[GitHub] [incubator-nuttx] a-lunev commented on pull request #5112: bcm43xxx: supported ARM CR4 core and bcm43455 chip in particular

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a-lunev commented on pull request #5112:
URL: https://github.com/apache/incubator-nuttx/pull/5112#issuecomment-1002637498


   > @a-lunev could you share some performance and stability data about bcm43xxx? We are very interested in the quality of this driver.
   
   I have tested the performance neither based on a raw network traffic nor based on UDP.
   Concerning TCP network traffic the peak payload throughput I observed is about 22-23 Mbit/s for BCM43362 chip, about 25 Mbit/s for BCM43438 chip, and about 40 Mbit/s for BCM43455 chip. The performance depends on different factors such as the performance of host CPU, radio-frequency interference etc.
   The driver stability looks not bad if the network traffic is not high (less than the peak). If the network traffic is about to the peak, the driver (or chip) sometimes hangs up for some reason. In my previous PRs I fixed some stability issues, however as I can see there are still some hidden ones.


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