Hi, I'm writing a multithreaded app. I was using the boost::interprocess classes (version 1.36.0) Essentially, I have worker threads that need to be notified when work is available for them to do. I tried both the "semaphore" and "condition" approaches. In both cases, the CSwitch (context switch) for the worker threads seemed very h...
I have a network of Java Threads (Flow-Based Programming) communicating via fixed-capacity channels - running under WindowsXP. What we expected, based on our experience with "green" threads (non-preemptive), would be that threads would switch context less often (thus reducing CPU time) if the channels were made bigger. However, we foun...
Reading CLR via C# 2.0 (I dont have 3.0 with me at the moment) Is this still the case: If there is only one CPU in a computer, only one thread can run at any one time. Windows has to keep track of the thread objects, and every so often, Windows has to decide which thread to schedule next to go to the CPU. This is additional code that h...
Hi All, When application enters in background running state, how much dirty memory usages is good to go. In apple video it's mentioned that the dirty memory should be reduced as much as we can. But in my App, I am using navigation controller to push and pop views. After moving from about 20 different pages, the dirty memory usages reac...
When doing context switching on a single-core processor, the code responsible is executed on the only CPU which takes care of switching the threads. But how is this done when we have multiple CPUs? Is there a master CPU which does all the context switching of all slave CPUs? Is each CPU responsible for its own context switching? If so, ...