Hi. (edited repost due to unfortunate HTML email). Until the reproducible BTF changes land in a new pahole version, and for anyone stuck on older versions, pahole -J -j typically produces non-deterministic BTF. For Android, we are converging to hermetic, reproducible builds. .BTF sections are a significant difference we see. I have trivial patches to pass -j1 instead of -j for the older versions we are using (1.23 and 1.25). Trivial patches: https://android-review.googlesource.com/q/Ibd72ac638faa1826f6655b336cc7001591ea70f1 Gaining determinism for the older versions means giving up some performance. About a factor of 2.1 in our case (or an extra 10s on vmlinux). Do others want performance or determinism, should I send patches to LKML and the stable list? Off-topic: pahole -J -j9 is faster than -j on my machine with 36 cores, by another factor of 2. This is v1.25. -j1 18.7s, -j9 4.5s, -j 8.9s. Regards, Giuliano.
