Scaling the Boot Barrier: Identifying & Eliminating Contention in Openstack

Speaker: Peter Feiner, gridcentric

On a beefy machine (24 cores, 96 GB RAM, SSD), booting a single instance (from “nova boot”” to ACTIVE) takes seconds. However, when you try booting 20 instances in parallel, the last instance might not be ACTIVE for minutes! While you’re waiting, you notice that the host’s CPUs and disk are mostly idle and there’s plenty of free RAM. While your instances are BUILDING, you wonder what’s going on — why’s this taking so long?

For more summit videos, visit: http://www.openstack.org/summit/portland-2013/session-videos/

About The Author
- The OpenStack Foundation promotes the development, distribution and adoption of the OpenStack cloud operating system. As the independent home for OpenStack, the Foundation has already attracted more than 9,500 individual members from 100 countries and 850 different organizations, secured more than $10 million in funding and is ready to fulfill the OpenStack mission of becoming the ubiquitous cloud computing platform.

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