t4a8945 claims their KV-cache pressure probe exposes actual cache retention and context eviction in local LLM deployments, enabling operators to validate cache-management fixes against observed behavior rather than advertised capacity.
state: expiredheat: lowuncertainty: highconvergesscott: lowkv-cache local-inference inference-benchmarkingt4a8945
What is this?
The case attributes to t4a8945 a pressure probe intended to test local LLM KV-cache retention and show when older contexts are evicted, with the claimed benefit of validating cache-management fixes against observed behavior. The supplied search snippets establish related work on memory-bounded KV caches, selective token retention, and eviction policies, but none identifies this probe or its creator. Its implementation, supported inference stacks, and ability to distinguish actual cache eviction from other causes of context loss remain unverified in the supplied material.
Why it matters to Scott
The probe’s claimed measurement-first approach converges with Scott’s Observability and Hardware-aware local inference positions, with a potential test target in gamepc’s shared Ollama endpoint. However, neither Ollama compatibility nor reliable identification of actual KV-cache eviction is established, so this remains an unverified example of his existing approach rather than an actionable diagnostic; the radar’s ctx-cliff case tracks related serving-boundary tests, not demonstrably this probe.
ip:concept.observabilitydev:concept.hardware-aware-local-inferencedev:project.gamepcradar:ctx-cliff-local-inference-benchmarkradar:concept.kv-cache
queries asked of Scott's wikis
- local inference KV-cache memory limits and capacity planning
- inference observability pressure tests advertised versus measured capacity
- agent harness long-running sessions context loss diagnostics
- cache eviction regression tests and benchmark validity
- agent memory persistence versus runtime context retention
Measured heat
no measured readings yet — the hourly heat pass fills this in
How the heat travelled
no chain yet — the hourly chain pass fills this in
Evidence (2) — ⭐ canonical anchor
Interpretation history
2026-09-10T22:37:03Z
The case has faded without an accessible probe artifact, independent validation, or a concrete follow-up expected; the separate prefill-slowdown report does not validate its cache-retention claims. Expire active tracking without treating the hypothesis as disproved; a reproducible implementation or backend-level replication would justify reopening.
2026-09-08T21:45:53Z
The newly attached slowdown report illustrates a local-inference diagnostic need, but neither establishes cache eviction nor independently validates the pressure probe. Its different backend and uncontrolled symptoms leave the probe’s measurement validity and applicability to Scott’s stack unchanged.
2026-09-08T21:22:50Z
evidence attached: reddit.post.1wb1ca7 — The reported context-dependent prefill slowdown is relevant evidence about KV-cache pressure and eviction behavior in local inference.
2026-09-07T11:27:54Z
The refreshed discussion adds LMCache as a suggested comparison, not evidence that the probe works or that the author's vLLM fixes outperform existing cache management. The case remains an unverified diagnostic claim; no implementation artifact, independent replication, or demonstrated applicability to Scott’s stack changes its meaning.
2026-09-07T02:33:41Z
New comments quote an apparent retention surplus over advertised capacity, but provide no independent replication or accessible measurement artifact. Their methodological critiques sharpen the unresolved question: whether the probe measures cache retention reliably rather than altering cache state, and how unchanged-input replay differs from prefix reuse after edits.
2026-09-06T10:28:31Z
This remains an unverified diagnostic-tool claim, with no new artifact, validation results, or independent testing to change its meaning. The distinction between runtime KV-cache eviction and loss of application conversation history remains important; neither measured cache behavior nor applicability to Scott’s stack is established.
2026-09-06T10:25:21Z
grounded: converges/low — The probe’s claimed measurement-first approach converges with Scott’s Observability and Hardware-aware local inference positions, with a potential test target i
2026-09-06T10:22:45Z
case created — The author's concrete diagnostic-tool announcement is distinct from existing cache-optimization cases, although the truncated evidence establishes no measured capacity discrepancy.
Decision trace
- 09-11 08:37expireThe case has faded without an accessible probe artifact, independent validation, or a concrete follow-up expected; the separate prefill-slowdown report does not validate its cache-retention claims. Ex
- 09-11 08:37alert_silentThe only new trigger is staleness, not a consequential development. There is no new tool availability, validated diagnosis, or actionable fix that merits interrupting Scott.
