[lwip-users] lwip performance goes down if running with FreeRTOS

[vincent cui]

Hi:

 

I found a odd strange in Cortex M3, running LWIP1.4.0 + FreeRTOS.

I write a TCP server to accept large file, the code works well if running in LWIP standalone. The performance is high and stable.

But when I create the task in FreeRTOS, the whole LWIP performance goes to down after the task accept file for a while

 

It seems that switch task in FreeRTOS cause it down, but I don’t know how to bypass. I even try to “define LWIP_TCP_CORE_LOCKING’

To disable TCP task switch, but still got same result .

 

Anyone can give help ?

 

 

vincent