> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Deadlocks (last 5m), Microsoft SQL Server KPI card, Vortex IQ Nerve Centre

> Number of Deadlocks/sec counter delta (sys.dm_os_performance_counters) - corroborated by system_health XEvent ring buffer.

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/mssql) · [Audit Profile](/nerve-centre/kpi-cards/mssql/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/mssql/sentiment)**

## At a glance

* **Category:** Concurrency
* **Type:** Key Metrics
* **Chart:** kpi
* **Format:** number
* **Time window:** 5m
* **Alert trigger:** >0

## Calculation

Number of Deadlocks/sec counter delta (sys.dm\_os\_performance\_counters) - corroborated by system\_health XEvent ring buffer.

## Known limitations

*Known limitations, FAQs, or reconciliation notes specific to this card. Replace this block when authored.*