[RFC v3 0/9] make performance is associated with vGPU type

[Gao, Ping A]

On 2017/3/2 15:16, Zhenyu Wang wrote:
> On 2017.03.02 10:19:34 +0800, Ping Gao wrote:
>> v3:	1. rename dummy vGPU to idle vGPU.
>> 	2. introduce an enum for num_vgpu_sched.
>> 	3. rename some structure and function.
>> 	4. comments elaborating. 
>> 	5. didnot add statitic interface as no per-vgpu interface exist.
> Just have a quick review, I think there's some order issues, preceding patch
> in series should not depend on later ones, e.g should first add weight
> interface for vgpu, then add weight based timeslice scheduling function, etc.
> We need each one to be bisect-able, so be careful on patch order.

OK, I will put the last patch forward.

> And weight value setting for vgpu type needs to refresh on latest gvt-staging
> change for fixed vgpu types.

OK, I will rebase the last patch on your newest code.

>
>> v2:
>>         1. use hrtimer to replace delay_work to trigger scheduler.
>>         2. introduce dummy vGPU to help handle performance control.
>>         3. introduce vGPU LRU list to handle longest unsched vGPU.
>>         4. Test result(stability and precision) seems good.
>>
>> v1:
>> 	1. Currrently, scheduler is triggered by delay_work, it's only can be
>> 	   accurate at 10ms level, so have to change the scheduler period to
>> 	   10ms, it will have stability impact.
>> 	2. Test two vGPU type 2 and type 5, the fps of tropic in two guest show 
>>   	   about 5:2, it's workable but the precision is not good.
>>
>> 	TODO: 1. Use htimer replace the delay_work to trigger scheduler.
>> 	      2. Create dummy vGPU to help caculation.   
>>
>> Ping Gao (9):
>>   drm/i915/gvt: use hrtimer replace delayed_work in scheduler
>>   drm/i915/gvt: create an idle vGPU
>>   drm/i915/gvt: insert the idle vGPU into scheduler
>>   drm/i915/gvt: add some statistic routine for scheduler
>>   drm/i915/gvt: factor out the scheduler
>>   drm/i915/gvt: introduce the vGPU LRU list
>>   drm/i915/gvt: add basic function for weight control
>>   drm/i915/gvt: control the scheduler by timeslice usage
>>   drm/i915/gvt: define weight according to vGPU type
>>
>>  drivers/gpu/drm/i915/gvt/gvt.c          |  17 ++
>>  drivers/gpu/drm/i915/gvt/gvt.h          |  15 ++
>>  drivers/gpu/drm/i915/gvt/handlers.c     |   1 +
>>  drivers/gpu/drm/i915/gvt/kvmgt.c        |   4 +-
>>  drivers/gpu/drm/i915/gvt/sched_policy.c | 356 +++++++++++++++++++++++++++-----
>>  drivers/gpu/drm/i915/gvt/sched_policy.h |   2 +
>>  drivers/gpu/drm/i915/gvt/vgpu.c         |  59 ++++++
>>  7 files changed, 402 insertions(+), 52 deletions(-)
>>
>> -- 
>> 2.7.4
>>
>> _______________________________________________
>> intel-gvt-dev mailing list
>> intel-gvt-dev at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/intel-gvt-dev