I’m running an Ubuntu 12.04 server instance on VirtualBox on a OS X 10.7 host (MacBook Air 13″). The instance is configured with 512mb ram. The disk image is set to 8GB (dynamically allocated if that makes any difference) and is using 2.6GB.
I’ve just installed MongoDB from the 10gen repo as described here: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-debian-or-ubuntu-linux/
I haven’t changed any of the default settings as yet.
The mongod process is now running at 15-20% cpu constantly, before I’ve connected anything to it. I wouldn’t normally have checked but it’s now causing the fans to stay on whenever the VM is running.
Restarting mongodb makes no difference. Restarting the VM makes no difference.
The log is as follows:
Thu Jun 21 16:52:14 [initandlisten] MongoDB starting : pid=1737 port=27017 dbpath=/var/lib/mongodb 64-bit host=devbox
Thu Jun 21 16:52:14 [initandlisten] db version v2.0.6, pdfile version 4.5
Thu Jun 21 16:52:14 [initandlisten] git version: e1c0cbc25863f6356aa4e31375add7bb49fb05bc
Thu Jun 21 16:52:14 [initandlisten] build info: Linux ip-10-110-9-236 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41
Thu Jun 21 16:52:14 [initandlisten] options: { config: "/etc/mongodb.conf", dbpath: "/var/lib/mongodb", logappend: "true", logpath: "/var/log/mongodb/mongodb.log" }
Thu Jun 21 16:52:14 [initandlisten] journal dir=/var/lib/mongodb/journal
Thu Jun 21 16:52:14 [initandlisten] recover : no journal files present, no recovery needed
Thu Jun 21 16:52:14 [initandlisten] waiting for connections on port 27017
Thu Jun 21 16:52:14 [websvr] admin web console waiting for connections on port 28017
I’m assuming 15-20% cpu usage at idle isn’t normal, so I’d like to know if anyone has any suggestions on what to try to fix it?
edit
I’ve now converted the disk image to a fixed size VDI and it’s made no difference, still at 15-20% CPU usage on the guest.
This is a bug in VirtualBox on OSX as far as I can tell, I switched to Parallels and haven’t had an issue since.