ChipsDan Luuover 11 years ago
CLWB and PCOMMIT
10 min read
Intel's latest manual adds CLWB and PCOMMIT instructions for non-volatile storage. The instructions address OS overhead that can exceed disk access costs with fast NVRAM like PCM and 3D XPoint. Bypassing the OS reduces latency by 62% over plain Linux, but overhead still dominates write costs.
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