KeWaitForSingleObject is kHighFrequency, so it is silent unless
--log_high_frequency_kernel_calls=true - which confirms the corpus's earlier
"kHighFrequency waits are simply unlogged" note. With the flag the calls do
appear (1944 lines in 40 s), but the emulator slows so far that after SEVENTEEN
minutes the screen was still black and skip_intro had not seen even the intro
movie, with 175 MB of log written. A 2400 s boot budget did not help; the boot
was not going to finish.
Recorded with the numbers so nobody pays them twice, along with the two cheaper
routes: a targeted Canary log line that fires only after a wait has timed out N
times on the same thread (self-selecting, free on a healthy run, one small patch
plus a build that is already configured), or digging the PPCContext out of a
stack frame under gdb - possible but fragile, since the Release binary has symtab
only and no DWARF.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PMRJjbxLqZtsb5Vb7KunPE
80dc6352b6