Re: [dpdk-dev] Performance impact of "declaring" more CPU cores

2019-10-30 Thread Tom Barbette
bette; dev@dpdk.org Objet : Re: [dpdk-dev] Performance impact of "declaring" more CPU cores > The only useful observation we made is that when we are in a "bad case", > the LLC has more cache misses. Have you looked closely at the CPU topology on your platform, can you pro

Re: [dpdk-dev] Performance impact of "declaring" more CPU cores

2019-10-25 Thread David Christensen
The only useful observation we made is that when we are in a "bad case", the LLC has more cache misses. Have you looked closely at the CPU topology on your platform, can you provide some examples here of what you're seeing? The hwloc package is very useful in visualizing how your logical core