i.MX6Q: Video freeze after running for long time "VPU blocking: timeout."

[Tarek]

Hi,

I'm using Saberlite connected to HDMI 10820p monitor. In my test case I'm playing 12 streams with different aspect rations. All the streams are scaled down to fit on the same screen.

Normally I get the following message when I start the streams:

........

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC12's EBA0 is not 8-byte aligned

imx-ipuv3 imx-ipuv3.0: IDMAC11's EBA0 is not 8-byte aligned

If I leave the system running for enough time "few hours" the video freezes and I get this error message:

imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00080000

VPU blocking: timeout.

VPU blocking: timeout.

VPU blocking: timeout.

VPU blocking: timeout.

VPU blocking: timeout.

Can you please let me know what does this error indicates and how to solve the problem?

Thanks,

Tarek

[宗標廖]

Hello,Tarek El-Sherbiny

I saw your workground for "imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00080000" as below:

>It turned out that vpudec low-latency property was causing the problem.

>Once I disabled this option all the video streams runs forever.

Could you tell me where to disable  low-latency property?

Thank you!

ZongbiaoLiao

[Tarek · Accepted solution]

It turned out that vpudec low-latency property was causing the problem.

Once I disabled this option all the video streams runs forever.

[mghasan]

Hi Tarek,

Where to disable this low-latency property? We are also getting same issue when we try to play multiple streams using IMX6 board based on Android 4.2.2.

[宗標廖]

Hello Hasan

Did you find where to disable this low-latency property?

Thank you!

ZongbiaoLiao

[Tarek]

Same problem with different error message:

Error: Internal data flow error.

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

[WARN] VPU mutex couldn't be locked before timeout expired or get lock failure

Any suggestions?

[ChucoChe]

Hi,

imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00080000 is a bandwidth issue.

H264 @ 1080p 30fps is about [250 to 330] Mbytes/sec and you can more or less make a linear relation for other resolutions or formats.

You can also check the bandwidth consumed with the attached binary.

Michel

[mikesloman]

Hi Guillermo,

We are trying to profile our IMX6 DDR performance. Can you point me to, or attach, the source code for the mmdc_prof tool? I cant seem to find it anywhere else. Sadly the bin you built is not compatible with our linux version (the software gurus say something about differing ABI calling format or something:-)

Env: imx6 Solo - linux  3.0.68-smx6_03

Thanks.

[LeonardoSandova]

Mike

If your are familiar with Yocto, the tool is compiled and installed on the target filesystem. Anyway, it should be on the SRC_URI defined here

meta-fsl-bsp-release.git - Freescale i.MX Yocto BSP Release Layer

[Tarek]

Hi Michel,

The maximum memory bandwidth is about 1 GB/s and utilization = 16 %

I should be able to get more out of it. Is there anyway to improve it?

[ChucoChe]

Hi,

Could you describe the pipeline and files?

Also, have  you tried a 1080p at 60fps file? That may point us to some extra overhead.

Michel

[Tarek]

Hi Michel,

The  pipeline is as follow:

                                           -> vpudec

appsrc -> output-selector                      ->input-selector ->mfw_isink

                                           ->jpecgdec

     /* appsrc properties */

     gst_app_src_set_stream_type (ctx->appsrc,GST_APP_STREAM_TYPE_STREAM);

     g_object_set(ctx->appsrc,"stream-type",0, NULL);

     g_object_set(ctx->appsrc,"is-live",TRUE, NULL);

     g_object_set(ctx->appsrc,"block",TRUE, NULL);

      gst_app_src_set_max_bytes(ctx->appsrc, 1*1024*1024);

     /* vpu properties */

     g_object_set(ctx->vpudec,"low-latency",TRUE, NULL);

     g_object_set(ctx->vpudec,"frame-plus",1, NULL);

     g_object_set(ctx->vpudec,"profile",TRUE, NULL);

     /* isink properties */

     g_object_set(ctx->isink,"sync",FALSE, NULL);       

Obviously I'm using the vpudec branch all the time.

I couldn't set the camera to stream 60 fps. Sorry about that.

Thanks

[ChucoChe]

Hi,

So, how are you getting the input from the camera? How many CSI channels are you using?

Do you have an encoding pipeline for the camera input?

Could you use your captured video or another video and set the display frame rate to 60 for H264 decoding for testing?

Michel

[Tarek]

Hi Michel,

I have recorded H264 raw stream and used the application attached to play it back in 60 pps. The same problem occurs.

Do you have any suggestions?

Thanks,

Tarek

[Tarek]

The camera is a different platform. It's not Freescale nor Linux.

I will record few minutes and try to play it back in 60 frames per seconds. Does it have to be H264 or mpeg4 will do?

[ChucoChe]

H264 would be better. Could you describe your setup? Software and Hardware.

Michel

[Tarek]

Hardware: Nitrogen Board i.MX6Q rev. 1.2 connected to HDMI 1080p display.

Software: LTIB BSP 4.0.0

Gstreamer is used to utilize the HW acceleration for decoding and display. So frames are being fed to the decoder with a configurable rate in infinite loop . One frame is sent at a time.

The pipeline as follow:

                                                   -> vpudec    

apsrc -> queue2 -> output-selector                  ->input-selector -> queue2 -> mfw_isink

                                                   ->jpegdec

Please check the attached file as an example for the source code.

[karina_valencia]

ChucoChe please  continue with the follow up.

[karina_valencia]

No update from customer

[Tarek]

I'm on holiday and will try your suggestion once I get back to office

Thanks

On 9 Aug 2013 15:56, "Karina Valencia Aguilar" <

[ChucoChe]

I just thought we haven't consider the VPU capabilities. According to reference manual VPU section:

68.4 Functional Description

VPU is a high-performance multi-standard video processing block that supports up to full

HD 1920 x 1088 at 30 fps plus D1 at 30 fps decoding and 1920 x 1088 at 30 fps

encoding.

Maybe this is the cause for the issue. I have sent that info to our R&D team so they can comment on that.

Michel