Comments (3)
Hi! We see major improvements from both PGO and BOLT. We've published a couple of papers about BOLT that have some of the comparisons you're interested in:
- https://research.facebook.com/publications/bolt-a-practical-binary-optimizer-for-data-centers-and-beyond/
- https://research.facebook.com/publications/lightning-bolt-powerful-fast-and-scalable-binary-optimization/
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Thanks for the links! So now I am wondering - did you think about integrating PGO/BOLT into the HHVM build scripts (which are open-source, not Facebook internal build scripts)? Also, would be great to see somewhere in the README or other documentation how HHVM could be optimized with PGO/BOLT and what benefits from the performance perspective could be achieved with that.
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The HHVM team is not going to be able to maintain an external (Cmake) build. I am doubtful they'll change the build to include PGO/Bolt in the external build.
https://hhvm.com/blog/2023/10/27/oss-update.html
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