oh and Simon, another question. I haven't seen anything about this in your wiki, but are PBUF_POOL_SIZE and PBUF_POOL_BUFSIZE important too? I'm trying to put everything as high as possible, but I have linking problems because I need to much memory. Could you give me some suggestions on the parameters to choose if I want to send packets of 8k size, or more, something like this...
#define MEM_SIZE 10 * 1024 #define MEMP_NUM_PBUF 16 #define PBUF_POOL_SIZE 10 #define PBUF_POOL_BUFSIZE LWIP_MEM_ALIGN_SIZE(TCP_MSS+40+PBUF_LINK_HLEN) #define TCP_MSS 9216 #define TCP_WND (TCP_MSS * 2) #define TCP_SND_BUF TCP_WND #define TCP_SND_QUEUELEN 6 * TCP_SND_BUF/TCP_MSS Best regards, Dany On Tue, Mar 30, 2010 at 12:01 PM, Dany Thiffeault <[email protected]>wrote: > Ok, I'm now back up-and-running. With Studio 2.5, Framework 1.7 and LWIP > 1.3.2. My streaming is working great at the moment. I'm limited to > 2.1Mbits/s of throughput though, so I started reading your Wiki page Simon > and trying things. > > I have one question: > - How do I know if the checksum can be calculated by the hardware? I'm > using a board I made but based on the Atmel EVK1100. > > Thanks!!!! > Dany > > > On Tue, Mar 23, 2010 at 11:50 AM, Martin Persich <[email protected]>wrote: > >> Hi Dany, >> I'm workin with AVR32 too and I have similar problem in this momen (I have >> LwIP 1.3.2 + some CVS changes and Atmel framework 1.7 of course). My app is >> hanging with huge ethernet load (traffic approx 20 GB / day) sometime - once >> per day, but most often once per week, ... terrible situation. I am >> suspecting Atmel "macb.c" driver in this moment, I am not sure if all code >> in "macb.c" (function lMACBSend) is thread and IRQ safety. But it is only my >> last idea. I changed ETHERNET_CONF_NB_TX_BUFFERS from 10 to 24 two days >> ago ... >> I haven't any problem solution in this moment. >> Martin Persich >> >> >> ----- Original Message ----- >> *From:* Dany Thiffeault <[email protected]> >> *To:* Mailing list for lwIP users <[email protected]> >> *Sent:* Monday, March 22, 2010 10:13 PM >> *Subject:* Re: [lwip-users] Help in getting maximum throughput with LWIP. >> >> wow, great thanks. I'll make some tests tomorrow. >> >> Indeed, I forgot to mention. I'm using TCP with the netconn API. While >> reading through the multiple posts I missed the past few months, I found out >> that 1.3.2 is out and Atmel framework 1.7 too. I'll upgrade everything >> tomorow. >> >> But in the meantime, I'm experiencing problems like I wrote. I don't know >> why my app is hanging in the tcp_in.c file. If somebody knows what's going >> on on that line, let me know. >> >> >> >> On Mon, Mar 22, 2010 at 5:05 PM, [email protected] <[email protected]>wrote: >> >>> I just took the time to write something about performance/throughput on >>> the wiki: >>> - http://lwip.wikia.com/wiki/Maximizing_throughput >>> - http://lwip.wikia.com/wiki/Tuning_TCP >>> >>> However, you didn't tell us if you are using TCP or UDP? Also, I don't >>> know what ETHERNET_CONF_NB_TX_BUFFERS is, so I'm guessing it's related to >>> the lwIP port you are using... Maybe someone else here has experience with >>> the platform you are using, but I don't :-( >>> >>> Simon >>> >>> >>> Dany Thiffeault wrote: >>> >>> Hi, >>> >>> I'm currently coding an application on a AVR32 UC3 board. The board is >>> actually an acquisition platform that's using Ethernet (lwip 1.3.1 >>> currently). I'm using FreeRTOS and the Atmel framework 1.4. >>> >>> My connection is working great with my Windows application. There are two >>> modes to my AVR32 application: >>> >>> 1- Idle mode where there are only keep-alive packets every 1 second, of >>> 8bytes each. >>> 2- Streaming mode, where the AVR32 (so LWIP) send data as fast as >>> possible to the Win application. >>> >>> What is important to me is to get maximum speed in Streaming mode, where >>> packets are Header(24bytes) + Data(?Bytes). I'm currently playing with the >>> data size to see what I can achieve. Ideally, the maximum size I would like >>> is about 35KBytes. Right now, I'm not sure what's going on, but the Ethernet >>> seems to hang after a few seconds of streaming. Haven't found the problem so >>> far. >>> >>> So, what are the important parameters for maximum thoughput in the >>> lwipopts.h file dans other #defines like ETHERNET_CONF_NB_TX_BUFFERS, etc. >>> I'm kind of lost in all those parameters. >>> >>> Thanks a lot!! >>> Dany >>> >>> >>> _______________________________________________ >>> lwip-users mailing >>> [email protected]http://lists.nongnu.org/mailman/listinfo/lwip-users >>> >>> >>> >>> _______________________________________________ >>> lwip-users mailing list >>> [email protected] >>> http://lists.nongnu.org/mailman/listinfo/lwip-users >>> >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> http://lists.nongnu.org/mailman/listinfo/lwip-users >> > >
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