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coolpi4B 8822BU网卡 对比测试raspi4B 8821CU网卡

Pi 4B
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  • J
    jugg last edited by May 26, 2023, 3:00 AM

    我测试了8822BU的无线网卡
    对比了同样的网络环境下 树莓派4B的8821CU的无线网卡

    f78cc4af-5f5e-4428-9c88-46f872ed15cb-1685069910992_A27A2B1A-B2AB-410f-BCD3-2CC3E1E9CED9.png
    c9eb41a2-930f-4198-9847-9cb8c54a1d26-1685069998726_26ACC870-C55A-4a45-9329-7B72B9B6A0BE.png

    8822BU的ping
    de7ce0fc-7a9e-48ac-9321-2294d0ae5262-1685069177618_523F7360-9631-4cb8-92B1-877C52F4B050.png
    raspi4B的ping
    14546bdb-d485-473e-95d6-7ebbb10c8d21-1685069226576_A593165F-61F1-4c38-8C5E-C058A5C04222.png
    可以看出来8822BU的ping很不稳定
    raspi4B的8821CU比较稳定

    测网速
    f1409066-f493-4cc2-850a-b690b2c5240d-1685069374430_FFBF999F-6C0A-4850-B5F7-E8B142636BE6.png
    网速极不稳定

    966646a0-6025-43db-b3bb-48561a702831-image.png
    很稳定

    这个还能优化吗?或者试试别的网卡

    大法师 G 2 Replies Last reply May 26, 2023, 4:54 AM Reply Quote 0
    • 大法师
      大法师 @jugg last edited by May 26, 2023, 3:34 AM

      @jugg

      观察8822BU驱动是否有异常日志输出

      jack@cool-pi.com

      J 2 Replies Last reply May 26, 2023, 4:19 AM Reply Quote 0
      • J
        jugg @大法师 last edited by May 26, 2023, 4:18 AM

        @大法师
        5fc69c04-45bb-40ef-b9f7-ff52c26ac166-image.png

        1 Reply Last reply Reply Quote 0
        • J
          jugg @大法师 last edited by May 26, 2023, 4:19 AM

          @大法师
          .5d9727f6-fd61-4fe2-b729-1b011064eac3-image.png

          1 Reply Last reply Reply Quote 0
          • G
            george @jugg last edited by george May 26, 2023, 7:15 AM May 26, 2023, 4:54 AM

            @jugg
            1.可以把RTL8822BU接入树莓派测试。RTL8821CU的卡会很快支持,后续两个型号一致的情况对比,这个更客观一些。
            2.测试的时候建议关闭蓝牙功能

            J 1 Reply Last reply May 26, 2023, 7:47 AM Reply Quote 0
            • J
              jugg @george last edited by May 26, 2023, 7:47 AM

              @george

              1. 树莓派4B的8822BU 我用https://github.com/kimocoder/rtw88-usb/tree/kernel-5.4
                但是编译出来的没法安装 所以没有试
              2. 已经关掉了蓝牙
              3. 传了一个8M的码流(电脑端接收板子wifi发出的数据) ping是这样
                bdb81f27-941a-4ae4-a919-e1398cdeaa9f-image.png
                不传就是这样
                172d43c2-a89b-4bd7-80cd-c6693f47cb60-image.png
              1 Reply Last reply Reply Quote 0
              • J
                jugg last edited by May 26, 2023, 9:14 AM

                我发现ping不正常的 dmesg 都会一直刷这个
                eadffd61-dae7-458a-a82c-3bd6d5259ca5-image.png

                1 Reply Last reply Reply Quote 0
                • J
                  jugg last edited by May 26, 2023, 9:26 AM

                  我好像找到原因了
                  是桌面电源管理的问题
                  screen blank 关掉就行了

                  G 1 Reply Last reply May 26, 2023, 9:38 AM Reply Quote 0
                  • G
                    george @jugg last edited by May 26, 2023, 9:38 AM

                    @jugg 也可以尝试在驱动的makefile里边禁用掉如下配置:

                    CONFIG_POWER_SAVING = n
                    
                    J 1 Reply Last reply May 26, 2023, 9:59 AM Reply Quote 0
                    • J
                      jugg @george last edited by May 26, 2023, 9:59 AM

                      @george

                      1. 驱动里面可以这样改
                      2. 系统里面怎么改?默认就关闭电源管理
                      1 Reply Last reply Reply Quote 0
                      • Referenced by  C carloshenrique Jul 5, 2023, 3:13 AM
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