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When we ask SQL Server to change some aspect of a column's definition, it needs to check that the existing data is compatible with the new definition. Improvements in SQL Server2016. The subject of this post is the additional changes that are enabled for metadata-only from SQL Server2016 onward.
Prior to SQL Server2016 the trace flag –T8048 is used to upgrade (only) NUMA partitioned, CMemThread objects to CPU partitioned based objects. Keep in mind that the vast majority of CMemThread objects (SQL 2005, 2008, 2008 R2, 2012, 2014, Azure DB and 2016) are not partitioned. Instead the design of CMemThread was updated.
As indicated, SQL Server2016 added the use of SSE and AVX instructions in various code paths to improve performance. This post will outline SQL Server’s decisions around SSE/AVX or software algorithm use. Bob Dorr – Principal SoftwareEngineer SQL Server. Reference APIs such as: CryptDecrypt.
SQL Server2016 ‘It Just Runs Faster’ A bold statement that any SQL Server professional can stand behind with confidence. Try SQL Server2016 Today. The SQL Server Development team tasked several individuals with scalability improvements and real world testing patterns. – [link].
There is a MSVC, runtime library patch needed by SQL Server2016 and without the patch the SQL Server service can simply terminate (crash.) This may not produce stack dumps and the SQL Server error log often looks like it simply terminates (no logging of shutdown.).
SQL Server2016 changes the internal design to (CheckScanner), applying no lock semantics and a design similar to those used with In-Memory Optimized (Hekaton) objects, allowing DBCC operations to scale far better than previous releases. Ryan Stonecipher – Principle SQL ServerSoftwareEngineer. SQL Server.
Bob Ward and I worked with our SQL Server Tool developers (thanks David) to enable ‘Q uick XE Trace ’ capabilities. The feature is available in the latest SQL Server Management Studio (SSMS) release. Here is an example using the SQL Server SSMS 2017 against my SQL 2016server.
SQL Server2016 Service Pack 1 (all SKUs) , in combination with Windows Server2016 (All SKUs) or Windows 10 Client introduces non-volatile memory support for the tail of the log file (LDF) which can significantly increase transaction throughput. As the following diagram shows the SQL Server Log Cache is in memory.
To some of you SQL Server On Linux is old news from various announcements made a couple of months ago. Yes, SQL Server runs on Linux! It was Jan 2015, in my previous supportability role, that I started looking at SQL Server on Linux. I proceeded to install an Ubuntu VM and the internal build of SQL Server on Linux.
SQL Server, as outlined in the following post ( [link] ) adjusts to various processor configurations. I have received questions related to how SQL Server accomplishes the alignment on both bare metal and VM installations. SQL Server uses Windows APIs to determine the processors and package interactions. GetSystemInfo [link].
Last March I moved from 22 years in SQL Server support to the SQL Server development team, working on SQL Server on Linux project and reporting to Slava Oks. As Slava highlights in his recent blog post , he also contacted me in early 2015 to assist with supportability of SQL Server on Linux. There are no burning secrets.
In the early days of the personal computer, every computer manufacturer needed softwareengineers who could write low-level drivers that performed the work of reading and writing to memory boards, hard disks, and peripherals such as modems and printers. Schillace asks, What if traditional softwareengineering isnt fully relevant here?
The creation of the XTP, common access DLL requires SQL Server to generate C code, invoke the C compiler and save the DLL into the XTP directory. Bob Dorr – Principal SoftwareEngineer SQL Server. These are additional steps that a disk based table does not perform.
SQL Server relies on Forced-Unit-Access (Fua) I/O subsystem capabilities to provide data durability, detailed in the following documents: SQL Server 2000 I/O Basic and SQL Server I/O Basics, Chapter 2. Be sure to deploy SQL Server 2017 CU6 or newer for best data durability and performance results. “. The Back Story.
Note: SQL Server can be a client using a linked server, allowing SQL Server to become an APP and/or an RM ). The application then uses the SQL Server client (SQL Server ODBC for this example) to establish a TDS based connection to the target SQL Server (local or remote.). Local Host Name. The olehlp!
Rick is a softwareengineer on the Google Chrome team, “leading an effort to make the web just work for developers.” Follow him on Twitter @ RickByers and be sure to watch the video of his conversation at Chrome Dev Summit 2016 , where he discussed the ways Chrome is “improving predictability for developers.”
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