Mechanical Sympathy

Significantly improved performance and a cleaner API are the key takeaways for the Disruptor 2.0 concurrent programming framework for Java....

Within our industry we use a huge range of terminology.  Unfortunately we don’t all agree on what individual terms actually mean.  I so ofte...

In my previous post on False Sharing I suggested it can be avoided by padding the cache line with unused long fields.  It seems Java 7 got...

Message rates between threads are fundamentally determined by the latency of memory exchange between CPU cores.   The minimum unit of transf...

Memory is stored within the cache system in units know as cache lines.  Cache lines are a power of 2 of contiguous bytes which are typically...

In this article I'll discuss the most fundamental technique in concurrent programming known as memory barriers, or fences, that make th...

In a series of articles I’ll aim to show the performance impact of processor affinity in a range of use cases. Background A thread of e...