These wait types all look like they’re hardware at first glance: writing to the transaction log, you can’t speed that up, can you? Waiting for network, it just is what it is, right? All of these have some tricky gotchas.
3.3 How to Fix Hardware-Sounding Waits (WRITELOG, HADR_SYNC_COMMIT, ASYNC_NETWORK_IO)
These wait types all look like they’re hardware at first glance: writing to the transaction log, you can’t speed that up, can you? Waiting for network, it just is what it is, right? All of these have some tricky gotchas.
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- 0.1 Prerequisites Before the Class
- 0.2 Download the Slides and Scripts
- 1.1 How to Measure Your SQL Server
- 1.2 How to Fix PAGEIOLATCH Waits
- 1.3 Lab 1: Fixing PAGEIOLATCH Waits
- 1.4 How to Fix CPU Waits (SOS_SCHEDULER_YIELD)
- 1.5 Lab 2: CPU-Intensive Workload
- 2.1 How to Fix Parallelism Waits (CXPACKET, CXCONSUMER, and LATCH_EX)
- 2.2 Plan Caching and Parameterization
- 2.3 Lab 3: Mixed Workload
- 2.4 How to Fix Blocking Waits (LCK%)
- 2.5 Lab 4 Setup: Planning the Work
- 3.1 How to Fix Worker Thread Waits (THREADPOOL)
- 3.2 How to Fix Query Memory Waits (RESOURCE_SEMAPHORE)
- 3.4 Lab 5 Setup: Architecture Changes
- 3.5 How to Triage Performance Emergencies
- 3.6 Lab 6 Setup: Emergency Triage
- Bonus: Abnormal Parallelism
- Bonus: Storytelling Time