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IP stacks for eCos
- From: Tom Malcolmson <Tom at Malcolmson dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Thu, 21 Sep 2006 16:11:06 -0400
- Subject: [ECOS] IP stacks for eCos
I'd like to switch from Nucleus to eCos, but I have some questions about
IP stacks.
Somewhere it says that the eCos IP stack supports: IPv6, DHCP, SNMP
agent, HTTPD, TFTP. Well, that sounds great, but there appear to be 2
IP stacks for eCos: FreeBSD port and the OpenBSD port. Do they both
support these features? Are both in 'good shape'?
I desire the listed features, but I need to keep things small (my system
is 1MB flash and 4MB RAM). Which of the two stacks are smaller?
I see that people are also using the uIP and the lwIP stacks with eCos.
Those are much smaller but they appear very minimal in their features.
Searching thru this mailing list I found a memory comparison that I've
pasted below. It's a little scary to see how much space the FreeBSD
stack takes.
Thanks for any suggestions,
Tom.
* bare eCos:
$ arm-elf-size twothreads
text data bss dec hex filename
45992 800 25784 72576 11b80 twothreads
* eCos with NET LWIP :
text data bss dec hex filename
48956 1504 26372 76832 12c20 twothreads
* eCos with NET FreeBSD :
text data bss dec hex filename
213712 3592 322176 539480 83b58 twothreads
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