{
  "slug": "tiptoe",
  "term": "TIPTOE",
  "aliases": [
    "TIP with Temporal Overload Estimators"
  ],
  "definition": "TIPTOE is a research prefetching and caching algorithm that adds disk-load-aware estimates to TIP-2's shared-buffer allocation.",
  "note": "Deep prefetch can help when upcoming reads exceed a disk's available service time. Evicting reusable data from that constrained disk also becomes more costly. [tiptoe97]",
  "advantages": [],
  "limitations": [
    {
      "text": "The trace-driven simulation omits paging interference and does not explore mostly inaccurate hints.",
      "citationIds": [
        "tiptoe97"
      ]
    }
  ],
  "related": [
    "informed-prefetching",
    "prefetch-trigger-distance",
    "prefetch-wastage",
    "table-based-prefetching"
  ],
  "status": "research",
  "supersedes": [],
  "supersededBy": [],
  "firstSeen": null,
  "lastSeen": null,
  "updated": "2026-11-14",
  "citations": [
    {
      "id": "tiptoe97",
      "title": "Tomkins, Patterson and Gibson. Informed Multi-Process Prefetching and Caching. SIGMETRICS 1997, sections 2-5 and Table 2.",
      "url": "https://pdl.cmu.edu/PDL-FTP/TIP/Sigmetrics97.pdf",
      "accessed": "2026-11-14"
    }
  ],
  "provenance": [
    "Source review, not a simulator rerun. The 1997 results do not establish present-day Linux or SSD performance."
  ]
}