On Sun, 2017-08-06 at 12:22 -0400, Meng Xu wrote: > This series of patches make RTDS scheduler work-conserving > without breaking real-time guarantees. > VCPUs with extratime flag set can get extra time > from the unreserved system resource. > System administrators can decide which VCPUs have extratime flag set. > > Example: > Set the extratime bit of all VCPUs of domain 1: > # xl sched-rtds -d 1 -v all -p 10000 -b 2000 -e 1 > Each VCPU of domain 1 will be guaranteed to have 2000ms every 10000ms > (if the system is schedulable). > If there is a CPU having no work to do, > domain 1's VCPUs will be scheduled onto the CPU, > even though the VCPUs have got 2000ms in 10000ms. > > Clear the extra bit of all VCPUs of domain 1: > # xl sched-rtds -d 1 -v all -p 10000 -b 2000 -e 0 > > Set/Clear the extratime bit of one specific VCPU of domain 1: > # xl sched-rtds -d 1 -v 1 -p 10000 -b 2000 -e 1 > # xl sched-rtds -d 1 -v 1 -p 10000 -b 2000 -e 0 > Oh, BTW, can you please update 'docs/features/sched_rtds.pandoc' too?
Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
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