IO_uring creator and Linux block subsystem maintainer Jens Axboe spent about five minutes working on two patches to implement caching for issue-side time querying in the block layer and can yield 6% or more better I/O performance. Axboe shared about his latest interesting Linux I/O performance optimization, "Something I've had in the back of my mind for years, and finally did it today. Which is kind of sad, since it was literally a 5 min job, yielding a more than 6% improvement. Would likely be ...