Gilles Chanteperdrix wrote: > Jan Kiszka wrote: >> Gilles Chanteperdrix wrote: >>> Jan Kiszka wrote: >>>> Gilles Chanteperdrix wrote: >>>>> Jan Kiszka wrote: >>>>>> Hi Gilles, >>>>>> >>>>>> how much XENO_OPT_SYS_STACKPOOLSZ do I need to run switchtest for >>>>>> default settings? At least on x86-64, the default 32K is not enough. >>>>>> Unless we talk about GB ;), maybe it makes sense to adjust the default >>>>>> size accordingly. >>>>> It depends on the arguments you pass to switchtest. >>>> None, ie. the default settings. >>> Then 6 kernel-space tasks are created. Since switchtest is not the >> 6*4 is 20k... Ah, the well-known allocator overhead, I guess. Will try >> with >= 40k. >> >>> average use of Xenomai, and is supposed to be used only for validating >>> the context/FPU switches, I would not change XENO_OPT_SYS_STACKPOOL_SZ, >>> maybe only add a clear message when creation of kernel-space tasks fails. >> Well, isn't the switchtest part of xeno-test? Would be unfortunate to >> require a kernel rebuild just for running the standard tests. I think we >> don't loose much by slightly increasing the stack to, say, 64K on 32 bit >> and 128K on 64 bit archs. > > The kernel rebuild is already required since the switchtest driver is > not compiled by default.
Even if it were default off (which it isn't), requiring a second rebuild due to this implicit dependency would remain, well, unfortunate. I will propose a Kconfig adjustment later. Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
