autofdo

AutoFDO

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3Distinct people

3Mentions

0Explicit recommenders

623GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

AutoFDO

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year3 dated mentions

Observed mentions: 2019-11-11 08:39:27 UTC to 2023-07-06 22:19:37 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	1	1
2020	2020-01-01 00:00:00 UTC	2021-01-01 00:00:00 UTC	1	1
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	0	0
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	0	0
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	1	1

What Hacker News says

3 sources

tylerhou·Jul 6, 2023

Yes, Clang supports FDO, but it might be hard to set up (I've never set up FDO myself). You could check out https://github.com/google/autofdo and https://clang.llvm.org/docs/UsersManual.html#profile-guided-.... (People within Google say "FDO", basically everyone else says "PGO".)

In {n} times faster than C

The_rationalist·Nov 11, 2020

Autofdo if automatically called by the rust toolchain should alleviate the first point https://github.com/google/autofdo (though it only work on Linux) How much percent slower is the build time with PGO on average?

In Exploring PGO for the Rust Compiler

woadwarrior01·Nov 11, 2019

Also worth mentioning here is perf[1], which is great for low overhead profiling. Also, perf profiles can be turned into profiles compatible with GCC and LLVM PGO to build optimized binaries based on production runs, using autofdo[2]. In my use case, the instrumentation overhead was too high to use regular profiling on production workloads. [1]: https://en.m.wikipedia.org/wiki/Perf_%28Linux%29 [2]: https://github.com/google/autofdo

In Evaluation of CPU profiling tools: gperftools, Valgrind and gprof (2015)