[Intel-gfx] Iris pro broadwell power issue

Hello, Our application uses intel HD graphics and media hardware. To date we have been successfully using ivy bridge and haswell processors. Recently we have been evaluating iris pro broadwell in the form of E3-1265Lv4 and to our surprise have found that it seems to use much more energy (~5-10x) f

[Intel-gfx] Missed IRQs on IVB while running intel_gpu_top

Hi, I have an app that uses the IVB bitstream hardware (via libva/intel-driver), and I have noticed some reported missed bsd IRQs in dmesg. After some testing I believe this only occurs when I run intel_gpu_top, so I'm assuming this is an issue with intel_gpu_top rather than the resolved bug 38862

Re: [Intel-gfx] IVB GPU turbo

On 18 May 2012 22:25, Jesse Barnes wrote: > On Thu, 17 May 2012 21:11:45 +0100 > Joe Bloggsian wrote: > > > Hi, > > > > We are looking at accelerating video operations using > > vaapi/intel-driver. When using Ivy bridge we believe that the GPU is > > (al

[Intel-gfx] IVB GPU turbo

Hi, We are looking at accelerating video operations using vaapi/intel-driver. When using Ivy bridge we believe that the GPU is (almost always) not turboing even when 100% busy doing vaapi video things (e.g. image scaling on EUs or bitstream decode). To determined this we use cat /sys/kernel/d