> So in px4, I end up seeing stack usage 100% on some threads (in "ps"), which > I want to fix.
PR #1900 (https://github.com/apache/incubator-nuttx/pull/1900) fixes the issue. > In the past (9 or so years ago) there was an issue with floating point that > required the stack to be 8 byte aligned. It was too long ago, so I do not > remember the details This is currently not an issue. The alignment of the stack pointer to 8 bytes is assured. The size of the stack is not forced to be 8 aligned, but that doesn't matter: Either your stack is large enough, or not. But thanks for your hint. Johannes