Re: Mikrotik Cloud Core Router and BGP real life experiences?

[Eduardo Schoedler <listas () esds com br>]

How about SMP Affinity in CCR?
System > Resources > IRQ.


2013/12/27 Andre Tomt <andre-nanog () tomt net>

> On 27. des. 2013 17:26, Jim Shankland wrote:
> <snip>
>
>  Routing table size was completely not an issue in our environment; we
> > were looking at a number of concurrent flows in the high-5 to
> > low-6-digit range, and since Linux uses a route cache, it was that
> > number, rather than the number of full tables we carried, that was
> > important.
> <snip>
>
> FYI, Linux no longer has a routing cache, so any performance numbers with
> the cache in place is void on modern kernels. It was deemed too fragile,
> handled mixed traffic badly, and was way easy to DoS. It wasnt simply just
> ripped out of course, the full lookups was made way faster and a bunch of
> scalability issues got plugged in the process.
>
> All in all, in PPS, Linux should now handle mixed traffic much better, but
> less diverse traffic patterns might be a little slower than before.
> However, all in all, much more consistent and predictable.
>
> Not everything is peachy though, there are still some cases that sucked
> last I checked. Running tons of tunnels beeing one. Multicast rx was
> severely gimped for a while after the removal, but that got fixed.


-- 
Eduardo Schoedler