Port baseline engine and anomaly detection to Dashboard#793
Merged
erikdarlingdata merged 3 commits intodevfrom Apr 7, 2026
Merged
Port baseline engine and anomaly detection to Dashboard#793erikdarlingdata merged 3 commits intodevfrom
erikdarlingdata merged 3 commits intodevfrom
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Changes across Dashboard, Lite, and InstallerGui: - ForegroundDimColor now matches ForegroundColor in all 6 themes - InstallerGui ForegroundMutedBrush changed to foreground color - ScottPlot chart text colors (#9DA5B4, #4A5568, #364D61) replaced with foreground equivalents (#E4E6EB, #1A1D23, #1A2A3A) - SlicerLabelBrush changed from 60% opacity to full opacity - Email template text changed from #808080 to #E4E6EB - Removed Opacity="0.45" from empty-state icons in ServerTab Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Phase 1-3 of the baselines plan for Lite: Engine: - BaselineProvider: 30-day rolling baselines bucketed by hour-of-day x day-of-week with bucket collapse (full → hour-only → flat) and hysteresis (10/15 thresholds) - Restart poisoning exclusion for cumulative metrics (batch requests, wait stats, query duration) using QUALIFY + LAG heuristic in DuckDB - 4 existing anomaly detectors upgraded from flat 24h lookback to time-bucketed - 4 new detectors: batch requests/sec, session counts, query duration, memory - Per-metric configurable deviation thresholds (default 2σ) - Proportional stddev floor (max(stddev, mean*0.01)) for division-by-zero - Fix BigInteger cast error on DuckDB SUM() for session/query duration detectors MCP: - analyze_server: baseline context in anomaly findings output - compare_analysis: updated description noting time-bucketed baselines - Anomaly fact metadata includes baseline_hour, baseline_dow, baseline_tier UI (Overview tab): - Baseline bands (mean ± 2σ) on CPU, Wait Stats, I/O Latency, Blocking lanes - Red anomaly dots for values outside band (with absolute minimum thresholds) - Tooltip ▲/▼ indicators (colored red/green) for anomalous values - "Compare to" dropdown: overlay yesterday/last week as dashed ghost lines - Right-side value labels removed, charts expanded to full width - Memory lane renamed to "Buffer Pool MB" - Blocking/Deadlocks shown on separate lines in tooltip Tests: - 15 BaselineProvider tests (buckets, collapse, hysteresis, restart poisoning, division-by-zero, cache, server isolation, memory) - 10 AnomalyDetector tests (all new detectors, per-metric thresholds, metadata) - 257/257 total tests passing Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add SqlServerBaselineProvider: time-bucketed baselines from SQL Server collect.* tables with @@DATEFIRST normalization, CTE restart exclusion, bucket collapse hierarchy (full → hour-only → flat), 1-hour TTL cache - Upgrade SqlServerAnomalyDetector: inject baseline provider, upgrade 4 existing detectors to time-bucketed baselines, add 3 new detectors (batch requests, sessions, query duration) - Update FactScorer: score ANOMALY_BATCH_REQUESTS, ANOMALY_SESSION_SPIKE, ANOMALY_QUERY_DURATION (deviation-based) - Port correlated timeline lanes UI: baseline bands, anomaly dots, Compare dropdown with ghost line overlay, remove right-side value labels, rename Memory MB → Buffer Pool MB, fix auto-refresh flicker - Port crosshair manager: ▲/▼ baseline indicators, comparison label, event-based spike detection for blocking/deadlocks - Fix pre-existing CPU tooltip bug: data returned DESC, binary search assumed ASC — added OrderBy - Fix event-based baseline: use wait_stats spine for zero-inclusive baselines, handle zero-mean EffectiveStdDev for event metrics - Cross-server validated on sql2016–sql2025, all queries < 250ms Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This was referenced Apr 7, 2026
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Summary
SqlServerBaselineProvider) with SQL Servercollect.*tables,@@DATEFIRSTnormalization, CTE restart exclusionSqlServerAnomalyDetectorto time-bucketed baselines + 3 new detectors (batch requests, sessions, query duration)Test plan
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