# DF-3384 attempts (guest DragonFly 6.5-DEVELOPMENT X86_64_GENERIC)
v1 single-shot 1s stagger: "[T1] read#1 returned 176" before flush -> no interference; survived
v2 timing scan 300us..20ms, 512KiB hold buffer, 200 attempts: all survived
v3 BIOCFLUSH spam across read#1, 60 attempts: all survived
v4 BIOCFLUSH spam + read into cold (evicted) file pages of a 3.5GiB file:
   process ran 7+ min at 99.4% CPU without panic; killed (pid 931); guest up.