diff options
Diffstat (limited to 'test-suite/tests/statprof.test')
-rw-r--r-- | test-suite/tests/statprof.test | 72 |
1 files changed, 46 insertions, 26 deletions
diff --git a/test-suite/tests/statprof.test b/test-suite/tests/statprof.test index b2ee41e1b..1fec61765 100644 --- a/test-suite/tests/statprof.test +++ b/test-suite/tests/statprof.test @@ -31,8 +31,22 @@ #:use-module (srfi srfi-1) #:use-module (statprof)) +;; Throw `unresolved' upon ENOSYS. This is used to skip tests on +;; platforms such as GNU/Hurd where `ITIMER_PROF' is is currently +;; unimplemented. +(define-syntax-rule (when-implemented body ...) + (catch 'system-error + (lambda () + body ...) + (lambda args + (let ((errno (system-error-errno args))) + (false-if-exception (statprof-stop)) + (if (= errno ENOSYS) + (throw 'unresolved) + (apply throw args)))))) + (pass-if "statistical sample counts within expected range" - (let () + (when-implemented ;; test to see that if we call 3 identical functions equally, they ;; show up equally in the call count, +/- 30%. it's a big range, and ;; I tried to do something more statistically valid, but failed (for @@ -43,18 +57,18 @@ ;; Disable partial evaluation so that `(+ i i)' doesn't get ;; stripped. (compile '(lambda (n) - (do ((i 0 (+ i 1))) ((= 200 i)) (+ i i))) - #:opts '(#:partial-eval? #f))) + (do ((i 0 (+ i 1))) ((= 200 i)) (+ i i))) + #:opts '(#:partial-eval? #f))) (define run-test (compile '(lambda (num-calls funcs) - (let loop ((x num-calls) (funcs funcs)) - (cond - ((positive? x) - ((car funcs) x) - (loop (- x 1) (cdr funcs)))))))) - + (let loop ((x num-calls) (funcs funcs)) + (cond + ((positive? x) + ((car funcs) x) + (loop (- x 1) (cdr funcs)))))))) + (let ((num-calls 80000) - (funcs (circular-list (make-func) (make-func) (make-func)))) + (funcs (circular-list (make-func) (make-func) (make-func)))) ;; Run test. 20000 us == 200 Hz. (statprof-reset 0 20000 #f #f) @@ -62,25 +76,31 @@ (run-test num-calls funcs) (statprof-stop) - (let* ((a-data (statprof-proc-call-data (car funcs))) - (b-data (statprof-proc-call-data (cadr funcs))) - (c-data (statprof-proc-call-data (caddr funcs))) - (samples (map statprof-call-data-cum-samples - (list a-data b-data c-data))) - (average (/ (apply + samples) 3)) - (max-allowed-drift 0.30) ; 30% - (diffs (map (lambda (x) (abs (- x average))) - samples)) - (max-diff (apply max diffs))) + (let ((a-data (statprof-proc-call-data (car funcs))) + (b-data (statprof-proc-call-data (cadr funcs))) + (c-data (statprof-proc-call-data (caddr funcs)))) + (if (and a-data b-data c-data) + (let* ((samples (map statprof-call-data-cum-samples + (list a-data b-data c-data))) + (average (/ (apply + samples) 3)) + (max-allowed-drift 0.30) ; 30% + (diffs (map (lambda (x) (abs (- x average))) + samples)) + (max-diff (apply max diffs))) + + (let ((drift-fraction (/ max-diff average))) + (or (< drift-fraction max-allowed-drift) + ;; don't stop the test suite for what statistically is + ;; bound to happen. + (throw 'unresolved (pk average drift-fraction))))) - (let ((drift-fraction (/ max-diff average))) - (or (< drift-fraction max-allowed-drift) - ;; don't stop the test suite for what statistically is - ;; bound to happen. - (throw 'unresolved (pk average drift-fraction)))))))) + ;; Samples were not collected for at least one of the + ;; functions, possibly because NUM-CALLS is too low compared + ;; to the CPU speed. + (throw 'unresolved (pk (list a-data b-data c-data)))))))) (pass-if "accurate call counting" - (let () + (when-implemented ;; Test to see that if we call a function N times while the profiler ;; is active, it shows up N times. (let ((num-calls 200)) |