~5 Minutes Of Coding Yields A 6%+ Boost To Linux I/O Performance

[phoronix]

Phoronix: ~5 Minutes Of Coding Yields A 6%+ Boost To Linux I/O Performance

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...

https://www.phoronix.com/news/Linux-Caching-Time-Block-IO

[kpedersen]

And less than a 1 minute job of disabling io_uring can bring a 60% boost to Linux security.

I joke, I joke. Not everything on a computer needs to be secure (i.e offline HPC workloads).

[twokilohertz]

It probably took so long as everyone knows that one of the two hardest things in programming is cache invalidation.

[sobrus]

Jens Axboe - this explains everything

I guess his 5 minutes of work in I/O subsystem is more like 5 years for ordinary software developer.

[Anux]

5 minutes alone
\m/

[tsuru]

Highlighting that he essentially said he had years of hammock time before coding. I wonder if the solution looks the same as originally pondered or if the code in other areas had to improve before the 5 minute addition was possible.

[Danny3]

At this point I wish more software would take advantage of IO_uring!
I don't even know any that already does.

[debrouxl]

At this point I wish more software would take advantage of IO_uring!
I don't even know any that already does.

At the time of this writing, on my Debian sid amd64:

# apt-cache search io_uring
liburing-dev - Linux kernel io_uring access library - development files
liburing2 - Linux kernel io_uring access library - shared library
librust-blocking-dev - thread pool for isolating blocking I/O - Rust source code
librust-io-uring-dev - Low-level `io_uring` userspace interface for Rust - Rust source code

# apt-cache rdepends liburing2
liburing2
Reverse Depends:
libmariadbd19
samba-vfs-modules
qemu-utils
qemu-system-x86
qemu-system-sparc
qemu-system-ppc
qemu-system-misc
qemu-system-mips
qemu-system-common
qemu-system-arm
qemu-guest-agent
plocate
mpd
mariadb-test
mariadb-server-core
mariadb-backup
liburing-dev

Good to see that the (probably conditional, anyway) usage of io_uring hasn't spread to many packages yet.

[Vorpal]

At this point I wish more software would take advantage of IO_uring!
I don't even know any that already does.

PLocate (a implementation of the venerable locate tool) does for disk IO, not sure if it is only for indexing or for searching too.

[Anux]

mpd

Interesting, this little beast always is on the edge of maximum performance.