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. BTW, XNARCH_THREAD_STACKSZ for x86-64 equals the x86-32 bit value (4K) while I don't think the have they same demands (nor the same resource restrictions). Jan -- Siemens AG, Corporate Technology, CT SE 2 Corporate Competence Center Embedded Linux _______________________________________________ Xenomai-core mailing list [email protected] https://mail.gna.org/listinfo/xenomai-core
