Meta Reportedly Unveils CRAM Memory Compression Solution, with Read-only Performance Approaching Native DRAM

According to media reports, Meta has recently presented an experimental memory compression solution called CRAM (Compressed RAM) at LPC 2026. The solution aims to keep compressed data in memory form, thereby reducing the software overhead associated with traditional Swap path, rather than simply replacing ZRAM or zswap. The core idea of CRAM is to provide hardware-compressed memory to Linux as a special type of NUMA memory, instead of emulating it as a block storage device. It is said that, in pure read scenarios, CRAM's throughput performance is up to 452 times higher than that of the current mainstream ZRAM, and its actual operating speed is already extremely close to native DRAM.