Pinboard (jm) recent bookmarks from jm Boundary's new server monitoring free offering 2014-07-15T09:14:05+00:00 jm boundary monitoring network ops metrics alarms tcp ip netstat Dynamic Tuple Performance On the JVM 2014-05-16T08:56:30+00:00 jmgenerates heterogeneous collections of primitive values and ensures as best it can that they will be laid out adjacently in memory. The individual values in the tuple can either be accessed from a statically bound interface, via an indexed accessor, or via reflective or other dynamic invocation techniques. FastTuple is designed to deal with a large number of tuples therefore it will also attempt to pool tuples such that they do not add significantly to the GC load of a system. FastTuple is also capable of allocating the tuple value storage entirely off-heap, using Java’s direct memory capabilities. ]]> jvm java gc off-heap storage boundary memory Boundary's Early Warnings alarm 2013-06-27T21:09:22+00:00 jm network-monitoring throughput boundary service-metrics alarming ops statistics Boundary Product Update: Trends Dashboard Now Available 2013-04-12T14:15:16+00:00 jm boundary time-series tsd prediction metrics smoothing dataviz dashboards Boundary Techtalk - Large-scale OLAP with Kobayashi 2013-04-10T17:12:32+00:00 jmDietrich Featherston, Engineer at Boundary, walks through the process of designing Kobayashi, the time-series analytics database behind our network metrics. He goes through the false-starts and lessons learned in effectively using Riak as the storage layer for a large-scale OLAP database.  The system is ultimately capable of answering complex, ad-hoc queries at interactive latencies. ]]> video boundary tsd riak eventual-consistency storage kobayashi olap time-series Passively Monitoring Network Round-Trip Times - Boundary 2013-02-18T10:21:03+00:00 jm tcp boundary monitoring network ip passive-monitoring rtt timestamping A Non-Blocking HashTable by Dr. Cliff Click : programming 2013-01-08T22:31:34+00:00 jm data-structures algorithms non-blocking concurrency threading multicore cliff-click azul maps java boundary