RELENG_7_0: vm_thread_new: kstack allocation failed
Kostik Belousov
kostikbel at gmail.com
Tue Jan 22 21:12:40 PST 2008
On Tue, Jan 22, 2008 at 03:45:32PM -0800, Xin LI wrote:
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> Hi,
>
> I have got a lot of this in dmesg output for RELENG_7_0 as of today:
>
> vm_thread_new: kstack allocation failed
> vm_thread_new: kstack allocation failed
> vm_thread_new: kstack allocation failed
> vm_thread_new: kstack allocation failed
> vm_thread_new: kstack allocation failed
> vm_thread_new: kstack allocation failed
>
> Any idea?
Does it cause any problems aside from printing these messages ?
What workload do you put on the machine ?
The messages came from the failure of the kernel to allocate address
space for the kernel stack for a thread being created. Previously, the
system would panic encountering this situation.
This may happen due to kernel_map address space depletion, for instance,
by having a lot (on i386 machines with > 1Gb memory, ~40000) threads.
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