The operating system is able to determine how to arrange difference processes/threads onto different cpu cores, the os scheduler does the work well. So when do we really need to call functions like sched_setafficity() for a process, or pthread_setaffinity_np() for a pthread? It doesn’t seem to be able t…
Tag: affinity
Ada program works in Linux but not in GPS Windows 10
Thanks in advance for any help. I am currently doing some beginner work on ada programming and I have installed GNAT Programming Studio (GPS) from http://libre.adacore.com/download/configurations# I have Windows 10 64-bits. I was given the following code at school: I opened the file in GPS, built it (no error…
Unbound workqueue’s kthreads CPU affinity
Is there a way to set CPU affinity for unbound workqueue’s kthreads (those that named kthread/uXX:y)? Something like cpu mask for regular workqueues. Is it a good idea to set it for each kthread using taskset? Answer Workqueue subsystem exports sysfs attribute for setting cpu affinity for unbound worker…
Linux – make sure a core is exclusively saved for critical tasks
I have a process that is launched on a Linux-based machine with exactly two cores. Let’s assume my process is the only process in the system (I will ignore other processes and even the system’s ones). My process is divided to two parts: Critical performance code Low priority code Also let’s …
Is it possible to set pthread CPU affinity in OS X?
In Linux there is a sched_setaffinity() function defined in sched.h, but I can’t seem to find anything like that in Mac OS X 10.6 pthreads implementation… If it is not possible to set affinity, what is the default policy in OS X? Answer Mac OS X has Thread Affinity API and you can use it with pthr…