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Levi Neuwirth fffedf4fb4 Fix flaky m5_8 backoff_scaling assertion (CI regression) 
Unrelated to the L4 LSP work — pre-existing timing flake in the
SSH attach-reconnect suite, surfaced on a loaded CI runner and
blocking this PR's checks. Fixed here to unblock merge.

backoff_scaling_observable_in_wall_clock_runtime asserted
slow >= 3 * fast. Both runs pay the same fixed process-spawn +
3×handshake-EOF overhead, which does not scale with
PMACS_TEST_BACKOFF_SCALE_MS and dominates these sub-second runs,
so slow/fast stays well under 3x under load even though the
scaled sleep works (observed: fast=260ms, slow=488ms → 1.87x).

Replace the overhead-sensitive ratio with the difference
slow - fast, which cancels the constant spawn/handshake overhead
and isolates exactly the scaled sleep (theoretically
(50+100) − (1+2) ≈ 147ms). A 75ms floor sits far above scheduler
jitter yet collapses to ~0 if the env var were ignored, so it
still catches the "env var not fed through" regression — without
the flakiness. The two existing absolute-floor assertions are
kept. Verified 5/5 across repeated local runs.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
 		2026-05-19 12:39:17 -04:00
..
common M11.1: semantic-frontend protocol scaffolding (wire + capability) 2026-05-18 19:39:07 -04:00
fixtures V0.2-prerequisite pull-forward + M10.11 clean audit round 2026-05-18 10:31:31 -04:00
acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m3_acceptance.rs Initial commit: v0.1.0 2026-05-03 19:51:06 -04:00
m4_acceptance.rs T M4.5 L4: WorkspaceEdit resource ops (create/rename/delete file) 2026-05-19 12:31:35 -04:00
m5_5_acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m5_6_acceptance.rs Initial commit: v0.1.0 2026-05-03 19:51:06 -04:00
m5_7_acceptance.rs CI fixes 2026-05-18 12:24:35 -04:00
m5_8_acceptance.rs Fix flaky m5_8 backoff_scaling assertion (CI regression) 2026-05-19 12:39:17 -04:00
m5_perf_acceptance.rs M11.1: semantic-frontend protocol scaffolding (wire + capability) 2026-05-18 19:39:07 -04:00
m6_4_repl_acceptance.rs Fix PTY final-output drain race 2026-05-04 09:44:30 -04:00
m6_5_repl_acceptance.rs CI fixes v2 2026-05-18 13:12:10 -04:00
m6_7_scrollback_acceptance.rs Initial commit: v0.1.0 2026-05-03 19:51:06 -04:00
m6_8_multi_repl_acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m6_perf_acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m7_3_acceptance.rs Fix CI and Documentation issues 2026-05-04 10:19:19 -04:00
m7_5_acceptance.rs Pin toolchain to 1.95.0 + mechanical clippy/rustc fixes 2026-05-18 11:38:57 -04:00
m7_6_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_7_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_8_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_9_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_10_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_11_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m7_review_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_1_acceptance.rs Pin toolchain to 1.95.0 + mechanical clippy/rustc fixes 2026-05-18 11:38:57 -04:00
m8_1c_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_1d_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_2_acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m8_3_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_5_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_6_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_7_acceptance.rs M7 tail: package system, audit lint, lockfile, resolver 2026-05-07 16:50:37 -04:00
m8_9_acceptance.rs V0.2-prerequisite pull-forward + M10.11 clean audit round 2026-05-18 10:31:31 -04:00
m8_10_acceptance.rs V0.2-prerequisite pull-forward + M10.11 clean audit round 2026-05-18 10:31:31 -04:00
m9_1_acceptance.rs T M4.5 async bridge: LSP requests settle async-runtime jobs 2026-05-18 19:36:17 -04:00
m9_2_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m9_3_acceptance.rs Collapse if-let nests into let-chains (MSRV-1.95 collapsible_if sweep) 2026-05-18 14:29:36 -04:00
m9_4_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m9_5_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m9_6_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m9_7_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m9_8_acceptance.rs M9 ship gate 2026-05-09 15:04:23 -04:00
m10_2_perf.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_10_perf.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_10_postcard_unknown_variant.rs M10.10 ship gate 2026-05-13 16:28:46 -04:00
m10_11_acceptance.rs M11.1: semantic-frontend protocol scaffolding (wire + capability) 2026-05-18 19:39:07 -04:00
m10_11_perf.rs M10.11: adversarial two-laptop acceptance + jitter; the M10 arc verified 2026-05-15 20:51:00 -04:00
m11_5_semantic_acceptance.rs M11.5: semantic frontend<->instance glue (SemanticClient + e2e) 2026-05-18 21:24:36 -04:00