~/talk

Promise and Pitfalls of Persistent Memory

on YouTube 43m
Talkat Strange Loop 2017 · 2017-09-28..09-30· [databases, web-performance]

speaker

name:Rob Dickinson
links:none on file

resources

video:https://youtu.be/VE1hCUMLHX4
slides:none on file

summary

Persistent memory claims real, measurable differences: 3D XPoint ships as SSDs today and DIMMs next year, offering 3 TB per socket capacity with media-level 256-byte ECC blocks, latency between DRAM and SSD, and much higher endurance than NAND. Software tooling exists—NVML on GitHub and pmemkv—for DAX/memory‑map and load/store access. Benchmarks show faster restart and WAL/Redis acceleration when properly flushing and adding transactional protection; pointer, allocator, and error‑handling changes are required and nontrivial.

AI-written summary · about

chapters (8)

  1. 0:00PROMISE AND PITFALLS OF PERSISTENT MEMORY
  2. 2:14I'M NOT ONE OF THOSE INTEL ENGINEERS INA BUNNY SUIT
  3. 18:52PROGRAMMING FOR PERSISTENT MEMORY
  4. 31:57ADAPTING SOFTWARE FOR PERSISTENT MEMORY
  5. 38:14POSITION INDEPENDENCE Virtual memory ranges change all the time Persistent memory ranges do not
  6. 38:39MEMORY ALLOCATION & GC Regular memory allocators aren't appropriate A leak in persistent memory remains leaked
  7. 39:04TRANSACTIONS & LOCKING Preventing torn updates using transactions Resetting abandoned locks
  8. 39:40ERROR DETECTION & HANDLING Coping with media failures or corruption

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