Post Syndicated from original https://lwn.net/Articles/913291/

The search for better performance from the kernel never ends. Recently
there has been a stream of smaller patches that promise incremental
performance gains, at least for some types of applications. Read on for an
overview of two of those patches, which make changes to the epoll system
calls and to NUMA balancing. This work shows where developers are looking
for performance improvements — and that not everybody measures performance
the same way.