63f23c4bbd
Some checks are pending
CI / Integration (mcr.microsoft.com/mssql/server:2017-latest) (push) Blocked by required conditions
CI / Integration (mcr.microsoft.com/mssql/server:2019-latest) (push) Blocked by required conditions
CI / Integration (mcr.microsoft.com/mssql/server:2022-latest) (push) Blocked by required conditions
CI / Integration (mcr.microsoft.com/mssql/server:2025-latest) (push) Blocked by required conditions
CI / Build og unit tests (push) Waiting to run
Collectors (SQL Server 2000+, version-specific SQL, least privilege): server, configuration, trace flags, databases (settings, backups in UTC, CHECKDB, VLFs, Query Store, files, tempdb), suspect pages, plan cache, wait stats and file I/O as deltas with restart/clear detection, performance counters, CPU from the scheduler monitor ring buffer, blocking (sleeping head blockers with open transactions), and deadlocks from system_health continuing from the last file offset. Rules: configuration (memory, MAXDOP per Microsoft NUMA guidance, cost threshold, ad hoc bloat, risky options, pending changes), databases (state, settings, backups, log backups, CHECKDB, suspect pages, VLFs, autogrowth, max size, Query Store, tempdb), waits (THREADPOOL, signal waits, locks, I/O, WRITELOG, parallelism, PAGELATCH), I/O latency, CPU, memory grants, blocking and deadlocks. Missing data makes a rule not measurable with the collector's reason. Integration tests run every collector as the least-privilege login and reproduce real blocking and a real deadlock; green on 2017 and 2022. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01E3EExwndy8Z22EK2Qpt6BK
10 lines
511 B
C#
10 lines
511 B
C#
namespace SQLInsight.Core.Data;
|
|
|
|
/// <summary>
|
|
/// A snapshot of cumulative counters and, from the second collection on, the change since the previous snapshot.
|
|
/// Counters reset when SQL Server restarts (or are cleared manually); the delta is then <see langword="null"/>
|
|
/// for one collection instead of producing negative or meaningless numbers.
|
|
/// </summary>
|
|
public sealed record CumulativeSample<TSnapshot, TDelta>(TSnapshot Snapshot, TDelta? Delta)
|
|
where TSnapshot : class
|
|
where TDelta : class;
|