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On Wed, Jun 08, 2005 at 06:11:55PM +0530, lk wrote: > > In the 2.6 kernel, there is one run queue per CPU, in case of an SMP. > > After a thread is created, how does the scheduler determine which run > > queue it goes to? > > First it forked process (child) gets the same CPU as that of parent. > forking a child gets the same CPU and later part of fork will call > wake_up_new_task () to fetch the run-queue of the CPU and > __activate_task () is called to move task into run-queue. > Later rescheduling of the process may move process to another > run-queues. In -mm kernels, Nick has recently added balance on exec/fork. > > By the way, in an SMT/hyperthreading processor, does the latest kernel > > version assign one run queue per physical CPU, or per virtual > > processor? > > > > one run-queue per physical CPU No. Each logical processor has its own runqueue. thanks, suresh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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