[c-nsp] cpu usage of a 7200 npe-g2: disapointed

[Rodney Dunn]

On Mon, Sep 03, 2007 at 06:13:28PM +0200, Philippe Strauss wrote:
> On Mon, Sep 03, 2007 at 01:15:45PM +0200, Christophe Fillot wrote:
> > Philippe Strauss a ?crit :
> > 
> > Hello,
> >
> > >We replaced a 7200 NPE400 with a NPE-G2 recently and are disapointed
> > >by the CPU usage: this router switches ~80kPPS in+out (~180Mbps), it
> > >was peaking at 55% CPU, now 40%, while the CPU clock is more that
> > >4 time higher on the G2.
> > >
> > >currently running: c7200p-p-mz.122-31.SB7.bin
> > >was running 12.2.16-is
> > >
> > >any comment on this?
> > >
> >
> > Rodney explained this in a previous thread:
> > 
> > https://puck.nether.net/pipermail/cisco-nsp/2007-April/039999.html
> > https://puck.nether.net/pipermail/cisco-nsp/2007-April/040171.html
> > 
> > Chris
> 
> Thanks for the remainder. Actuall I was aware of it, but the discussion
> is about comparing G1 and G2.
> I was thinking a NPE400, which is ~half the speed of a G1 would give
> others numbers figures.
> 
> On this box, the busiest interface is a HSRP master with others boxes
> using it as a (statically routed) default. On the same LAN, another
> border (HSRP standby) get traffic from the G2 (master).
> It means quiet a chunk of traffic gets in and immediately out
> of the same interface.
> In the elder days, before CEF, I should have configured "ip route-cache
> same interface" on this one. Is it still necessary nowadays?

No.

Rodney

> 
> regards.
> 
> -- 
> Philippe Strauss
> av. de Beaulieu 25
> 1004 Lausanne
> http://philou.ch
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