On Mon, 28 Feb 2000, Nick Bastin wrote:
> Exactly. The 7206VXR will still outperform a high end linux system,
> because there are other demands on the bandwidth of the PCI bus in your
> linux system. Also, it's worth noting that while Cisco classifies the 7200
> series in their 'High-End Routers', it's a cheap box intended for
> enterprise work. The newer 7576 can push 4Gbps sustained across the
> chassis, and even the older 7507/7513 can do 2Gbps. I'm not suggesting
> that we'll ever get linux to touch the capabilities of a 12000 (or a
> Juniper M20/M40), but PC hardware issues aside, the kernel ought to be able
> to push packets as well as any Cisco 7xxx series router.
This is not what I said. What was said is the 7206VXR with
the 300Mhz NMP has *exactly* the same limit as a high end PC...
They both bottleneck on the PCI bus somewhere *after* the
600Mbit/sec mark.
The difference is the Linux box will do this in the slow path,
and keep doing it while filtering the traffic, the 7206 dies of NMP
overload.
What other demands? A Linux based router is running a bunch
of cards, not disks/etc.
---
As folks might have suspected, not much survives except roaches,
and they don't carry large enough packets fast enough...
--About the Internet and nuclear war.
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