wjones
7eb2b445cb
- Major query performance boost: replaced correlated subqueries with DistinctBy() in BaseItemRepository, added episode deduplication index, and increased default command timeout to 120s. - Fixed LibraryMonitor shutdown race: added disposal checks and exception handling in FileRefresher to prevent ObjectDisposedException. - Added PowerShell and SQL utilities for fixing Linux paths in config files and database; new scripts for WebDir and path migration. - Auto-fix for WebDir in startup.json on load; new helper scripts and docs. - Added automated weekly DB performance monitoring scripts and reporting. - Expanded documentation and README for all fixes, scripts, and migration steps. - Updated SQL scripts for index creation and diagnostics; improved output handling. - Updated db-config defaults and added new diagnostic/report files.
65 lines
2.3 KiB
SQL
65 lines
2.3 KiB
SQL
-- Performance Indexes for BaseItems Table
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-- These indexes improve performance of grouping queries in BaseItemRepository
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-- Run on PostgreSQL database
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\pset pager off
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-- Connect to your Jellyfin database first:
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-- \c jellyfin_testdata
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-- Index for PresentationUniqueKey grouping
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-- Used by queries that group by PresentationUniqueKey
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CREATE INDEX CONCURRENTLY IF NOT EXISTS "IX_BaseItems_PresentationUniqueKey"
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ON library."BaseItems" ("PresentationUniqueKey")
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WHERE "PresentationUniqueKey" IS NOT NULL;
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-- Index for SeriesPresentationUniqueKey grouping
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-- Used by queries that group by SeriesPresentationUniqueKey
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CREATE INDEX CONCURRENTLY IF NOT EXISTS "IX_BaseItems_SeriesPresentationUniqueKey"
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ON library."BaseItems" ("SeriesPresentationUniqueKey")
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WHERE "SeriesPresentationUniqueKey" IS NOT NULL;
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-- Composite index for queries using both keys
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-- Covers the case where both grouping keys are used together
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CREATE INDEX CONCURRENTLY IF NOT EXISTS "IX_BaseItems_PresentationKeys_Composite"
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ON library."BaseItems" ("PresentationUniqueKey", "SeriesPresentationUniqueKey", "Id")
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WHERE "PresentationUniqueKey" IS NOT NULL
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OR "SeriesPresentationUniqueKey" IS NOT NULL;
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-- Index for Type + TopParentId (common filter combination)
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-- Improves WHERE clause filtering before grouping
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CREATE INDEX CONCURRENTLY IF NOT EXISTS "IX_BaseItems_Type_TopParentId"
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ON library."BaseItems" ("Type", "TopParentId")
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WHERE "TopParentId" IS NOT NULL;
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-- Index for Type + TopParentId + PresentationUniqueKey (covering index)
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-- Covers the entire query pattern for TV Series queries
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CREATE INDEX CONCURRENTLY IF NOT EXISTS "IX_BaseItems_Series_Grouping"
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ON library."BaseItems" ("Type", "TopParentId", "PresentationUniqueKey", "Id")
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WHERE "Type" = 'MediaBrowser.Controller.Entities.TV.Series'
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AND "TopParentId" IS NOT NULL;
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-- ANALYZE to update statistics after creating indexes
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ANALYZE library."BaseItems";
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-- Verify indexes were created
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SELECT
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schemaname,
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tablename,
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indexname,
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indexdef
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FROM pg_indexes
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WHERE tablename = 'BaseItems'
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AND schemaname = 'library'
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ORDER BY indexname;
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-- Check index sizes
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SELECT
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schemaname,
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tablename,
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indexname,
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pg_size_pretty(pg_relation_size(indexrelid)) AS index_size
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FROM pg_stat_user_indexes
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WHERE tablename = 'BaseItems'
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AND schemaname = 'library'
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ORDER BY pg_relation_size(indexrelid) DESC;
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