Any chance this gets fixed by the release?
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Intel 2.21.13 Driver Fixes Performance Regressions
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Originally posted by curaga View PostCome to the dark side and switch to radeon No tearing for something like seven years now. Not using a compositor either (come on Intel, we exist, implement support for that already!).All opinions are my own not those of my employer if you know who they are.
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Originally posted by curaga View PostCome to the dark side and switch to radeon No tearing for something like seven years now. Not using a compositor either (come on Intel, we exist, implement support for that already!).
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Originally posted by ickle View PostI'm working on it! Option TearFree does it, just not elegantly yet, so still work-in-progress.
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Originally posted by mendieta View PostIckle, in case you are still reading. What's the status of GPU overclocking? I can overclock my haswell (with a pretty current software stack) and see gains in glxgears proportional to the gain (1200Mhz ->1350Mhz). However, less trivial tests such as glmark2 actually work much slower (almost half the overall framerate) . Thanks!
We know that mesa often struggles to keep the GPU busy enough to warrant upclocking, but given your symptoms that doesn't seem to be the case. Rather I think it will be related to throttling, even possibly diverting power from the CPUs and wasting it on the GPU.
If we can figure out exactly what is going on, we expect to have some easy performance wins in the future. (I wish!)
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Originally posted by ickle View PostGPU frequency scaling is a black art - the hardware is mostly a black box to us, we have a number of thresholds to program and then respond to the GPU's request for more or less power. What happens next is more or less up to the power control unit (which is getting more intelligent over time) and monitors thermals and power levels over the chip - and will throttle if need be.
We know that mesa often struggles to keep the GPU busy enough to warrant upclocking, but given your symptoms that doesn't seem to be the case. Rather I think it will be related to throttling, even possibly diverting power from the CPUs and wasting it on the GPU.
If we can figure out exactly what is going on, we expect to have some easy performance wins in the future. (I wish!)
Anyways, cheers for all the great work. My i4670k is working great (incredibly fast both for GPU and CPU) with Mesa 9.2git and kernel 3.10.3!
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