Date: Mon, 14 Mar 2011 14:43:48 +0100 From: Mats Lindberg <mats.w.lindberg@gmail.com> To: Mark Tinguely <marktinguely@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: FreeBSD 6 vs 8.1 Message-ID: <AANLkTim0HiXnDDm%2BBTG6jqrRa6CVaD=8xoL1dAC6fDb9@mail.gmail.com> In-Reply-To: <4D7E0831.4060804@gmail.com> References: <AANLkTi=23g1%2BKv%2B4Pmda3-75-r13GaRFu1_Mtofej3RJ@mail.gmail.com> <4D7DFC6F.80008@gmail.com> <AANLkTi=Gx=YZ%2BZr0q%2BFZ8mcbQyGhjZPSYm6de4ZVwSwx@mail.gmail.com> <4D7E0831.4060804@gmail.com>
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Hi again, just spotted the limit >>> swapsize unlimited I'll try to reset it and see what happens... 2011/3/14 Mark Tinguely <marktinguely@gmail.com> > > You are running out of physical memory, there is no swap backstore and the > kernel is killing off other programs to claim memory. > > Compare the /etc/login.conf on both systems. I bet in the FreeBSD 6.3 > system, the memory limit is set to a limit (8M) and on the FreeBSD 8.1 it > is much higher or is "unlimited". With a set memory limit, the "dd" is > killed before the kernel starts killing off the other program. > > > On 3/14/2011 6:41 AM, Mats Lindberg wrote: > > No - not from what I understand > in the vmware it looks like a real disk device /dev/ad0s1e > in the nfsroot'ed system I actually have 'of=/opt/something' which is > definately to the nfs disk. > > > 2011/3/14 Mark Tinguely <marktinguely@gmail.com> > >> On 3/14/2011 6:17 AM, Mats Lindberg wrote: >> >>> All >>> 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 >>> partition >>> 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. >>> >>> regards >>> Mats >>> _______________________________________________ >>> freebsd-hackers@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers >>> To unsubscribe, send any mail to " >>> freebsd-hackers-unsubscribe@freebsd.org" >>> >>> Do you have /tmp mounted on a memory filesystem? >> >> --Mark Tinguely >> >> > >
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