(** TODO: Figure out how to test "sanity" for the ltac profiler output *) Fixpoint fact (n : nat) := match n with 0 => 1 | S n' => n * fact n' end. Fixpoint walk (n : nat) := match n with 0 => tt | S n => walk n end. Ltac slow := idtac + (do 2 (let x := eval lazy in (walk (fact 9)) in idtac)). Ltac slow2 := idtac + (do 2 (let x := eval lazy in (walk (fact 9)) in idtac)). Ltac multi := idtac + slow + slow2. SetLtac Profiling. Goal True. Timetry (multi; fail). (* Warning: Ltac Profiler cannot yet handle backtracking into multi-success tactics; profiling results may be wildly inaccurate.
[profile-backtracking,ltac] *)
Show Ltac Profile. (* Used to be: total time: 0.000s
tactic local total calls max ────────────────────────────────────────┴──────┴──────┴───────┴─────────┘ ─multi --------------------------------- 47.1% 47.1% 1 0.000s ─slow ---------------------------------- 35.3% 35.3% 1 0.000s ─slow2 --------------------------------- 17.6% 17.6% 1 0.000s
tactic local total calls max ────────────────────────────────────────┴──────┴──────┴───────┴─────────┘ ─multi --------------------------------- 47.1% 47.1% 1 0.000s ─slow ---------------------------------- 35.3% 35.3% 1 0.000s ─slow2 --------------------------------- 17.6% 17.6% 1 0.000s
*) (* Now: total time: 2.074s
tactic local total calls max ────────────────────────────────────────┴──────┴──────┴───────┴─────────┘ ─multi --------------------------------- 0.0% 100.0% 6 1.119s ─slow ---------------------------------- 54.0% 54.0% 3 1.119s ─slow2 --------------------------------- 46.0% 46.0% 3 0.955s
tactic local total calls max ────────────────────────────────────────┴──────┴──────┴───────┴─────────┘ ─multi --------------------------------- 0.0% 100.0% 6 1.119s ├─slow -------------------------------- 54.0% 54.0% 3 1.119s └─slow2 ------------------------------- 46.0% 46.0% 3 0.955s
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