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Author neonene
Recipients Mark.Shannon, kj, lemburg, malin, neonene, pablogsal, paul.moore, rhettinger, steve.dower, tim.golden, vstinner, zach.ware
Date 2021-09-18.02:01:52
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Message-id <>
> (32-bit: "1.07", 64-bit: "1.14": "higher the slower" wrote neonene)

32-bit and 64-bit are in reverse. I compared b1 and a7 because this can be confirmed by anyone with official binary. If 7% of my patch has little to do with the gap, then I will be happy that 3.10 can be far faster.

>How can I build Python with PGO on Windows?

Try the following,

   PCbuild\build.bat -p x64 --no-tkinter --pgo

Before building, your object.h needs to replace
    static inline int Py_ALWAYS_INLINE
    static Py_ALWAYS_INLINE int 

In my case, pgo got stuck on linking with the object.h.

I'm waiting the reply from developercommunity.
Date User Action Args
2021-09-18 02:01:52neonenesetrecipients: + neonene, lemburg, rhettinger, paul.moore, vstinner, tim.golden, Mark.Shannon, zach.ware, steve.dower, malin, pablogsal, kj
2021-09-18 02:01:52neonenesetmessageid: <>
2021-09-18 02:01:52neonenelinkissue45116 messages
2021-09-18 02:01:52neonenecreate