måning

Morning

morning

mornign

morning

Morning

Does anyone know of any small libraries suitable for performance testing / instrumenting small blocks of code with timing measurements? Obviously I know of criterium, which I use already — but I’m not interested in microbenchmarking, more just getting a feel for how long remote calls are taking… e.g. http requests, database queries, and perhaps occaisional blocks of code; where performance can be measured in seconds or minutes. I normally write a macro like this for the job:

(defmacro timeit [& forms]
  `(let [start# (System/currentTimeMillis)]
     ~@forms
     (let [end# (System/currentTimeMillis)
           form-str# ~(if (>= (count forms) 2)
                        `(pr-str '(do ~@forms))
                        `(pr-str '~@forms))]
       (println "Time taken for" form-str# "was" (- end# start#) "ms"))))

Also I’ve seen http://github.com/ptaoussanis/tufte but it’s not really appealing to me…

I think it’d be nice to have something like the above, and perhaps a variant that will re define a var holding a function for you… but surely many people have packaged this up into a library.

@rickmoynihan sounds like a job for tap>?

which these other libs won't have done before

ahh yes good point

Though doesn’t that just mean replacing the println above with a call to tap>? I still need to write the macro — again! 🙂

everything is just println in disguise

that was quite wintlike @otfrom > the wise man bowed his head solemnly and spoke: "theres actually zero difference between println & other programs. "

I do what I can. 😉

You missed the rest of it @alex.lynham