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Published 20 hours ago • verified publisher icon RinCat

Slower Speeds with CONCURRENT_MODE?

Open chrisvollorenew opened this issue 2 years ago • 3 comments

Hello, please forgive if this question is from ignorance:

I tested TX speeds of the driver on RTL8822BU in USB2.0 mode both with and without concurrent mode enabled (USER_EXTRA_CFLAGS='-DCONFIG_CONCURRENT_MODE).

The results were about 12MB/s without concurrent mode and 6MB/s with concurrent mode given my settings in HOSTAPD.

Is this normal, or should we theoretically be able to achieve the same speeds with concurrent mode?

chrisvollorenew avatar Nov 27 '22 18:11 chrisvollorenew

In theory you should able achieve same speed (that shared in 2 links), but it depends on many factors.

RinCat avatar Nov 27 '22 22:11 RinCat

@RinCat what could these factors be? ... do you think it would help if I keep one of the VIF DOWN while the other is in HOST mode?

chrisvollorenew avatar Nov 30 '22 14:11 chrisvollorenew

I don't know how CONCURRENT_MODE implemented. They share antennas so they can't be used at the same time, I don't know if they are divided according to demand or completely divided by time. But if you keep one down it should same as just one IF?

RinCat avatar Nov 30 '22 17:11 RinCat