Søren Eggert Lundsteen Olsen
2284e7f082
A DBA should be able to review every statement SQLInsight sends to a monitored server before granting it access. "SQL Scripts/<rule-id>.sql" holds, per rule (82 built-in, 16 community), a Danish header (what and why, how C# judges the data, thresholds with config keys, severity, exact GRANTs, versions, collector file and member) and the collector's SQL verbatim, every version variant as its own batch. "_collectors/<Collector>.sql" holds each collector's queries once. The only statement that is not strictly read-only is documented in the scripts: the deadlock collector's session temp table (#system_health). Inline SQL in the collectors moved to internal constants and Build*Sql methods (no text changed), so SqlScriptTests can check that the scripts still contain the SQL the code sends, that every rule has a script, that every collector query is registered, and that nothing writes. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
92 lines
5.5 KiB
Transact-SQL
92 lines
5.5 KiB
Transact-SQL
-- ===================================================================================================================
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-- SQLI-IO-001: Høj læselatens på drev med datafiler
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-- ===================================================================================================================
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-- Regel-id: SQLI-IO-001
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-- Titel: Høj læselatens på drev med datafiler
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-- Alvor: Medium; High fra 50 ms.
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-- Versioner: SQL Server 2005 og nyere (drev/mount point fra sys.dm_os_volume_stats fra 2008 R2 SP1; før det udledt
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-- af filstien).
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--
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-- Hvad tjekkes, og hvorfor:
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-- Om læsninger fra datafilerne på et drev er langsomme.
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--
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-- Vurdering (sker i C# ud fra de indsamlede data, ikke i SQL'en, medmindre andet er nævnt):
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-- Forskellen mellem to målinger af sys.dm_io_virtual_file_stats (nulstilles ved genstart). Datafiler (ROWS)
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-- grupperes pr. drev: fund pr. drev, hvis der er mindst 1.000 læsninger i intervallet og gennemsnittet
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-- (io_stall_read_ms / num_of_reads) er mindst 20 ms. De tre langsomste filer står i målingerne.
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--
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-- Grænseværdier (konfigurationsnøgle i agentens appsettings.json og standardværdi):
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-- >= 1.000 læsninger; >= 20 ms; High fra 50 ms (fast i koden).
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--
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-- Rettigheder til agentens login (se db/permissions/grant-least-privilege.sql; [agent] = agentens login):
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-- GRANT VIEW SERVER STATE TO [agent]; -- SQL Server 2005-2019
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-- GRANT VIEW SERVER PERFORMANCE STATE TO [agent]; -- SQL Server 2022+ (erstatter VIEW SERVER STATE)
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-- GRANT VIEW SERVER SECURITY STATE TO [agent]; -- SQL Server 2022+
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-- GRANT VIEW ANY DEFINITION TO [agent]; -- metadata; giver IKKE adgang til data
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--
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-- Data kommer fra (collector, fil : medlemmer, interval):
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-- FileIoCollector
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-- Fil: src/SQLInsight.Collectors/Performance/FileIoCollector.cs
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-- Medlemmer: Db.StartTimeSql(version), FileIoCollector.SqlWithVolumes, FileIoCollector.Sql
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-- Interval: 5 min som standard (SQLInsight:CollectorIntervals:file-io)
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-- Delt script: SQL Scripts/_collectors/FileIoCollector.sql
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-- Regelkode: src/SQLInsight.Rules/Performance/ResourceRules.cs : DataFileReadLatencyRule.Evaluate
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--
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-- Read-only: Ja: kun SELECT samt SET-sessionsindstillinger. Intet ændrer data, indstillinger eller objekter.
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-- Kørsel: Kør i SSMS som agentens login (eller et login med samme rettigheder). Hver variant er sin egen batch
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-- (GO); en variant for en anden SQL Server-version end din kan fejle - det er forventet.
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-- Per-database-forespørgsler er vist for databasen msdb, som findes overalt: ret navnet til den
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-- database, du vil se.
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-- ===================================================================================================================
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-- -------------------------------------------------------------------------------------------------------------------
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-- Forbindelsen: Sessionsindstillinger, agenten sætter på hver forbindelse
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-- -------------------------------------------------------------------------------------------------------------------
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-- Variant: Alle versioner: sættes på hver forbindelse, agenten åbner
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-- Kilde: SqlConnectionFactory.SessionSettings
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-- Kode: src/SQLInsight.Connectivity/SqlConnectionFactory.cs : SqlConnectionFactory.SessionSettings
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SET LOCK_TIMEOUT 5000; SET DEADLOCK_PRIORITY LOW; SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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GO
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-- -------------------------------------------------------------------------------------------------------------------
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-- FileIoCollector: Kumulativ I/O og I/O-ventetid pr. data- og logfil, med drev/mount point. Reglerne bruger
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-- forskellen mellem to målinger.
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-- -------------------------------------------------------------------------------------------------------------------
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-- Variant: SQL Server 2008 og nyere: starttidspunkt
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-- Kilde: FileIoCollector.StartTimeSql(2008+)
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-- Kode: src/SQLInsight.Collectors/Db.cs : Db.StartTimeSql(version)
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SELECT (SELECT sqlserver_start_time FROM sys.dm_os_sys_info)
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GO
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-- Variant: SQL Server 2005: starttidspunkt
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-- Kilde: FileIoCollector.StartTimeSql(2005)
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-- Kode: src/SQLInsight.Collectors/Db.cs : Db.StartTimeSql(version)
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SELECT (SELECT create_date FROM sys.databases WHERE database_id = 2)
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GO
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-- Variant: SQL Server 2008 R2 SP1 og nyere (med drev/mount point)
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-- Kilde: FileIoCollector.SqlWithVolumes
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-- Kode: src/SQLInsight.Collectors/Performance/FileIoCollector.cs : FileIoCollector.SqlWithVolumes
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SELECT DB_NAME(vfs.database_id), vfs.file_id, mf.type_desc, mf.physical_name,
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vfs.num_of_reads, vfs.num_of_bytes_read, vfs.io_stall_read_ms,
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vfs.num_of_writes, vfs.num_of_bytes_written, vfs.io_stall_write_ms,
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vs.volume_mount_point
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FROM sys.dm_io_virtual_file_stats(NULL, NULL) vfs
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JOIN sys.master_files mf ON mf.database_id = vfs.database_id AND mf.file_id = vfs.file_id
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OUTER APPLY sys.dm_os_volume_stats(vfs.database_id, vfs.file_id) vs
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WHERE mf.type_desc IN (N'ROWS', N'LOG')
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GO
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-- Variant: SQL Server 2005 – 2008 R2 RTM
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-- Kilde: FileIoCollector.Sql
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-- Kode: src/SQLInsight.Collectors/Performance/FileIoCollector.cs : FileIoCollector.Sql
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SELECT DB_NAME(vfs.database_id), vfs.file_id, mf.type_desc, mf.physical_name,
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vfs.num_of_reads, vfs.num_of_bytes_read, vfs.io_stall_read_ms,
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vfs.num_of_writes, vfs.num_of_bytes_written, vfs.io_stall_write_ms,
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CAST(NULL AS nvarchar(260))
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FROM sys.dm_io_virtual_file_stats(NULL, NULL) vfs
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JOIN sys.master_files mf ON mf.database_id = vfs.database_id AND mf.file_id = vfs.file_id
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WHERE mf.type_desc IN (N'ROWS', N'LOG')
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GO
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