Hi! Noticed today that a rebuild of basically the same tree (a few commits apart) in CI result in just 11% hit rate of ccache:
https://gitlab.com/mjt0k/qemu/-/jobs/6947445337#L5054 while it should be near 100%. What's interesting in there is: 1) cache size is close to max cache size, and more important, 2) cleanups performed 78 so it has to remove old entries before it finished the build. So effectively, our ccache usage is an extra burden, not help. I should be increased at least, I think. But it's actually difficult to say really, - is the cache shared between all builds or is it unique for each build config? Because if it the former, it shouldn't even work since different ccache versions use different format of the files in cache. What's unique in my pipeline run - I ran just a single build job in two pipelines, nothing more. Thanks, /mjt -- GPG Key transition (from rsa2048 to rsa4096) since 2024-04-24. New key: rsa4096/61AD3D98ECDF2C8E 9D8B E14E 3F2A 9DD7 9199 28F1 61AD 3D98 ECDF 2C8E Old key: rsa2048/457CE0A0804465C5 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5 Transition statement: http://www.corpit.ru/mjt/gpg-transition-2024.txt
