Date: Tue, 22 Sep 2015 20:50:35 +0200 From: =?UTF-8?Q?Bernhard_Fr=C3=B6hlich?= <decke@bluelife.at> To: Martin Birgmeier <la5lbtyi@aon.at> Cc: freebsd-emulation@freebsd.org, Mark Felder <feld@freebsd.org> Subject: Re: VirtualBox mangles memory Message-ID: <CAE-m3X1eZww8FGu1kTmUwn7dyQNXjXySgHO=WRsGEbJKvWL=AA@mail.gmail.com> In-Reply-To: <56017026.6040809@aon.at> References: <55FE9662.7000406@aon.at> <1442866256.1127084.389759513.29E96282@webmail.messagingengine.com> <56017026.6040809@aon.at>
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To me this sounds a lot like vbox and zfs arc are fighting for resources. What does the memory line in top look like when this problem happens? A simple workaround would be to limit zfs arc in loader.conf if that is the problem. Am 22.09.2015 5:13 nachm. schrieb "Martin Birgmeier" <la5lbtyi@aon.at>: > > This did not happen when the machine was running FreeBSD 9.2 with virtualbox-ose-4.3.20 installed. So I would not qualify this as "known behavior". > > One server has 16G main memory, a VM gets 3G. The other has 8G main mem and again 3G allocated to the VM. > > This is definitely a bug in how VirtualBox handles memory on FreeBSD 10. I am pretty sure that something changed in FBSD 10 which was not properly taken care of in VB. > > -- Martin > > > > On 09/21/15 22:10, Mark Felder wrote: > > > > On Sun, Sep 20, 2015, at 06:20, Martin Birgmeier wrote: > >> On machines where VirtualBox is running, I get memory allocation errors. > >> > >> 'dd' aborts with 'dd: stdout: Cannot allocate memory' > >> > >> 'zfs send' aborts with 'internal error: Cannot allocate memory' > >> > >> I have created https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195970 > >> to track this. > >> > >> Could a knowledgeable person please have a look into this? > >> > >> FreeBSD 10.2, VirtualBox 4.3.30 > >> > >> -- Martin > >> > > I'm not an expert, but I think this is known behavior. Virtualbox > > requires a huge contiguous chunk of memory for the VM and that's > > probably what you're running into. > > > > Can you give more information about the specs of the server itself and > > the amount of resources allocated to VMs? > > > > _______________________________________________ > freebsd-emulation@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-emulation > To unsubscribe, send any mail to " freebsd-emulation-unsubscribe@freebsd.org"
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