topic Re: GPU performance issue in Linux 4.9.11 kernel on iMX6Q in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731416#M113795 <HTML><HEAD></HEAD><BODY><P>Hi Bala,</P><P></P><P>Sorry, But I could not reproduced it, For me it appear that your QT samples are running on CPU.</P></BODY></HTML> Wed, 14 Mar 2018 16:28:38 GMT Bio_TICFSL 2018-03-14T16:28:38Z GPU performance issue in Linux 4.9.11 kernel on iMX6Q https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731414#M113793 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>I am using Linux 4.9.11 with Yocto Morty build.</P><P></P><P>I am facing GPU performance issue in L4.9.11 kernel, when I'm running&nbsp;hellogles3 or any application from Qt5 examples the CPU loads nearly 30% but in L4.1.15 kernel with Yocto krogoth build CPU loads less than 2% only.</P><P></P><P>From the CPU utilization, we are considering L4.9.11 is using software decoder instead of&nbsp;hardware decoder.<BR />Due to more CPU utilization in L4.9.11 Kernel, the device is increasing&nbsp;temperature rapidly.</P><P></P><P>Due to this QT examples runs slowly when compared to L4.1.15.</P><P></P><P><STRONG>GPU Performance details:</STRONG></P><P></P><TABLE class="j-table jiveBorder" style="border: 1px solid #c6c6c6;" width="100%"><THEAD><TR style="background-color: #efefef; height: 23px;"><TH style="width: 26%; text-align: center; height: 23px;"></TH><TH style="width: 37.0527%; text-align: center; height: 23px;">L4.1.15 with Krogoth</TH><TH style="width: 29.9473%; text-align: center; height: 23px;">L4.9.11 with Morty</TH></TR></THEAD><TBODY><TR style="height: 23px;"><TD style="width: 26%; text-align: center; height: 23px;"><STRONG>CPU</STRONG></TD><TD style="width: 37.0527%; text-align: center; height: 23px;">2%</TD><TD style="width: 29.9473%; text-align: center; height: 23px;">30%</TD></TR><TR style="height: 74px;"><TD style="width: 26%; text-align: center; height: 74px;"><STRONG>MMDC GPU3D</STRONG></TD><TD style="width: 37.0527%; text-align: center; height: 74px;">Utilization: 7%<BR />Overall Bus Load: 35%<BR />Bytes Access: 62</TD><TD style="width: 29.9473%; text-align: center; height: 74px;">Utilization: 6%<BR />Overall Bus Load: 34%<BR />Bytes Access: 60</TD></TR><TR style="height: 74px;"><TD style="width: 26%; text-align: center; height: 74px;"><STRONG>MMDC GPU2D</STRONG></TD><TD style="width: 37.0527%; text-align: center; height: 74px;">Utilization: 1%<BR />Overall Bus Load: 35%<BR />Bytes Access: 63</TD><TD style="width: 29.9473%; text-align: center; height: 74px;">Utilization: 1%<BR />Overall Bus Load: 34%<BR />Bytes Access: 63</TD></TR><TR style="height: 74px;"><TD style="width: 26%; text-align: center; height: 74px;"><STRONG>MMDC SUM</STRONG></TD><TD style="width: 37.0527%; text-align: center; height: 74px;">Utilization: 25%<BR />Overall Bus Load: 36%<BR />Bytes Access: 63</TD><TD style="width: 29.9473%; text-align: center; height: 74px;">Utilization: 25%<BR />Overall Bus Load: 35%<BR />Bytes Access: 63</TD></TR></TBODY></TABLE><P></P><P>How to fix this issue or any patches available to solve the issue?</P><P></P><P>Hoping for a better guidance.</P><P><BR />Best regards,<BR />Bala</P></BODY></HTML> Tue, 06 Mar 2018 10:32:35 GMT https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731414#M113793 balasubramaniyam 2018-03-06T10:32:35Z Re: GPU performance issue in Linux 4.9.11 kernel on iMX6Q https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731415#M113794 <HTML><HEAD></HEAD><BODY><P>Is it a known issue?</P><P></P><P>Best regards,<BR />Bala</P></BODY></HTML> Tue, 13 Mar 2018 12:32:48 GMT https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731415#M113794 balasubramaniyam 2018-03-13T12:32:48Z Re: GPU performance issue in Linux 4.9.11 kernel on iMX6Q https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731416#M113795 <HTML><HEAD></HEAD><BODY><P>Hi Bala,</P><P></P><P>Sorry, But I could not reproduced it, For me it appear that your QT samples are running on CPU.</P></BODY></HTML> Wed, 14 Mar 2018 16:28:38 GMT https://community.nxp.com/t5/i-MX-Processors/GPU-performance-issue-in-Linux-4-9-11-kernel-on-iMX6Q/m-p/731416#M113795 Bio_TICFSL 2018-03-14T16:28:38Z