Apache 2.4 released focused on performance

Apache 2.4 has been released and it has lots of improvements to the performance area. Here is a small list

• Loadable MPMs – Multiple MPMs can now be built as loadable modules at compile time. The MPM of choice can be configured at run time.
• Event MPM – The Event MPM is no longer experimental but is now fully supported.
• Asynchronous support – Better support for asynchronous read/write for supporting MPMs and platforms.
• Reduced memory usage – Despite many new features, 2.4.x tends to use less memory than 2.2.x.

Read more here: Apache Documentation