On 2011-01-28 1:28 PM, Alexander Gordeev wrote: > Hi! > > I have a device with only 16MB of memory and I want to run threaded > applications on it. The size of allocated stack space in uClibc's > implementation of pthread_create equals to the stack size limit as > returned by ulimit -s (or the default for the current architecture if > the limit is set to 'unlimited' which is 2MB for MIPS). The problem is > that the limit on my 16MB box is somehow set to 8MB for all processes > which is a half of available RAM so the allocation fails. If I enable > aggressive overcommit (echo 1 > /proc/sys/vm/overcommit_memory) or > lower the limit (ulimit -s 2048 or ulimit -s unlimited) then everything > works like a charm. > > Where is the 8MB stack size limit set? > > BTW I use openwrt trunk, uClibc 0.9.32 with nptl, everything else is > default. Please try copying this patch to toolchain/uClibc/patches-0.9.32 - http://nbd.name/190-nptl_use_arch_default_stack_limit.patch and see if rebuilding uclibc with it fixes the problem.
The issue that I found is that if getrlimit returns a valid value for the stack limit, it will be used as a default even if the architecture specific default is lower. - Felix _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
