Pluggable Flame Graphs for Clojure.
It's easier than you think. Get the newest release. Require the flames.core namespace and start the profiler.
(require '[flames.core :as flames])
(def flames (flames/start! {:port 54321, :host "localhost"}))Wait 5 seconds and check out http://localhost:54321/flames.svg.
When you're done stop the profiler by invoking:
(flames/stop! flames)or
(.close flames)clojure.core/with-open works too.
flames.core/start! accepts a map of following options:
:host– host to which the HTTP server will bind,:port– port on which the HTTP server will listen,:dt– number of seconds of profiling between updates of the flame graph,:load– target fraction of one core's CPU time to use for profiling.
Find more information about :dt and :load options as well as principles of
operation of the profiler in README of riemann-jvm-profiler.
Contents of the flame graph can be filtered using regular expressions passed
in filter and remove query params.
GET /flames.svg?remove=%28socketRead|epollWait|socketAccept|readBytes%29
GET /flames.svg?filter=flames.core
Completely experimental.
Copyright © 2015 Jan Stępień
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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