The doc claimed 181e8e36 showed a renderer and a GPU dying together "in the same
tree", and read that as a whole-cgroup kill. Measured from the payload they are
9m 04.9s apart — GPU process_gone_suppressed at 22:29:32.397Z, renderer report
Created at 22:38:37.276Z — so they are two independent single-process kills.
systemd-oomd is likewise demoted from explanation to candidate: it kills the
whole cgroup, and Orca's main process survived and authored the report in all
three cases (processMetricsBrowserCount: 1 post-death). These fields exist to
DISTINGUISH the killers, not to ratify one chosen in advance. The same claim is
scrubbed from the PSI reader header and the PSI test's field-report note.
Mutation testing also found `total === undefined` in cgroupCeilingBelowHostRam
unfalsifiable on its own: deleting only that term left the suite green, while
deleting it together with `lowest < total` was caught. The new test fixes a
readable ceiling beside an unreadable MemTotal, which kills the isolated mutant.
m4air
f452f04415