Re: [lwip-users] Out of memory errors under load

[Sergio R. Caprile]

The "ping" does not call the application, the GET does.
I would argument your memory is getting freed slower than it is alloced, 
but there have been numerous bug fixes and way so many enhancements in 
the web server since 1.4.1 that you should really try git head.

Strange things can happen if you don't respect the threading rules. Are 
you calling lwIP just from the main loop or do you use interrupts for rx 
and the main loop for sys_check_timeouts() ? (don't!, either all main or 
all interrupts, single thread, single context)