Date: Wed, 8 Oct 2008 14:06:14 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: ushasri tummala <tummala.ushasri@gmail.com> Subject: Re: What is the time between 2 mi_switches in freebsd. Message-ID: <200810081406.14916.jhb@freebsd.org> In-Reply-To: <53fa490b0810071947j23fc0f72n5360b6f174ddc96d@mail.gmail.com> References: <53fa490b0810071947j23fc0f72n5360b6f174ddc96d@mail.gmail.com>
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On Tuesday 07 October 2008 10:47:16 pm ushasri tummala wrote: > What is the time between 2 mi_switches in freebsd?In which variable is this > information stored? > > Could you plz help me out with this There isn't a fixed timeslice due to preemption for interrupts, etc. However, the default time slice is available as the kern.sched.quantum sysctl: % sysctl -d kern.sched.quantum kern.sched.quantum: Roundrobin scheduling quantum in microseconds In the kernel it is stored as a static (private) variable in the scheduler implementation. -- John Baldwin
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