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

[vincent cui]

Hi :

 

When lwIP performance goes to down, I capture the TCP packet as attached files.

I also extend PBUF_POOL_BUFSIZE to enough size. It seems no use.

Anyone can give any help ?

 

Vincent

 

From: lwip-users-bounces+address@hidden [mailto:lwip-users-bounces+address@hidden On Behalf Of vincent cui
Sent: 2012年5月10日 21:01
To: Mailing list for lwIP users
Subject: [lwip-users] lwip performance goes down if running with FreeRTOS

 

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

 

 

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