Comments (3)
The beliefe here is that PGO on top of AutoFDO would beat PGO alone.
Also AutoFDO on top of AutoFDO is an iterate action, that can be done repeatedly, we have had experiments showing that by doing this, performance goes up and down, it's not always a win.
from autofdo.
No. I mean not applying PGO after AutoFDO. I mean applying PGO on AutoFDO tools (create_gcov
, profile_merger
, etc).
from autofdo.
I see. That makes sense, if the time running AutoFDO tools is not a negligible portion of the whole build time. For large projects, the compile / link time is predominant.
from autofdo.
Related Issues (20)
- autofdo doesnt compile. HOT 6
- dwarf2reader.cc:835: Unhandled form type HOT 2
- Huge memory consumption
- couldn't ninja HOT 2
- Disscussion: Does autofdo support .zdebug_{info,line}...
- llvm-16-compile-fix
- [bug] No checking about "requires the first loadable segment to be executable". HOT 5
- Don't emit in output profile when sample count is 0. HOT 2
- excessive total_count HOT 1
- sample_reader.cc:102] Error reading from perf_inject_etm_test_loop.data&profile_creator.cc:138] Error reading profile.
- Please allow using system abseil (over bundled abseil)
- Completely broken, will not compile on Clear Linux or other distros I've tried HOT 22
- autofdo needs libprotofbuf-dev
- AutoFDO can not be built with LLVM trunk (LLVM-18)
- Optimization clang with Propeller: create_llvm_prof fails
- Propeller slows down clang ~20% HOT 4
- When support path cloning in propeller
- Build autofdo tool failed for llvm-master HOT 1
- create_gcov can not find binary with buildid and profile_creator can not read profile HOT 6
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from autofdo.