache hash table size from 256 entries and changing from one entry per IP to one entry per route prefix would give about an order of magnitude of improvement based on typical route-cache sizes of 5000 entries that I see. However without knowing the true CPU utilization I don't know if it is even necessary to try. -Ralph
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