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    AGX Xavier使用385问题

    Scheduled Pinned Locked Moved Jetson App Software
    12 Posts 2 Posters 5.3k Views 1 Watching
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    • B Offline
      bouncy @veye_xumm
      last edited by

      @veye_xumm 感谢您的回答,我还想问一下,我应该如何替换extlinux.conf使得其生效,谢谢

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      • veye_xummV Offline
        veye_xumm @bouncy
        last edited by

        @bouncy
        agx xavier本身并没有tf卡启动,我觉得extlinux.conf应该是生效的。
        你把这个文件的内容贴上来我看一下可否?

        Questions will be answered as soon as possible, please be patient.
        如果你使用中文,请直接用中文提问。
        May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

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        • B Offline
          bouncy @veye_xumm
          last edited by

          @veye_xumm 好的,内容如下,以附件的形式发送。
          extlinux.txt

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          • veye_xummV Offline
            veye_xumm @bouncy
            last edited by

            @bouncy 你操作应该是没问题的。不知是否方便整个重烧之后再搞一遍? 说实话几次客户出现过类似问题,也都是客户自己查jetson的l4t资料解决的。

            Questions will be answered as soon as possible, please be patient.
            如果你使用中文,请直接用中文提问。
            May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

            B 1 Reply Last reply Reply Quote 0
            • B Offline
              bouncy @veye_xumm
              last edited by

              @veye_xumm 感谢您的回复,我这几天重新烧录了几次,使发现只能用PC host的方法改变内核文件,但是在测试的时候,发现了大约每一秒都会出现一次卡顿的现象,使用Python打印了帧率,发现在卡顿的时候,读取图像的时间会变大到50ms左右,请问这个问题可能是由什么引起的。

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              • veye_xummV Offline
                veye_xumm @bouncy
                last edited by

                @bouncy
                感觉像是你的数据处理速度迟滞了整个数据流。
                可以用v4l2-ctl来获取一下图像试试。
                http://wiki.veye.cc/index.php/VEYE_CS_Camera_for_Jetson_TX2/zh#.E5.AE.89.E8.A3.85v4l2-utils
                参考帧率统计这一节。注意使用合适的分辨率尺寸参数。

                Questions will be answered as soon as possible, please be patient.
                如果你使用中文,请直接用中文提问。
                May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                B 1 Reply Last reply Reply Quote 0
                • B Offline
                  bouncy @veye_xumm
                  last edited by

                  @veye_xumm 很感谢您的回答,我看那个指令是用来获取图片的,那么我应该如何做才能得到帧率,是不是需要写一个脚本之类的东西。

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                  • veye_xummV Offline
                    veye_xumm @bouncy
                    last edited by

                    @bouncy 这个命令直接就会统计帧率。你运行一下就知道了

                    Questions will be answered as soon as possible, please be patient.
                    如果你使用中文,请直接用中文提问。
                    May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

                    B 1 Reply Last reply Reply Quote 0
                    • B Offline
                      bouncy @veye_xumm
                      last edited by

                      @veye_xumm 很感谢您的回复,我使用了如下的命令进行测试

                      v4l2-ctl --device /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat=UYVY--stream-mmap --stream-count=-1 --stream-to=test
                      

                      打印出来的帧率从30.26缓慢下降到30.00
                      但是使用以下命令测试

                      gst-launch-1.0 nvv4l2camerasrc device=/dev/video0 ! "video/x-raw(memory:NVMM),format=(string)UYVY, width=(int)1920, height=(int)1080" ! nvvidconv ! "video/x-raw(memory:NVMM),format=(string)I420" ! nv3dsink sync=false
                      

                      画面依然出现卡顿现象,请问这个原因可能是由什么引起的。

                      veye_xummV 1 Reply Last reply Reply Quote 0
                      • veye_xummV Offline
                        veye_xumm @bouncy
                        last edited by

                        @bouncy

                        打印出来的帧率从30.26缓慢下降到30.00

                        这个是正常的。因为这个程序统计帧率是每秒钟统计一次,第一次统计会有1帧的误差,后面会逐渐逼近到最准确的数。

                        画面依然出现卡顿现象,请问这个原因可能是由什么引起的。

                        这个比较奇怪,在我这运行完全没问题。这里面用到的nvidconv是使用了硬件资源的。而且agx xavier性能干这点活,完全没有问题。
                        不知你的机器有没有同时干其他工作? 可以用jtop分析一下。

                        Questions will be answered as soon as possible, please be patient.
                        如果你使用中文,请直接用中文提问。
                        May the force be with YOU. (This is the translation of the mysterious Chinese symbol above.)

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