FreeBSD 6 vs 8.1
mats.w.lindberg at gmail.com
Mon Mar 14 11:17:36 UTC 2011
I am migrating from FreeBSD 6.3 to FreeBSD 8.1 And I have noticed some, what
I think is, strange behaviour.
In FreeBSD 6.3 when I do
> swapoff -a
> dd if=/dev/zero of=/tmp/whatever bs=1G count=1
I get something like "out of memory - killed"
In FreeBSD 8.1 doing the same - processes around start to die, e.g. all
getty's are killed and finally devfs goes the same way.
My target is diskless nfs mounted to a linux fileserver - hence no swap
It does not seem to be relalted to the nfs root however - I get the same
behaviour running FBSD-8.1 in a VMWARE server session.
Is this a new 'feature' of FBSD or just a bug?
Are there some sysctl's to set to 'really' turn of swapping.
At one instance I also got a kernel panic saying 'page fault in kernel' but
I'm having a hard time to repeat just that.
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