Sql Server Query Performance Tuning, 4th Edition | Full HD

She reached into her bag and pulled out a weathered, heavy volume: .

The server room at OmniLogistics felt more like a sauna than a data center. Inside, Sarah sat hunched over her monitor, bathed in the frantic amber glow of "High CPU" alerts. SQL Server Query Performance Tuning, 4th Edition

The CPU line on the monitor, which had been a flat ceiling at 99%, plummeted to a cool 12%. The report that had timed out after ten minutes now populated in four seconds. She reached into her bag and pulled out

Using the book’s breakdown of , she realized the optimizer was choosing a massive Clustered Index Scan instead of a Seek. It was trying to read the entire history of the company just to find today's shipping manifests. The CPU line on the monitor, which had

"CXPACKET," she muttered, seeing the results of her diagnostic query. "Parallelism overhead."