OpenStack Summit October 2015 Tokyo

Swift Erasure Code support is finally here and the big question now is “How does it perform?”  There has been much speculation about when it should be used and where the tradeoffs will be for cost versus performance.  This talk will end the speculation with a carefully designed performance study carried out by Intel and SwiftStack on multiple clusters with various configurations of CPU, memory, network and media.  We will compare some basic workloads for EC versus replication with all other factors the same and see exactly how things stack up.  In addition to the data, we will talk about some experiments in tuning Swift and how various parameters affect the performance per policy.