Eternity1824 opened a new pull request, #903:
URL: https://github.com/apache/skywalking-banyandb/pull/903
### Summary
This PR clarifies KTM metric semantics and workload interpretation
to improve logical consistency and automation-readiness.
No implementation behavior is changed.
---
### What’s changed
- **Latency-gated evaluation**
- Makes it explicit that all workload patterns are evaluated only
after syscall-level read latency degradation is observed.
- **Clearer signal semantics**
- Clarifies that page cache add / reclaim signals are correlated
context rather than direct root causes.
- **Improved workload discrimination**
- Refines the distinction between cache eviction–driven churn and
compaction-induced read contention to avoid pattern collapse
in LSM workloads.
- **Cross-layer responsibility**
- Documents that some scenarios require correlating KTM kernel
signals with database-level metrics via the FODC Proxy.
- **Operational clarifications**
- Clarifies sliding window behavior (fixed-size buffer, variable
retention).
- Clarifies data flow (local pull, remote gRPC push).
---
### Scope
- Documentation-only change
- No behavior, metric, or interface changes
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