On 2011-01-29 12:53 AM, Alexander Gordeev wrote:
> 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!
Committed in r25223, thanks for testing.

- Felix
_______________________________________________
openwrt-devel mailing list
openwrt-devel@lists.openwrt.org
https://lists.openwrt.org/mailman/listinfo/openwrt-devel

Reply via email to