Code, Exercise and Systems - Technology Performance Pulse

Building High-Quality Software

DZone

NOVEMBER 9, 2021

It sits at the very beginning of the process before the code is written and can save an immense amount of time down the road (of somebody spending tons of time just to get to a dead-end). I really like what one of the smartest people with whom I worked said: “A good design is a design where you can see the code”. Important note.

Software

Software Software Code Energy

Basis Path Testing in Software Testing

Testlodge

AUGUST 9, 2023

The tester established a baseline by selecting the most critical, common, or obvious path through the code selection. Steps to Performing Basis Path Testing The first step is to create a control flow graph for a specified code section. The second step is to select a baseline path through the code.

Testing

Testing Software Software C++

Missing Library: A pg_upgrade History

Percona

DECEMBER 29, 2022

While working as a DBA, we perform many regular tasks, and one of them is upgrading our database systems. In this blog post, I will show you a particular example I faced when working with an upgrade exercise using pg_upgrade. When working with the upgrade exercise, the goal was to move from PostgreSQL 11 to PostgreSQL 12.

C++

C++ Open Source Database Programming

Supercharging saga development

Particular Software

MARCH 28, 2022

Saga analyzers Sagas have a powerful API, but it’s limited by the confines of C#. You can create a class that is a lousy saga but is still perfectly valid C# code. With Roslyn analyzers and code fixes , we can now do a lot better and help guide you toward the pit of success. Let’s take a look at the new features. ??

Development

Development C++ Virtualization Metrics

GotW #97 Solution: Assertions (Difficulty: 4/10)

Sutter's Mill

JANUARY 11, 2021

Assertions have been a foundational tool for writing understandable computer code since we could write computer code… far older than C’s assert() macro, they go back to at least John von Neumann and Herman Goldstine (1947) and Alan Turing (1949). 1,2] How well do we understand them… exactly? GUIDELINE: Assert liberally. [3]

C++

C++ Programming Code Testing

BPF Theremin, Tetris, and Typewriters

Brendan Gregg

DECEMBER 21, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this.

C++

C++ Education Java AWS

BPF Theremin, Tetris, and Typewriters

Brendan Gregg

DECEMBER 21, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this.

C++

C++ Education Java AWS

PostgreSQL Parameters: Scope and Priority Users Should Know

Percona

AUGUST 30, 2023

If a PostgreSQL user wants to change these values, they need to recompile the PostgreSQL from the source code. This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. cat /usr/lib/systemd/system/postgresql-14.service. But another database might be an OLAP system.

Database

Database Servers Open Source Tuning

GotW #98 Solution: Assertion levels (Difficulty: 5/10)

Sutter's Mill

JANUARY 25, 2021

We want a way to enable checking for some assertions but not others in the same code, because we may not always be able to afford expensive checks. If you develop your own assertion system for in-house use, support enabling/disabling at least these kinds of assertions independently. [1] in production).

C++

C++ Programming Cache Testing

How to Assess MySQL Performance

HammerDB

APRIL 19, 2023

Instead, focus on understanding what the workloads exercise to help us determine how to best use them to aid our performance assessment. Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. Operating System: Ubuntu 22.04 Database: MySQL 8.0.31

Performance

Performance Benchmarking Cache Storage

Advent Calendars For Web Designers And Developers (December 2021 Edition)

Smashing Magazine

DECEMBER 2, 2021

Advent of Code. If you prefer a puzzle over an article, take a look at Advent of Code. C# Advent Calendar. It’s time for the fifth annual C# advent calendar that will feature two pieces of content every day. Code Security Advent Calendar. JavaAdvent on Twitter. Stoyan Stefanov on Twitter. LeanUXmas on Twitter.

Design

Design Development Programming Website

Fundamentals of table expressions, Part 3 – Derived tables, optimization considerations

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific.

C++

C++ Database Servers Code

GotW #101 Solution: Preconditions, Part 2 (Difficulty: 7/10)

Sutter's Mill

MARCH 25, 2021

Some of these are exercised by the “wrong order” permutations above, but even call sites that remember the right argument order can make mistakes about the actual values. But if the sight of these function signatures has had you pulling your hair and shouting “use the type system, Luke!” Consider using a class instead. is_reachable?

C++

C++ Design Code Systems

Fundamentals of table expressions, Part 3 ? Derived tables, optimization considerations

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific.

C++

C++ Database Servers Code

What, Exactly, Is Agile Management?

The Agile Manager

AUGUST 31, 2021

If we accept the fact that Agile is a value system and not a set of mechanical processes, it stands to reason that there must be something different about the norms and behaviors of Agile managers vis-a-vis traditional managers. They all had characteristics that are applicable to all management roles.

Metrics

Metrics Design Engineering C++

A persistent problem: managing pointers in NVM

The Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. PLOS’19.

Hardware

Hardware Programming Media Storage

Let's Write Some x86-64

Nick Desaulniers

APRIL 18, 2014

“It’s written in ones and zeroes - binary code. So a whole Babel of computer languages has been created for programmers: FORTRAN, BASIC, COBOL, LISP, Pascal, C, PROLOG, FORTH. This blog is meant for those who don’t know x86-64 assembly, but maybe know a little C, and are curious about code generation.

C++

C++ Programming Code Virtualization

SQL Mysteries: SQL Server Login Timeouts – A Debugging Story

SQL Server According to Bob

FEBRUARY 10, 2019

Several event types are included in the health session, some of which include predicates to remove noise from the system health session. The events logged in the system health show a non-yield beginning, then a login timeout occurring and the non-yield ending. – -c the control file. – sqlclr. clr_allocation_failure.

Servers

Servers Network Database Systems

Parse parameter default values using PowerShell – Part 1

SQL Performance

SEPTEMBER 25, 2020

Here’s the only item I’ve found that made it to the new feedback system.). a AS /* comment here because -- chaos */ int = 5 , @b AS varchar ( 64 ) = 'AS = /* BEGIN @a, int = 7 */ ' 'blat' '' , @c AS int = -- 12. So I wrote some PowerShell code to step through a procedure to see which other tokens were identified.

Code

Code C++ Database Servers

A peculiar throughput limitation on Intel’s Xeon Phi x200 (Knights Landing)

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. Instead, we found puzzle after puzzle. Instead, we found puzzle after puzzle.

Latency

Latency Hardware Code Testing

Technology Performance Pulse

Building High-Quality Software

Basis Path Testing in Software Testing

Trending Sources

Missing Library: A pg_upgrade History

Supercharging saga development

GotW #97 Solution: Assertions (Difficulty: 4/10)

BPF Theremin, Tetris, and Typewriters

BPF Theremin, Tetris, and Typewriters

PostgreSQL Parameters: Scope and Priority Users Should Know

GotW #98 Solution: Assertion levels (Difficulty: 5/10)

How to Assess MySQL Performance

Advent Calendars For Web Designers And Developers (December 2021 Edition)

Fundamentals of table expressions, Part 3 – Derived tables, optimization considerations

GotW #101 Solution: Preconditions, Part 2 (Difficulty: 7/10)

Fundamentals of table expressions, Part 3 ? Derived tables, optimization considerations

What, Exactly, Is Agile Management?

A persistent problem: managing pointers in NVM

Let's Write Some x86-64

SQL Mysteries: SQL Server Login Timeouts – A Debugging Story

Parse parameter default values using PowerShell – Part 1

A peculiar throughput limitation on Intel’s Xeon Phi x200 (Knights Landing)

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