CLASSIFICATION (9) Updating

• Criterion #9: Updating (U).

  • The main memory can be updated at the time of cache write, or with some delay.

• Classes:

  • Write-through (t) as in [CHEON89]
  • Write-back (b) as in [CYTRO88,BENN90b]
  • Hybrid (both WT and WB) (h) as in [SMITH85]
  • Alternative (either WT or WB) (a) as in [TARTA92].

• Comment:

  • Hybrid schemes offer write-through for private data and write-back for shared data