Kamon - Distributed Tracing, Metrics and Context Propagation for application running on the JVM

	Commit message (Collapse)	Author	Age	Files	Lines
*	! all: refactor the core metric recording instruments and accomodate UserMetrics	Ivan Topolnjak	2014-07-03	1	-17/+18
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	This PR is including several changes to the kamon-core, most notably: - Formalize the interface for Histograms, Counters and MinMaxCounters. Making sure that the interfaces are as clean as possible. - Move away from the all Vector[Measurement] based Histogram snapshot to a new approach in which we use a single long to store both the index in the counts array and the frequency on that bucket. The leftmost 2 bytes of each long are used for storing the counts array index and the remaining 6 bytes are used for the actual count, and everything is put into a simple long array. This way only the buckets that actually have values will be included in the snapshot with the smallest possible memory footprint. - Introduce Gauges. - Reorganize the instrumentation for Akka and Scala and rewrite most of the tests of this components to avoid going through the subscription protocol to test. - Introduce trace tests and fixes on various tests. - Necessary changes on new relic, datadog and statsd modules to compile with the new codebase. Pending: - Finish the upgrade of the new relic to the current model. - Introduce proper limit checks for histograms to ensure that we never pass the 2/6 bytes limits. - More testing, more testing, more testing. - Create the KamonStandalone module.
*	= statsd: force the decimal format to use dot (.) as decimal point separator	Ivan Topolnjak	2014-06-09	1	-3/+7
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*	+ statsd: added kamon counter instrument	Diego	2014-05-02	1	-1/+1
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*	= statsd: improve metrics sender performance	Ivan Topolnjak	2014-04-28	1	-24/+26
\| \| \| \| \| \|	By building the metrics data in a simple StringBuilder instead of a ByteStringBuilder the processing time for the metrics sender was reduced by ~60% in a test application, from ~2.8ms to ~1.2ms.
*	! statsd: the max-packet-size setting is now expressed in bytes rather than ↵	Ivan Topolnak	2014-04-25	1	-6/+5
\| \| \| \|	a plain Int, fixes #27
*	+ statsd: report trace metrics to StatsD	Ivan Topolnak	2014-04-09	1	-5/+3
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*	= statsd: avoid using scientific notation when rendering sampling rates	Ivan Topolnak	2014-04-08	1	-1/+4
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*	= statsd: correctly send multiple packets for a single metric	Ivan Topolnjak	2014-04-08	1	-22/+31
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*	! statsd: take advantange of the multi-measurement format	Ivan Topolnjak	2014-04-07	1	-16/+66
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*	+ site: added changelog and license views	Diego	2014-04-03	1	-2/+2
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*	= statsd: honor the max-packet-size setting and include newline char on ↵	Ivan Topolnjak	2014-04-03	1	-11/+9
\| \| \| \|	multi-metric packets
*	+ statsd: first working implementation with processing-time and ↵	Ivan Topolnak	2014-04-03	1	-0/+65
	time-in-mailbox metrics for actors