В Fri, 28 Jan 2011 13:47:18 +0100 Felix Fietkau <n...@openwrt.org> пишет:
> 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. Yes, this patch fixes my problem, thank you very much! -- Alexander
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