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Author SHA1 Message Date
20671bfb06 Wait type drill-down with active session sampling
A new light collector samples sys.dm_exec_requests every 15 seconds:
waiting user sessions (not the agent's own) by wait type, database and
statement (same key as top SQL), with blocking. Sampling-only cycles
reuse the last probe and skip rule evaluation. Stored in
insight.ActiveWaitSamples (migration 0010) for RawDays.

Wait types on the instance page and in the analysis link to
/instanser/{navn}/ventetyper/{type}: Danish explanation from a new
knowledge base (shared with the SQLI-WAIT rules, with Dynamics AX notes),
trend over time, the statements that waited with share and estimated
wait, a link to the full text (/instanser/{navn}/sql) and, for lock
waits, to blocking in the same window. SQL Server 2005 compatible.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-02 08:50:31 +02:00
ac13e3d826 Disk speed per drive: IOPS, MB/s and latency
- file-io records each file's drive: sys.dm_os_volume_stats from 2008 R2 SP1
  (new capability VolumeStats, mount points included), otherwise derived
  from the path (D:\..., \server\share\, / on Linux), so 2005 works too
- migration 0007: Volume and IntervalSeconds on FileIoSamples, and
  DiskHourly (rolled up by maintenance, kept HourlyDays)
- DiskActivity sums files per drive: read/write IOPS, MB/s and latency
  weighted by I/O count
- instance page: "Diskhastighed pr. drev" (table and MB/s + latency charts);
  time window analysis and its PDF: per drive against the same hours of the
  four previous weeks
- SQLI-IO-001/002 now report per drive (one finding when the storage is
  slow, the slowest files in the evidence) instead of per file

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-02 08:03:11 +02:00
554a6a71f5 Time window analysis: what happened between 03 and 04, as a page and PDF
SQLInsight Web: /instanser/{navn}/analyse?fra=&til= (datetime-local in the
display time zone; presets last hour, tonight 00-06, yesterday; at most 31
days). "Analysér et tidsrum" on the instance page, and blocking/deadlock
times there open the window half an hour around the event.

For the window: load (CPU, batch requests, compilations, PLE, connections,
memory grants pending, blocked processes) from 5-minute samples within
Retention:RawDays, otherwise hourly history (shown on the page); waits per
minute against the same hours and weekday of the previous 4 weeks, with
clear deviations marked; top SQL sortable by CPU, duration, reads and
executions; file I/O latency; blocking chains; deadlocks; findings active
in the window. An empty window explains the retention. "Hent som PDF"
renders the same via MigraDoc (/analyse.pdf).

Docs: docs/analyse.md (also on the community site); databehandling.md: the
statement text stays in the customer's repository and is never sent to
the hub.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-01 15:46:56 +02:00