Re: [lwip-users] lwIP performance with FreeRTOS

[Simon Goldschmidt]

Chris Ponder <address@hidden> wrote:

> Should I be looking more at lwIP (adding LWIP_TCPIP_CORE_LOCKING made quite 
> an improvement) or is this a FreeRTOS thing?

That's a good question, I'm afraid I can't answer it. I haven't used the 
netconn API when performance was needed, and I haven't ever benchmarked it.

Is the rest of your application the same? In other words, are you using the 
same pbuf/netbuf type (allocated and creating the data into it vs. sending by 
reference)? Are there many thread switches  from/to your application thread? 
Keep in mind that response packets are still passed into the tcpip_thread, so 
there may still be many (potentially slow) thread changes if you are using a 
ping-pong protocol where every packet sent results in a packet received (no 
matter how big that's, of course).

As to FreeRTOS, I can't comment on that, I haven't really used it, yet.

Simon