4 ms·
Connection between XPoint and the performance characteristics of Optane products was never clear. For example, why would XPoint devices have near same throughp
by frozenport 5y ago
Connection between XPoint and the performance characteristics of Optane products was never clear.
For example, why would XPoint devices have near same throughput to conventional SSDs but half the latency? Why smaller densities (the nm node?)?
- exmadscientist 5y agoI'm pretty sure a decent chunk of this is related to the block granularity. NAND flash is a block-oriented structure; NOR flash and 3DXPoint are byte-oriented. There's a pretty different internal storage and ECC path for those two approaches. In particular, due to how it is accessed, 3DXPoint does not (as far as I know) run background erases and block GCs. This is a major help to its latency.
- VinothS 5y ago> 3DXPoint does not (as far as I know) run background erases and block GCs. Seems like they do need wear-leveling. https://twitter.com/stuntpants/status/1410679934515773441 https://twitter.com/stuntpants/status/1410679934515773441