10 articles tagged Concurrency.
There is a wonderful phrase that gets tossed around in corporate IT meetings.
Read article: Risk Management: Or How Corporate IT Learned to Fear Everything Except the Things That Actually…Check out JSR 316 and this article. There is also a Slashdot.org thread on the subject.
Read article: JEE 6 Draft Proposal Is Available For Public ReviewThe original article can be found here. Introduction
Read article: Concurrency And Server-Side Networking APIs — Part 4This is part three of an exploration of how concurrency in networking APIs works in Unix-like operating systems and Java technology. This article now looks at the Java equivalents of several C-based server implementations that have been presented. If you haven’t read this series from the beginning,…
Read article: Concurrency And Server-Side Networking APIs — Part 3In the second part of this series we continue to explore how Unix-like operating systems implement the networking API and threading API. In particular, we are supremely interested in how the kernel allows server programs accept incoming connections. Part two explores implementing concurrency in…
Read article: Concurrency And Server-Side Networking APIs — Part 2This article explores how a Sun Hotspot JVM behaves when accepting incoming TCP/IP socket connections. The behavior of native server programs–written in C–are also explored to better understand how concurrency can be achieved. Then, a comparison of how these runtime environments implement…
Read article: Concurrency And Server-Side Networking APIs — Part 1Several terms have been used liberally throughout articles on thinkmiddleware.com. A moment should be taken to formally define them. I am going to attempt to present these concepts in as generic a sense as possible, but the truth of the matter is, every OS has its own threading model and…
Read article: Threads, Threads Everywhere. And, Not a Needle In SightIt happens. End users are complaining about a slow system or a request that never returned. You log into a production middleware server and notice that a java process is consuming an entire CPU or worst every available CPU on the box. It has happened again–a thread(s) has gone into an infinite loop…
Read article: Mapping An LWP Using Excessive CPU Time To a Java ThreadThread dumps are the basic diagnostic tool for JVMs. Thread dumps present a partial state of each Java thread in a running JVM. I say partial because it doesn’t present all information that captures the state of a Java thread. The state of a running Java thread is stored in a series of data…
Read article: Generating Thread DumpsIn this article, I wanted to present a brief tutorial regarding troubleshooting deadlock conditions in JVMs. Before one can troubleshoot a deadlock condition, one needs to understand what it is; to this end, I have written a simple Java program called DeadLock.java, which is guaranteed to very…
Read article: Troubleshooting Deadlock Conditions With Monitor Locks In Java Virtual Machines
