This book is written by Brendan Gregg and Jim Mauro, both expert users in DTrace and the Solaris Internals from Prentice Hall. It covers the key features of the DTrace environment, the D language that is used to write the scripts used to provide answers to questions regarding the performance of the system under question.
In this presentation from QCon London 2008, Bertrand Delsart discusses real-time (RT) computing requirements in banking, RT Java history, priority semantics, RT APIs, Determinism and NoHeapRealtimeThreads, RT Garbage Collection, soft vs. hard RT, deadline miss handlers, event-driven requests with deadlines, reducing context switches, and benefits of RT Java and the RT Garbage collector.
Rubinius 1.0RC2 adds binary installers, while Ruby 1.9.2 will get DTrace support. IronRuby moves closer to 1.0 and SharpDevelop 3.1 gains IronRuby support. Also: WEBRick users should consider upgrading to the latest versions of Ruby 1.8.x and 1.9.1 because of a recently discovered vulnerability.
Developing Ruby and RoR apps might be easy - but what to do when something goes wrong, the interpreter misbehaves or memory leaks spring up. We look at the current options for taking a peek inside Ruby applications.
The newly released Mac OS X Leopard ships with the Ruby 1.8.6 and various Ruby libraries and tools installed. Leopard also includes DTrace probes for profiling Ruby, XCode and Interface Builder support and more.
InfoQ investigates how three companies recently collaborated to use DTrace, a powerful open source process introspection tool, to find and fix a substantial Rails latency issue.
DTrace is an open-source dynamic tracing framework originally written for Solaris 10 and coming soon to OS X, Linux and BSD systems. A Java API for DTrace is available, allowing you to run DTrace scripts and allowing you to present the output in a more meaningful way.
