[c-nsp] NPE-G1 PPS limitations

[dpinkard at AccessLine.com]

I'm stuck with older hardware (VXRs, and GSRs) and trying to plan for its
eventual demise... 

At what point should one expect the G1 to actually top out on PPS? I've
heard anecdotal claims of 200-225Mbps with voip-sized (200byte) packets for
something around 125kpps, which is dramatically lower than Cisco's
optimistically marketed number of 1Mpps. 

So assuming a 20 line ACL, how should one expect it to scale for traffic
going to/from ports on the gigE interfaces? Should this performance drop
when traffic is headed to the PCI buses?

That being said.. how would a GSR scale in the same scenario? We're
currently sending 150kpps onto an engine2 gigE board but anyone who's used
the GSR quickly learns that engine2 cards weren't designed to do much for
gigE other than to get to a BGP peer... Any experiential/anecdotal
information to share?

Thanks!