[Libva] vaPutSurface threading issue

[Sambhav]

Hi,

Could someone please provide the link for downloading PSB drivers for US15W
and instructions for installation.

Regards,
Sambhav
On Tue, Feb 23, 2010 at 7:49 PM, Adam Strzelecki <ono at java.pl> wrote:

> Sambhav wrote:
> > With X-Server 1.6.X the application crashes and exits with following
> error
> > XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server
> ":0.0"
> >       after 54 requests (53 known processed) with 0 events remaining.
>
> Have a look at my report at Intel's EDC forum:
>
> http://community.edc.intel.com/t5/Software-Tools-Discussions/IEGD-10-3-VA-is-NOT-thread-safe-crashing-on-iegd-drv-video-so/m-p/2307#M229
>
> This isn't IMHO related to Xorg but to IEGD drivers themselves. With old
> PSB drivers from 2008 everything works fine when using multithreading.
> I'd be glad it you can post your problem there in the thread above on Intel
> forum too. Maybe this will encourage Intel's engineers to do something about
> that issue.
>
> Gwenole wrote:
> > Are you locking your display? XInitThreads() + X locks or pthread locks.
>
> I tried myself to use XInitThreads to avoid crashes. And indeed it helps
> with IEGD, but it really produces crappy performance, like 1.5FPS instead
> smooth video on old non-locked PSB drivers from 2008. Moreover since VA API
> some functions are synchronous (Render functions) the only way to play
> multiple streams (and fully use the hwcodec potential) is to use
> multithreading, but when using XInitThreads actually we get kind of
> sequential access via VA API (since it uses interprocess XCB to access
> driver), and as a result I get 1.5FPS when playing 4-6 streams, and 6% CPU
> usage due that locking.
>
> FYI with old PSB 2008 drivers (regardless of Xorg version) I get smooth 4-6
> PAL streams playback with absolutely NO XInitThreads locking or whatever
> locking, also my CPU usage is ~60%-70%.
>
> Aside of that I think VA API is not strictly related to X11 lib, and it
> should be driver responsibility to provide valid locking around internal X11
> communication and thread-safe functions. XInitThreads is suppose to protect
> X11 API calls from the user application, but VA API calls should IMHO work
> fine regardless if I use XInitThreads or not.
>
> So it is definitely something wrong with new IEGD Gallium based drivers.
>
> Regards,
> --
> Adam
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