Hi, On 2025-05-27 10:12:28 -0400, Tom Lane wrote: > Andres Freund <and...@anarazel.de> writes: > > This is on a m4 mac mini. I'm wondering if there's some hardware specific > > memory ordering issue or disk speed based timing issue that I'm just not > > hitting. > > I dunno, I've seen it on three different physical machines now > (one M1, two M4 Pros). But it is darn hard to repro, for sure.
I just meant that it seems that I can't reproduce it for some as of yet unknown reason. I've now been through 3k+ runs of 027_stream_regress, without a single failure, so there has to be *something* different about my environment than yours. Darwin m4-dev 24.1.0 Darwin Kernel Version 24.1.0: Thu Oct 10 21:06:23 PDT 2024; root:xnu-11215.41.3~3/RELEASE_ARM64_T8132 arm64 cc -v Apple clang version 16.0.0 (clang-1600.0.26.4) Target: arm64-apple-darwin24.1.0 Thread model: posix I guess I'll try to update to a later version and see if it repros there? Greetings, Andres Freund
