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Linux Kernel Patches To Use AMD INVLPGB Instruction Show Huge Speed-Up (www.phoronix.com)

submitted 2 months ago by Sunshine to c/[email protected]

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[–] [email protected] 33 points 2 months ago* (last edited 2 months ago) (2 children)

More surprising is that it's taken ~4 years for these Linux kernel patches to materialize with Zen 3 having first debuted in late 2020.

Reminder: Linux kernel funding is 2% of the Linux foundation's 200M$/year budget.

Anti Commercial-AI license

[–] [email protected] 34 points 2 months ago (1 children)

the Linux kernel hasn't widely made use of INVLPGB... In part because Intel engineers typically carry out much of the new x86 instruction optimizations within the Linux kernel and Intel processors do not currently support INVLPGB.

Sounds like AMD needs to fund more kernel development.

[–] [email protected] 2 points 2 months ago* (last edited 2 months ago)

especially considering how they went into the server market again; like what, are they expecting people to shove a 256 thread processor into a windows server?

[–] [email protected] 10 points 2 months ago (3 children)

whats the rest then?

[–] [email protected] 39 points 2 months ago

$196,000,000

[–] [email protected] 8 points 2 months ago

https://news.ycombinator.com/item?id=38797213

https://www.linuxfoundation.org/hubfs/Reports/2023_lf_annual_report_122123a.pdf?hsLang=en

- Cloud, Containers, & Virtualization 25%

- Networking & Edge 13%

- AI, ML, Data & Analytics 12%

- Web & Application Development 11%

- Cross-Technology 8%

- Privacy & Security 4%

- IoT & Embedded 4%

- Blockchain 4%

- DevOps, CI/CD, & Site Reliability 3%

- Open Source & Compliance Best Practices 3%

- System Administration 2%

- Linux Kernel 2%

- System Engineering 2%

- Storage 2%

- Open Hardware 1%

- Safety-Critical Systems 1%

- Visual Effects 1%

[–] [email protected] 5 points 2 months ago

Without doing research, but the Linux Foundation is also the parent of the CNCF, the foundation that funds Kubernetes and many adjacent projects. I can imagine that they get a lot more money as there are probably more developers handling CNCF projects than the Linux Kernel.