#lang imperative-syndicate/test-implementation
;; Measurement of presence processing.
;; Peers observe each other, AND ALSO process the resulting routing events.

(require logbook)

(assertion-struct presence (id))

(define (run #:peer-count [peer-count 100])
  (define event-count 0)
  (define start-time (current-inexact-milliseconds))
  (test-case [(for [(id (in-range peer-count))]
                (spawn (assert (presence id))
                       (field [peer-count 0])
                       (on (asserted (presence $peer))
                           (set! event-count (+ event-count 1))
                           (peer-count (+ (peer-count) 1)))))])
  (define stop-time (current-inexact-milliseconds))
  (define delta (- stop-time start-time))
  (values event-count delta))

(module+ main
  (define E (standard-logbook-entry (default-logbook #:verbose? #t) "minimart" "sum-all-imperative-syndicate"))
  (define T (logbook-table E "presence-processing"
			   #:column-spec '(number-of-peers
                                           secs/event
                                           events/sec
                                           secs/peer
                                           peers/sec
                                           event-count
                                           run-duration-ms)))
  ;; Warmup
  (let ()
    (run #:peer-count 1)
    (run #:peer-count 10)
    (void))
  ;; Real run
  (for ((n
         (list* 1 2 5
                (let loop ((n 10))
                  (if (>= n 1000)
                      '()
                      (cons (inexact->exact (round n))
                            (loop (* n (sqrt (sqrt 2))))))))
	 ))
    (collect-garbage)
    (collect-garbage)
    (collect-garbage)
    (define-values (event-count run-duration-ms) (run #:peer-count n))
    (write-logbook-datum! T (list n
                                  (/ (/ run-duration-ms 1000.0) event-count)
                                  (/ event-count (/ run-duration-ms 1000.0))
                                  (/ (/ run-duration-ms 1000.0) n)
                                  (/ n (/ run-duration-ms 1000.0))
				  event-count
                                  run-duration-ms))))