Meta engineers are developing CRAM (Compressed RAM) for Linux, a hardware-offloaded memory compression approach designed to provide direct cacheline- and byte-level access to compressed memory.
At Linux Plumbers Conference 2026, Meta presented performance results showing read-only CRAM access close to raw DRAM performance, while write performance was substantially faster than zram, zswap, and conventional swap in the demonstrated workloads.
Linux kernel work for the CRAM memory-management subsystem is already under development, although the feature is not yet a finished upstream Linux capability.
The source article is in Japanese.