SOS_SCHEDULER_YIELD means the SQL Operating System (SOS) is waiting for a CPU scheduler to yield more time, but this wait is a little trickier than that. You have to look at not just the wait time, but the average wait time, because some SOS_SCHEDULER_YIELD waits can just mean a mostly-idle server running single-threaded queries. THREADPOOL…
3.5 – CPU Waits – SOS_SCHEDULER_YIELD and THREADPOOL (44m)
SOS_SCHEDULER_YIELD means the SQL Operating System (SOS) is waiting for a CPU scheduler to yield more time, but this wait is a little trickier than that. You have to look at not just the wait time, but the average wait time, because some SOS_SCHEDULER_YIELD waits can just mean a mostly-idle server running single-threaded queries. THREADPOOL…
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- 1.1 Skills Quiz – What’s Your Real Job Title (28m)
- 1.2 How to Think Like the Engine Part 1 (23m)
- 1.2 How to Think Like the Engine Part 2 (48m)
- 1.3 How to Think Like the Engine – Part 3 (46m)
- 1.4 Heaps and Clustered Indexes (41m)
- 1.5 Tuning Indexes with sp_BlitzIndex Part 1 (47m)
- 1.5 Tuning Indexes with sp_BlitzIndex Part 2 (9m)
- 1.6 Homework: Index Tuning Workshop Part 1 (12m)
- 1.7 Homework: Index Tuning Workshop Part 2 – Answers (60m)
- 2.1 Building Execution Plans Part 1 (25m)
- 2.1 Building Execution Plans Part 2 (22m)
- 2.2 Parameter Sniffing Part 1 (20m)
- 2.2 Parameter Sniffing Part 2 (34m)
- 2.3 Watch Brent Tune Queries Part 1 (56m)
- 2.3 Watch Brent Tune Queries Part 2 (8m)
- 2.4 Common Problems in Query Plans (16m)
- 2.5 Functions (17m)
- 2.6 Designing Indexes for Queries Part 1 (21m)
- 2.6 Designing Indexes for Queries Part 2 (26m)
- 2.6 Designing Indexes for Queries Part 3 (14m)
- 2.7 Homework – Query Design Challenge (6m)
- 2.7 Homework – Query Design Challenge Answers (46m)
- 3.1 How to Measure Your Server – Part 1 (24m)
- 3.1 How to Measure Your Server – Part 2: Wait Stats (17m)
- 3.1 How to Measure Your Server – Part 3: sp_BlitzFirst and Monitoring Software (24m)
- 3.1 How to Measure Your Server – Part 4: Wait Stats Q&A (10m)
- 3.2 CXPACKET (41m)
- 3.3 PAGEIOLATCH: Slow Reads from the Data File (57m)
- 3.4 LCK – Locking Snapshot RCSI Part 1 (39m)
- 3.4 LCK – Locking Snapshot RCSI Part 2 (29m)
- 3.6 – Hardware Waits – ASYNC_NETWORK_IO, RESOURCE_SEMAPHORE, and WRITELOG (25m)
- 4.1 Solving Waits with AlwaysOn Availability Groups (26m)
- 4.2 Solving Waits with Artisanal Indexes – Filters Views Computed Columns (32m)
- 4.3 Solving Waits with In-Memory OLTP (Hekaton) (43m)
- 4.4 VLDB Terabyteasaurus – Splitting Up Databases (33m)
- 4.5 How to Triage SQL Server Emergencies Part 1 (16m)
- 4.5 How to Triage SQL Server Emergencies Part 2 (44m)
- 4.5 How to Triage SQL Server Emergencies Part 3 (43m)
- 4.6 How to Write a Prescription (24m)
- 4.7 Recap and Q&A (58m)