US Patent 10423533 Filtered data cache eviction

A filtered data cache eviction method preserves data that might otherwise be evicted by condensing the data into fewer containers. In particular, hot pages or pages that are associated with a particular application's working set of data are condensed into fewer containers rather than being evicted. The data that is copy forwarded includes blocks or pages of data tracked as having been recently and/or frequently accessed or otherwise associated with an active file.