SQL Server According to Bob

DECEMBER 18, 2018

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. “.

Servers 90

Servers Media Cache Storage 90

Dynatrace

APRIL 2, 2020

Performance has always mattered. With sniffers, network performance engineers were ultimately able to relate wire data performance to what business owners expected from the networks they financed. The network performance engineer who managed the sniffer was the guru. The DC RUM wave. Technology developments come in waves.

Network 166

Network Traffic Monitoring Java 166

SQL Server Performance

NOVEMBER 10, 2017

Recently we started experiencing a very strange issue in our production reporting environment where the Re-indexing and Update Statistics operation suddenly began taking more than 2 days to complete and was thus causing blockage in the database which in turn caused impairment in application performance.

Tuning 40

Tuning Performance Servers Database 40

SQL Performance

MARCH 29, 2022

When SQL Server applies simple parameterization to an ad-hoc statement, it makes a guess about the data type of the replacement parameter. For the time being, let’s look at some examples using the Stack Overflow 2010 database on SQL Server 2019 CU 14. The bigint type isn’t used for server-side parameterization. ) ; GO.

Cache 90

Cache Servers Database Testing 90

SQL Performance

JANUARY 23, 2020

"Waitstats helps us identify performance-related counters. But waits information by itself isn't enough to accurately diagnose performance problems. The queues component of our methodology comes from Performance Monitor counters, which provide a view of system performance from a resource standpoint.".

Tuning 115

Tuning Servers Monitoring Hardware 115

SQL Server According to Bob

JUNE 22, 2016

Prior to SQL Server 2016 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. Trace flag –T8048 longer exists in SQL Server 2016.

Servers 40

Servers Azure Software Engineering Design 40

SQL Performance

MARCH 30, 2021

This five-part series takes a deep dive into the way SQL Server row mode parallel plans start up. It includes initializing each operator, and adding hidden profilers to collect runtime performance data like actual row count and elapsed time. See Myth: SQL Server Caches a Serial Plan with every Parallel Plan for details.

Cache 98

Cache Servers Operating System Processing 98

Brendan Gregg

MARCH 16, 2024

I'm sure this delivered large performance improvements and I wouldn't try arguing against it. 2005-2023: The winter of broken profilers However, the change was then applied to x86-64 (64-bit) as well, which had sixteen registers and didn't benefit so much from a seventeenth. But I'd rather the cost be zero, of course!

Java 145

Java Cache Google Hardware 145

SQL Performance

FEBRUARY 22, 2021

I would like to share a couple of recent examples that help illustrate how using deprecated SQL Server features continues to bite us. The system table sys.sysprocesses was replaced way back in SQL Server 2005 by a set of dynamic management views (DMVs), most notably sys.dm_exec_requests , sys.dm_exec_sessions , and sys.dm_exec_connections.

Latency 57

Latency Servers Monitoring Systems 57

SQL Performance

JULY 1, 2021

There was the case where a colleague constantly promoted the deprecated backward compatibility view sys.sysprocesses instead of newer dynamic management views (DMVs), and another case where a different colleague took down a production server using SQL Server Profiler. The operation must be performed offline. CREATE TABLE dbo.

C++ 58

C++ Database Servers Performance 58

ScaleOut Software

JUNE 22, 2020

The pace of these changes has made it challenging for server-based infrastructures to manage fast-growing populations of users and data sources while maintaining fast response times. They transparently distribute stored objects across the cluster’s servers and ensure that data is not lost if a server or network component fails.

Ecommerce 52

Ecommerce Cache Scalability IoT 52

ScaleOut Software

JUNE 22, 2020

The pace of these changes has made it challenging for server-based infrastructures to manage fast-growing populations of users and data sources while maintaining fast response times. They transparently distribute stored objects across the cluster’s servers and ensure that data is not lost if a server or network component fails.

Ecommerce 52

Ecommerce Cache Scalability IoT 52

SQL Performance

MARCH 22, 2022

Both target performance and efficiency for workloads frequently submitting simple statements. It's almost always better to explicitly parameterize statements, rather than relying on the server to do it. In any event, it would be an unusual workload that does not contain at least some parameterized statements server-side.

Cache 61

Cache Servers Database Code 61

Smashing Magazine

MAY 17, 2021

Performance is a core feature of our company, Instant Domain Search —it’s in the name. I founded Instant Domain Search in 2005 and kept it as a side-hustle while I worked on a Y Combinator company (Snipshot, W06), before working as a software engineer at Facebook. Beau Hartshorne. 2021-05-17T11:30:00+00:00. 2021-05-17T14:40:42+00:00.

Google 93

Google Analytics Serverless Metrics 93

SQL Performance

OCTOBER 9, 2019

The EOMONTH function was introduced in SQL Server 2012. Many people are not aware that SQL Server 2017 introduced a new function called TRANSLATE that simplifies such replacements a great deal. SQL Server 2017 introduced support for the function TRIM. SQL Server 2012 introduced the function CONCAT. That's pretty neat!

C++ 111

C++ Database Servers Code 111

SQL Server According to Bob

JUNE 3, 2016

SQL Server 2016 ‘It Just Runs Faster’ A bold statement that any SQL Server professional can stand behind with confidence. Try SQL Server 2016 Today. The SQL Server Development team tasked several individuals with scalability improvements and real world testing patterns. – [link]. Follow-up.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

KeyCDN

MARCH 28, 2019

Features Simple and fast routing engine Comes with its own CLI Powerful template system (Blade) Good documentation CakePHP CakePHP is one of the first PHP frameworks to be released back in 2005. Many popular server-side and full stack frameworks use Express such as Feathers, KeystoneJS, MEAN, Sails, and more.

Programming 77

Programming Website Scalability Design 77

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance.

Virtualization 111

Virtualization AWS Hardware Storage 111

SQL Performance

AUGUST 12, 2020

You can find it in the documentation of Microsoft SQL Server and Azure SQL Database. T-SQL supports it starting with SQL Server 2005. Furthermore, it’s important not to confuse the use of table expressions and temporary tables, but that’s a performance related discussion that I will address in a future article.

C++ 140

C++ Code Design Database 140

Brendan Gregg

AUGUST 8, 2017

If they are higher than your CPU count, then you might have a performance problem (it depends). The oldest change in the entire Linux repo dates back to 2005, when Linus imported Linux 2.6.12-rc2, Thankfully, I found some older linux-devel mailing list archives, rescued from server backups, often stored as tarballs of digests.

Latency 111

Latency Metrics C++ Systems 111

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance.

Virtualization 40

Virtualization AWS Hardware Storage 40