Re: [lwip-users] Max throughput and LWIP

[Piero 74]

Hi.

I'm working on optimize work in emac driver for lwip 1.3.0. on lpc2368, with the aim to maximize performance.

Just some questions:
1. do you use freertos? can you send me your sys_arch.c file? i think it acts an important rule from performance point of view
2. did you write driver using emac irq? and irq function uses semaphore or mailbox for lwip task ?
3. can you send me your lwipopt.h? i want discuss about it!

2008/2/2, Josh Rothstein <address@hidden>:

I know this is a common topic on the mailing list, but I wanted to hear about people's results trying to maximize throughput with lwIP.

 

I am current running lwIP 1.2 on an Atmel AVR32 UC3 at 66MHz.  Using the sequential API with the best lwiopt.h tweaks I can come up with, I am geting about 350kbps (2.8Mbps). I am not sure how the processor would fair running NO_SYS using the raw api, but at the moment that is not really an option.  Would that be considered good throughput or is there any simple tweaks to reach anything closer to wire-speed (10Mbps or even better 100Mbps)?

 

I have read in the mailing list where people were getting approximately 8 – 12Mbps. I am unsure if that was with the standalone raw api, faster processors, or my settings are just poor.

 

 

Any suggestions would be appreciated.

 

Best,

 

Josh Rothstein

Embedded Systems Engineer

DCX-CHOL Enterprises, Inc.

12831 South Figueroa Street

Los Angeles, CA 90061-1157

310.516.1692x134

 

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