Among the major changes in the Linux 2.6.20 kernel are official Sony Playstation 3 support, KVM virtualization support, libata improvements, relocatable kernel, asynchronous SCSI scanning, and multi-threaded USB probing. The Sony Playstation 3 support in the 2.6.20 kernel is coming because of Sony engineers contributing the patches, which add machine-specific support for various items.
Phoronix takes a look at the upcoming 2.6.20 kernel which should be out shortly, and compares it’s performance with that of the current 2.6.19 version. There are no monumental differences, but the 2.6.20 kernel comes out on top in the end.
Source: Phoronix