Date: Sat, 28 Feb 2009 22:30:54 +0000 From: Pete French <petefrench@ticketswitch.com> To: freebsd-stable@freebsd.org Subject: vm_thread_new: kstack allocation failed with vm.kmem_size="1536M" Message-ID: <E1LdXhu-0007nK-8N@dilbert.ticketswitch.com>
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So, I have a farm of machines runnign 7.1/amd64, all of which have 16 gig of memory in them. This afternoon, as an experiment, I altered loader.conf to have these two lines in it: vm.kmem_size="1536M" vm.kmem_size_max="1536M" This is what I do on machines running ZFS - these machines are not, however running ZFS, and do not have the zfs module loaded. I just wanted to see if they would run OK with those kernel settings (as I may put ZFS on them in the future) I expected it to run fine, I just wanted to make sure. But after about an hour I started getting the message in the subject line, and the machines were unable to fork and needed to be reset. Explanation anyone ? This makes no sense to me - I have actually expanded the amount of memory available, so why is it now running out of stack space ?! The machines are running a very simple setup of apache, mysql and tomcat - and this runs fine with the kernel variables set as default. I am very puzzled. -pete.
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