Hi Simon, okay,,, maybe i will try your patch for lwIP 1.3.0 first,,,
thanks -- Agfa --- On Thu, 8/27/09, Simon Kallweit <[email protected]> wrote: From: Simon Kallweit <[email protected]> Subject: Re: [ECOS] ecos + lwip To: "agfa prayoga s" <[email protected]> Cc: "Sergei Gavrikov" <[email protected]>, "Mandeep Sandhu" <[email protected]>, "ecos-discuss" <[email protected]> Date: Thursday, August 27, 2009, 7:16 AM agfa prayoga s wrote: > Hi all,,, > > did lwIP 1.3.0 port that Simon's patched for eCos 3.0 has improvement in > memory footprint? > > i am trying to run httpd example under lwip package on AT91SAM7X-EK board > filled with AT91SAM7X256. that microcontroller only have 256KB ROM and > 64KB RAM. > > i have compiled the example successfully only with PBUF value 10, disable > DHCP, > SLIP, PPP, raw socket support, IP forwarding. > > using arm-eabi-size, httpd binary has size: > .text : 82740 > .data: 5428 > .bss: 50792 > > notice that the sum of .data and .bss is almost 56KB, near 64KB. > > if i increase the PBUF value over 10(default value is 60), compilation > process will failed with error that > is no longer room in .bss because the limitation in 64KB. > > maybe this is out of topic, but i appreciate your assistance... Well that's hard to say. You would need to ask that question on the lwip list. I don't know if there are major differences in memory consumption between lwip 1.1.0 and 1.3.1. One advantage of my port is that it can be run in a completely polled mode (I call it simple mode), so you can run all your network code in a single thread, instead of multiple threads (at least 3). The old port did not directly offer that option. This can spare you quite a bit of memory (stacks). Notice that when using the simple mode, you will have to use the raw APIs (see httpd_simple example) and cannot use the netconn and socket APIs. In my project, I use the polled mode for the exact same reason (memory) with good results. Simon -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss
