LinuxCon + CloudOpen + ContainerCon NA 2015

Two greatest benefits of containers over VMs are -- much higher density and elasticity. One of the reasons for the former one is that containers can share most of their disk memory cache due to libraries (and sometimes binaries) being the same. Depending on the way containers' files are stored, different techniques to disk cache deduplication should be used. The growing popular approach based on device-mapper requires cross-disks cache manager.

In this presentation Pavel will review different approaches to organizing container's storage and their pros-n-cons, will describe the benefits of disk cache sharing and then will proceed to the PFCache technology from Odin that implements the mentioned cross-disk cache sharing and gives times larger density for containers.