Why does an extraneous build step make my Zig app 10x faster?

Re:Why does an extraneous build step make my Zig app 10x fas... by rofrol on Wednesday March 20, 2024 @01:09PM (#39769366)

This @mtlynch

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Re:Why does an extraneous build step make my Zig app 10x fas... by vlovich123 on Wednesday March 20, 2024 @01:34PM (#39769697)

To sanity check myself, I reran this without the buffered reader and still don't see the slow execution time:

> echo '60016000526001601ff3' | xxd -r -p > | zig build run -Doptimize=ReleaseFast

> execution time: 28.889µs

So I think my machine config for whatever reason isn't representative of whatever OP is using.

Linux-ck 6.8 CONFIG_NO_HZ=y CONFIG_HZ_1000=y

Intel 13900k

zig 0.11

bash 5.2.26

xxd 2024-02-10

Would be good if someone that can repro it compares the two invocation variants with buffered reader implemented & lists their config.

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