36 lines
796 B
Racket
36 lines
796 B
Racket
#lang racket
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(require syndicate/trie syndicate/tset)
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(define N-PATTERNS 10000)
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(define N-MESSAGES 1000000)
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(struct tuple (a b) #:prefab)
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(define (pat n) (pattern->trie (datum-tset n) (tuple n ?)))
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(define pats
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(time
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(for/fold [(p trie-empty)]
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[(n (in-range N-PATTERNS))]
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(trie-union p (pat n)))))
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;; (display (trie->dot pats))
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(collect-garbage)
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(collect-garbage)
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(collect-garbage)
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(define-values (_result cpu-time delta-ms gc-time)
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(time-apply
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(lambda ()
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(for [(j (in-range N-MESSAGES))]
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(define i (random N-PATTERNS))
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(trie-lookup pats (tuple i i) #f)))
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'()))
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(printf "Delta ~a ms; that is, ~a microsec per routed message, ~a Hz\n"
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delta-ms
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(/ (* 1000.0 delta-ms) N-MESSAGES)
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(/ N-MESSAGES (/ delta-ms 1000.0)))
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