Thank you for the clarifications. With regards, Seif
On Mon, Oct 19, 2009 at 11:31 AM, Simon Goldschmidt <goldsi...@gmx.de>wrote: > > > I need confirmation about the lwIP memory use. > > > > The lwIP uses two areas of memory: > > - one dedicated to the buffers pbuf and defined by : > > PBUF_POOL_SIZE x PBUF_POOL_BUFSIZE > > - and one area for the structures (tcp_pcb, udp_pcb) and other > > variables which are dynamically allocated, and this area is defined > > by: the MEM_SIZE > > That's not all (and partly not correct): > - There are 3 types of pbufs: REF/ROM, RAM and POOL. PBUF_POOL_SIZE * > PBUF_POOL_BUFSIZE only refers to type POOL. > - RAM pbufs are allocated in the memory defined by MEM_SIZE (this memory is > not used much aside from RAM pbufs) - this is the *heap* and it is allocated > as mem_memory. > - REF/ROM pbufs as well as pcbs and some other stuff is allocated from > dedicated pools per structure type. The amount of structures is defined by > the various MEMP_NUM_ defines. Together, this memory is allocated as > memp_memory and it *includes* the pbuf POOL. > > However, if you define MEMP_MEM_MALLOC to 1 in your lwipopts.h, *every* > piece of dynamically allocated memory will come from the heap (the size of > which is defined by MEM_SIZE). > > Simon > -- > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 > > > _______________________________________________ > lwip-users mailing list > lwip-users@nongnu.org > http://lists.nongnu.org/mailman/listinfo/lwip-users >
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