context-switch

I'm running Service Bus on Azure, pumping about 10-100 messages per second . Recently I've switched to .net 4.5 and all excited refactored all the code to have 'async' and 'await ' at least twice in each line to make sure it's done 'properly' :) Now I'm wondering whether it's actually for better or for worse . If you could have a look at the code snippets and let me know what your thoughts are. I especially worried if the thread context switching is not giving me more grief than benefit, from all the asynchrony... (looking at !dumpheap it's definitely a factor) Just a bit of description - I

I have a multi-threaded application, and in a certain section of code I use a Stopwatch to measure the time of an operation: MatchCollection matches = regex.Matches(text); //lazy evaluation Int32 matchCount; //inside this bracket program should not context switch { //start timer MyStopwatch matchDuration = MyStopwatch.StartNew(); //actually evaluate regex matchCount = matches.Count; //adds the time regex took to a list durations.AddDuration(matchDuration.Stop()); } Now, the problem is if the program switches control to another thread somewhere else while the stopwatch is started, then the

I am working on a threaded application on Linux in C++ which attempts to be real time, doing an action on a heartbeat, or as close to it as possible. In practice, I find the OS is swapping out my thread and causing delays of up to a tenth of a second while it is switched out, causing the heartbeat to be irregular. Is there a way my thread can hint to the OS that now is a good time to context switch it out? I could make this call right after doing a heartbeat, and thus minimize the delay due to an ill timed context switch. It is hard to say what the main problem is in your case, but it is most

I was studying about interrupts. So most architecture are interrupt driven, if everything is interrupt driven, how fast the processor can handle all of those. For example, while pressing a key board keys, it creates an interrupt asking the kernel to look for the buffer for new characters, in that case, how fast the processor can serve, also when an interrupt is put, the processor needs to switch to kernel space and that costs a lot in terms of context switch. So I assume, even after all these if the processor has a good performance, then I can only assume that the time between two key strokes