Meta提出CRAM内存压缩方案：读取性能接近原生DRAM

与传统将压缩数据模拟成块设备的 ZRAM / zswap 不同，CRAM 允许压缩数据保持页表映射和页缓存状态，支持 Cacheline（缓存行）及字节级访问。
在只读测试中，CRAM 最差情况下可达到每秒约 4.89 亿次操作，远胜传统 ZRAM 约每秒 110 万次。
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Meta Developing Compressed RAM
Meta Developing Compressed RAM "CRAM" For Linux: Better Than ZRAM & Zswap
With today's memory shortages, high prices, and ever increasing memory capacity needs, Meta engineers have been working on Compressed RAM 'CRAM' for Linux
 
 
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