> Maybe. That's where my comment about CPU cache starvation comes into
> play. I haven't delved into the Juniper line cards recently so I could
> easily be wrong, but if the number of routes being actively used
> pushes past the CPU data cache, the cache miss rate will go way up and
> it'll start thrashing main memory. The net result is that the
> achievable PPS drops by at least an order of magnitude.
When you say, you've not delved into the Juniper line cards recently,
to which specific Juniper linecard your comment applies to?
On Fri, 29 Sept 2023 at 08:24, William Herrin <bill@herrin.us> wrote:
> Maybe. That's where my comment about CPU cache starvation comes into
> play. I haven't delved into the Juniper line cards recently so I could
> easily be wrong, but if the number of routes being actively used
> pushes past the CPU data cache, the cache miss rate will go way up and
> it'll start thrashing main memory. The net result is that the
> achievable PPS drops by at least an order of magnitude.
When you say, you've not delved into the Juniper line cards recently,
to which specific Juniper linecard your comment applies to?
--
++ytti