[j-nsp] Thoughts on MX80 v MX104 RE performance

[Mike Williams]

I'm only seeing 64-bit Junos available for MX240 and up
And they already have hugely powerful x86 REs as options.


On Thursday 23 April 2015 12:54:34 Eduardo Schoedler wrote:
> There is a 64-bit version of junos, someone already tested?
> 
> Regards,
> 
> 2015-04-23 12:49 GMT-03:00 Raphael Mazelier <raph at futomaki.net>:
> > Le 23/04/15 15:13, Saku Ytti a écrit :
> >> Yeah at least 10k has XEON. I don't really understand why vendors use
> >> PPC, is
> >> it mainly motivated by BOM or pincount/thermal or some other issues?
> > 
> > Yes on cheap boxes, ppc processor still have a good power/price ratio.
> > The real problem is the performance of junos on ppc.
> > It can be acceptable on cheap switch (like the EX series), but not on MX.
> > 
> >  But yeah, JunOS relies on terrific single thread performance, but unsure
> >  
> >> how
> >> long they can get away with it.
> > 
> > Juniper is aware of this problem, and work on this. Junos 15 should have
> > limited smp capabilities (afaik rpd will still not be multi-thread).
> > 
> >  For some reason, IOS with equivalent CPU is much faster to converge.
> > 
> > Cisco have made the effort to rewrite their os (and not only once, ios15,
> > ios-xr, nxos, etc...). Juniper should make the same, and rewrite junos
> > from
> > scratch in my opinion, and I think the monolithic design of rpd should be
> > rethinked.
> > 
> > 
> > Regards,
> > 
> > --
> > Raphael Mazelier
> > 
> > 
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-- 
Mike Williams