[En-Nut-Discussion] TCP uses to much memory with zero window?

Harald Kipp harald.kipp at egnite.de
Wed Jun 10 16:09:33 CEST 2009

Bernd Walter wrote:

> Updating worked after a few minor compile time problems.
> System is runnning with 4.8.2.
> I have a bit more free RAM after the update :-)

We changed the direction. Unlike with previous upgrades we hope to be
able to reduce memory usage in newer versions. ;-)

> But the network problem is still there.
> I started with about 26k free and it went below 3k and finally the
> system hang.

I'm not sure that this is network related. After upgrading, you are now
able to dump heap usage.



to UserConf.mk (build and app tree) and rebuild everything. At specific
locations within your application call


replacing <file-pointer> with your console stream, probably stdout.
You'll get a list of all allocated fragments, which will help to locate
the memory hole.


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