High CPU usage in linux for MPEG4 and H264 encoders

[Venkat_R_1]

Hello,

We see high cpu usage for MPEG4 and H264 encoding in Linux when compared to Windows. We are using IPP 2015.6.233 with 8.0 UMC samples.

System: Pentium CPU G4400 @3.30GHz x 2 with Intel HD Graphics 510. 

Ran umc_video_enc_con (with usleep for 142 milliseconds to process 7 FPS) on both Windows and Linux with input as YUY2 file.

Single Thread

Linux:

1% cpu for MPEG4, Encoding: 2.18 (192 FPS), Conversion 0.08

3% cpu for H264, Encoding: 14,03 (30 FPS), Conversion 0.10

Windows:

0% cpu for MPEG4, Encoding: 0.82 (513 FPS), Conversion 0.03

0-1% cpu for H264, Encoding: 4.75 (87 FPS), Conversion 0.03

24 Threads (Modified umc_video_enc_con to run 24 threads, nothing is shared between threads)

18% cpu for MPEG4, Encoding: 2.98 (150 FPS), Conversion 0.10

60% cpu for H264, Encoding: 20.03 (21 FPS), Conversion 0.12

Windows:

0% cpu for MPEG4, Encoding: 1.40 (301 FPS), Conversion 0.10

35% cpu for H264, Encoding: 6.85 (65 FPS), Conversion 0.06

OpenMP is not enabled on both Windows and Linux. Tried with both Dynamic and Static libraries. Setting KMP_BLOCKTIME=0, KMP_AFFINITY=compact and OMP threads to 1 did not make any difference. I was not setting those on Windows anyway.

Spent a lot of time to get to the bottom of this. No avail. Any assistance is very very much appreciated. Thank you. 

Regards,

Venkat.

[Venkat_R_1]

Video, Par and umc_video_enc_con.cpp files are attached, if you would like to test it. Please let me know if you have any questions. Thank you.

[Venkat_R_1]

Any suggestions, please.

We have a valid license. Is there any IPP support number which I can call. This is a big production issue for us. Thanks.

BTW, Linux Ubuntu flavor 16.4 and Windows 7.

[Shaojuan_Z_Intel]

Hi Venkat,

Video codecs are no longer supported in Intel IPP now, they were moved to Intel MediaSDK product. For video related question, you may ask in mediaSDK forum https://software.intel.com/en-us/forums/intel-media-sdk. Or, if you have valid commercial license, we encourage you submit question through Intel Online Service Center https://supporttickets.intel.com/servicecenter?lang=en-US for quicker response. Thanks!