Download SQL Server Query Performance Tuning, 4th Edition by Grant Fritchey PDF

Posted On April 11, 2017 at 5:56 am by / Comments Off on Download SQL Server Query Performance Tuning, 4th Edition by Grant Fritchey PDF

By Grant Fritchey

Queries no longer operating speedy sufficient? puzzling over concerning the in-memory database positive factors in 2014? uninterested in mobilephone calls from pissed off clients? provide Fritchey's publication SQL Server question functionality Tuning is the reply in your SQL Server question functionality difficulties. The publication is revised to hide the very most recent in functionality optimization gains and methods, in particular together with the newly-added, in-memory database good points previously identified less than the code identify undertaking Hekaton. This e-book presents the instruments you want to strategy your queries with functionality in brain.

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Processor Time % Processor Time should not be consistently high (greater than 80 percent). The effect of any sustained processor time greater than 90 percent is effectively the same as that of 100 percent. If % Processor Time is consistently high and disk and network counter values are low, your first priority must be to reduce the stress on the processor. Just remember that the numbers here are simply suggestions; people can disagree with these numbers for valid reasons. Use them as a starting point for evaluating your system, not as a specific recommendation.

The Total Server Memory (KB) counter value can be very high if the system is dedicated to SQL Server. If Total Server Memory (KB) is much less than Target Server Memory (KB), then either the SQL Server memory requirement is low, the max server memory configuration parameter of SQL Server is set at too low a value, or the system is in warm-up phase. The warm-up phase is the period after SQL Server is started when the database server is in the process of expanding its memory allocation dynamically as more data sets are accessed, bringing more data pages into memory.

Changing from a 32-Bit to a 64-Bit Processor Switching the physical server from a 32-bit processor to a 64-bit processor (and the attendant Windows Server software upgrade) radically changes the memory management capabilities of SQL Server. The limitations on SQL Server for memory go from 3GB to a limit of up to 8TB depending on the version of the operating system and the specific processor type. Prior to SQL Server 2012, it was possible to add up to 64GB of data cache to a SQL Server instance through the use of Address Windowing Extensions.

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