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Original Post: December 2012 New Java Performance Tips
Feed Title: JavaPerformanceTuning.com
Feed URL: http://www.javaperformancetuning.com/newsletters.rss
Feed Description: JavaPerformanceTuning.com lists all the information and resources available for Java performance tuning
The latest Java performance tips from around the web, such as "The USE (utilization, saturation, and errors) methodology for identifying performance issues is for early use in a performance investigation to identify systemic bottlenecks quickly. It can be summarized as: For every resource, check utilization, saturation, and errors. Utilization is the percentage of time that the resource is busy servicing work during a specific time interval; Saturation is the degree to which a fully utilized resource has extra work pending; errors include retries as well as failures (retries often indicate a performance issue). Resources to monitor include: CPU utilization per core; CPU run-queue length; CPU faults; Avalable free memory; paging/swapping; failed mallocs; network IO utilization; NIC saturation; storage controller utilization; storage device utilization; storage device wait queue length; storage device error count; lock utilization (how long the locks were held); lock saturation (the number of threads waiting to acquire the lock); thread pool utilization (busy vs idle threads); thread pool saturation (waiting requests count); process/thread errors (e.g. can't fork); file descriptor errors (e.g. can't allocate/create)."