Performance Optimizations, Other "Big" Work For Linux 5.16 To The Block Code

Written by Michael Larabel in Linux Storage on 31 October 2021 at 05:44 AM EDT. 4 Comments
Linux block subsystem maintainer and IO_uring lead developer Jens Axboe has prepared his various pull requests ahead of the upcoming Linux 5.16 merge window.

Axboe calls it "a big one" for the changes he oversees going into Linux 5.16.

Notably it includes many of his recent performance optimizations around IO_uring and related block code.

Over the past month Axboe took the Linux I/O performance from seeing around ~5M IOPS per-core at the end of September to now around 10M IOPS per-core. Many of those optimizations will be part of the upcoming Linux 5.16 kernel.

He continues to work on his Linux I/O optimizations via the perf-wip branch. As you can see, many of the commits have been queued up for inclusion in Linux 5.16 but there still are some more recent optimizations that aren't part of these initial pull requests.

In any case, there is a lot happening in the Linux block subsystem right now and Linux 5.16 will be another nice step forward especially around performance along with IO_uring enhancements and more.
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