Alibaba Kernel is originated by Alibaba, the largest e-commerce website in Asia. It is based on RHEL6 source codes and included some updates and new features need by Alibaba. For more information and documentation, please refer to http://kernel.taobao.org

• All features of RHEL6U2 kernel, source code version is 2.6.32-220.23.1.
• netoops to enable you collect data from the panic server, https://lwn.net/Articles/414031/.
• bigalloc and inline data support for ext4. https://lwn.net/Articles/469805/
• overlayfs which can deploy one fs over another. Please refer to http://lwn.net/Articles/447650/.
• flashcache embedded support.
• cpu accounting support for containers.
• dio overwrite nolock support for fast SSDs.
• Perf jit to enable you use perf to trace a java program.
• Enable different memory management policy.
• ...