- 09-11 08:37alert_routeThe only new trigger is staleness, not a consequential development. There is no new tool availability, validated diagnosis, or actionable fix that merits interrupting Scott.
- 09-09 07:45repriceThe newly attached slowdown report illustrates a local-inference diagnostic need, but neither establishes cache eviction nor independently validates the pressure probe. Its different backend and uncon
- 09-09 07:45alert_silentThe operator report provides no identified regression, reproducible cache diagnosis, or actionable fix, and the refreshed comments add no validation. Normal briefing cadence loses no consequential opp
- 09-09 07:45alert_routeThe operator report provides no identified regression, reproducible cache diagnosis, or actionable fix, and the refreshed comments add no validation. Normal briefing cadence loses no consequential opp
- 09-09 07:22alert_silentThe new delta is one operator’s report of prefill slowing to roughly 30 tokens/s near 70% context occupancy on a specific Windows/beellama configuration. It supplies a useful troubleshooting example,
- 09-09 07:22alert_routeThe new delta is one operator’s report of prefill slowing to roughly 30 tokens/s near 70% context occupancy on a specific Windows/beellama configuration. It supplies a useful troubleshooting example,
- 09-09 07:22attachThe reported context-dependent prefill slowdown is relevant evidence about KV-cache pressure and eviction behavior in local inference.
- 09-09 07:22propose_attachThe reported context-dependent prefill slowdown is relevant evidence about KV-cache pressure and eviction behavior in local inference.
- 09-07 21:27repriceThe refreshed discussion adds LMCache as a suggested comparison, not evidence that the probe works or that the author's vLLM fixes outperform existing cache management. The case remains an unveri
- 09-07 21:27alert_silentA commenter’s suggested alternative adds a useful evaluation question but no consequential tool, access, or validated measurement delta. This can wait for a briefing unless a reproducible probe or ind
- 09-07 21:27alert_routeA commenter’s suggested alternative adds a useful evaluation question but no consequential tool, access, or validated measurement delta. This can wait for a briefing unless a reproducible probe or ind
- 09-07 21:21sensor_dirtycomment_update
- 09-07 12:33repriceNew comments quote an apparent retention surplus over advertised capacity, but provide no independent replication or accessible measurement artifact. Their methodological critiques sharpen the unresol
- 09-07 12:33alert_silentThe delta adds useful validation criteria, not a verified diagnostic result or actionable change for Scott’s stack. The quoted capacity discrepancy can wait for a briefing; reproducible backend-level
- 09-07 12:33alert_routeThe delta adds useful validation criteria, not a verified diagnostic result or actionable change for Scott’s stack. The quoted capacity discrepancy can wait for a briefing; reproducible backend-level
- 09-07 12:21sensor_dirtycomment_update
- 09-07 08:21sensor_dirtyengagement_update
- 09-07 01:21sensor_dirtyengagement_update
- 09-06 23:21sensor_dirtyengagement_update
- 09-06 20:28repriceThis remains an unverified diagnostic-tool claim, with no new artifact, validation results, or independent testing to change its meaning. The distinction between runtime KV-cache eviction and loss of
- 09-06 20:28alert_silentThe reobservation adds no consequential evidence beyond the previously assessed announcement. A usable probe with validated eviction measurements or demonstrated compatibility with Scott’s deployment
- 09-06 20:28alert_routeThe reobservation adds no consequential evidence beyond the previously assessed announcement. A usable probe with validated eviction measurements or demonstrated compatibility with Scott’s deployment
- 09-06 20:27alert_silentThe author describes a concrete cache-pressure testing protocol with a useful operational warning: running it displaces existing cached contexts. However, the supplied post provides no accessible tool
- 09-06 20:27alert_routeThe author describes a concrete cache-pressure testing protocol with a useful operational warning: running it displaces existing cached contexts. However, the supplied post provides no accessible tool
- 09-06 20:25groundThe probe’s claimed measurement-first approach converges with Scott’s Observability and Hardware-aware local inference positions, with a potential test target in gamepc’s shared Ollama endpoint. Howev
- 09-06 20:22createThe author's concrete diagnostic-tool announcement is distinct from existing cache-optimization cases, although the truncated evidence establishes no measured capacity discrepancy.