Thanks, that's it! Now I have 4 VMs with 16GB each on a 48GB host, it will probably blow up or swap itself to death if all Machines need all the memory, but in this case that's exactly what's needed.
Cheers, Martin -----Ursprüngliche Nachricht----- Von: Glenn Wagner [mailto:glenn.wag...@shapeblue.com] Gesendet: Mittwoch, 20. Mai 2015 16:44 An: users@cloudstack.apache.org Betreff: RE: KVM memory overprovisioning behaviour Hi, Just check the agent.properties on the KVM host /etc/cloudstack/agent/agent.properties vm.memballoon.disable=true set the mem.overprovisioning.factor in the Global Settings to 2 Try provision again Thanks Glenn Wagner Senior Consultant, South Africa Phone: +27 21 527 0091 | Mobile: +27 73 917 4111 glenn.wag...@shapeblue.com | www.shapeblue.com | Twitter:@shapeBlue ShapeBlue SA (Pty) Ltd, 2nd Floor, Oudehuis Centre, 122 Main Rd, Somerset West, Cape Town 7130 -----Original Message----- From: Martin Emrich [mailto:martin.emr...@empolis.com] Sent: 20 May 2015 03:57 PM To: users@cloudstack.apache.org Subject: KVM memory overprovisioning behaviour Hi! I just tried memory overprovisioning with ACS 4.4.3 and KVM on Ubuntu 14.04. With a ratio of 2.0, a VM configured for 1024MB RAM only sees 512MB RAM (the VM is also running Ubuntu 14.04 with CONFIG_VIRT_BALLOON=y) even if the host is not yet overloaded. This is obviously useless, as I could have configured an offering with 512MB in the first place ;) I can use "virsh setmem" manually to claim the full 1024MB. I would expect to have the 1024MB unless the host is overloaded, in which case the VMs are reduced proportionally (as XenServer does it) or based on actual usage. There are lots of threads and wiki pages on memory overcommit or memory overprovisioning, but most seem outdated or incomplete. Is such a behaviour possible with current CloudStack, libvirt and KVM? Thanks Martin Find out more about ShapeBlue and our range of CloudStack related services IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> CSForge – rapid IaaS deployment framework<http://shapeblue.com/csforge/> CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> CloudStack Software Engineering<http://shapeblue.com/cloudstack-software-engineering/> CloudStack Infrastructure Support<http://shapeblue.com/cloudstack-infrastructure-support/> CloudStack Bootcamp Training Courses<http://shapeblue.com/cloudstack-training/> This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company registered by The Republic of South Africa and is traded under license from Shape Blue Ltd. ShapeBlue is a registered trademark.
