On 02/17/2014 01:57 PM, Christian Göbeler wrote:
Hello everyone,
I'm trying to get xenomai working on my laptop:
- Intel i7-2630QM
- HM67 Chipset
- Ubuntu 12.04
- NVidia GF 540 and Intel onboard graphics chip
- kernel 3.8.13 x86_64
- xenomai 2.6.3
but when I run the latency tests I keep getting high worst case latencies.
When generating load by manually calling dd or using the "dohell" script
I get
latencies >290. When I start X while running the latency test I get
latencies >700
.. and finally when I run glxgears on the nvidia card I get latencies of
up to >9000.
Eventhough these do only occur right when I start glxgears.
I do not intend to measure latencies while doing 3d animation but I
think the
latencies shown indicate some kind of configuration mistake which I'd
like to
avoid.
If you plan to use the i915 drm driver with an Intel integrated graphic
chip, make sure to run ipipe-core-3.8.13-x86-4, anything earlier (i.e.
3.8.13-x86-3 and below) shows high latencies.
http://download.gna.org/adeos/patches/v3.x/x86/ipipe-core-3.8.13-x86-4.patch
--
Philippe.
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