giorgio-v

(require '[clojure.test :as test])

; Rewrite clojure.test to generate data structures instead of writing to
; stdout
(def ^:dynamic *results*
  "Bound dynamically to an atom wrapping a vector of test report maps")

(defn add-name
  "Given a testing report map, assoc's on a :name derived from the current
  `clojure.test/testing` context."

giorgio-v

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giorgio-v

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs