Hi Steve, thanks for your reply :-) I will try this. I am evaluating some scheduling algorithm, so I would like to learn about how the threads migrate. That is why I am asking for such kind of function. thank for your help! Bes regards, Yang 2008/9/16, Steve Graegert <graegerts@xxxxxxxxx>: > Xu Yang, > > On Linux sched_getcpu(3) comes to mind. This function is not particularly > useful since the information returned by the function might not be correct > at the point of its return as threads can be switched to other CPUs (read: > cores) at anytime (although CPU/core switching can be quite expensive due to > cache line bouncing for instance) > > So, once the information has been obtained it might already be obsolete. > Anyway, I hope that is what you're looking for. > > \Steve > > -- > > Steve Grägert > > > > On Tue, Sep 16, 2008 at 3:26 PM, Xu Yang <risingsunxy@xxxxxxxxxxxxxx> wrote: > > > > Hi guys, > > > > I am looking for a function that can show me the current thread is > > running on which cpu. > > > > e.g I am using pthread to write a multithreaded program, in each > > thread I would like to insert such kind of function so that I can know > > on which cpu this thread is running on. > > > > which function should be used? > > > > thanks for the help!! > > > > best regards, > > > > > > > > Yang > > -- > > To unsubscribe from this list: send the line "unsubscribe > linux-c-programming" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at > http://vger.kernel.org/majordomo-info.html > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
