en:users:wi-fi-alliance-certification
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en:users:wi-fi-alliance-certification [2021/11/09 09:31] Reto Schneider [Driver Comparisation] |
en:users:wi-fi-alliance-certification [2021/11/10 00:43] (current) Reto Schneider [Register Comparison] |
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| | amd64, Edimax | DLink | Linux v5.12, 8192cu | 20 Mbits/s; 11% | 6m, direct line of sight | performance and retry are better than rtl8xxxu | https://mega.nz/folder/2Q1WBJqS#6dU1pQ9OXbveETqlfQcZ2w | | | amd64, Edimax | DLink | Linux v5.12, 8192cu | 20 Mbits/s; 11% | 6m, direct line of sight | performance and retry are better than rtl8xxxu | https://mega.nz/folder/2Q1WBJqS#6dU1pQ9OXbveETqlfQcZ2w | | ||
| - | === Observations === | + | ==== Observations ==== |
| | **Criterion** | **rtl8xxxu** | **rtl8192cu** | **8192cu** | **Comment** | | | **Criterion** | **rtl8xxxu** | **rtl8192cu** | **8192cu** | **Comment** | | ||
| | wlan.frag != 1 | rarely | often | never | Maybe a side-effect of failed transfers. Never sent by AP. | | | wlan.frag != 1 | rarely | often | never | Maybe a side-effect of failed transfers. Never sent by AP. | | ||
| Line 269: | Line 269: | ||
| * Issue: When using the rtl8xxxu driver, the communication has a much higher retransmission rate (20%) than with the other drivers (8192cu: < 5%, rtl8192cu: < 7.5%). Mainly, because the DUT fails to send ACKs in time, causing the AP to resend many frames. Issue can be seen best in the RX traces (iperf3 receiving data from the AP). | * Issue: When using the rtl8xxxu driver, the communication has a much higher retransmission rate (20%) than with the other drivers (8192cu: < 5%, rtl8192cu: < 7.5%). Mainly, because the DUT fails to send ACKs in time, causing the AP to resend many frames. Issue can be seen best in the RX traces (iperf3 receiving data from the AP). | ||
| * Traces: https://files.reto-schneider.ch/diesunddas/rtl8xxxu/2021-11-09-Testing/t420-2021-11-09T05:20:20+01:00/ | * Traces: https://files.reto-schneider.ch/diesunddas/rtl8xxxu/2021-11-09-Testing/t420-2021-11-09T05:20:20+01:00/ | ||
| + | * Please note: Only differentiating registers and their values are shown. Whenever additional information about bits/bitmasks is available, those are printed too. | ||
en/users/wi-fi-alliance-certification.1636450283.txt.gz ยท Last modified: 2021/11/09 09:31 by Reto Schneider
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