Axboe is the current Linux kernel maintainer of the block layer and other block devices, along with contributing the
CFQ I/O scheduler,
Noop scheduler,
Deadline scheduler,
io_uring, and the
splice I/O architecture. Jens is also the author of the
blktrace utility and kernel parts, which provides a way to trace every block I/O activity in the Linux kernel. blktrace exists in 2.6.17 and later Linux kernels. To facilitate his block layer work in the Linux kernel, Axboe created the
flexible I/O tester (fio) benchmarking and workload simulation tool. He announced on a mailing list on Friday, January 24, 2014, that he was leaving Fusion-io after 3.5 years to join
Facebook. == References ==