Speed Curve

MARCH 5, 2023

Site A Site B Site C Site D Observations 1. The poverty line emerges surprisingly quickly in some cases For example, Site C's performance poverty line starts at 400 milliseconds. For some sites (such as Site C), the difference was as little as 300 milliseconds. That's early! seconds to work toward.

Performance 121

Performance C++ Metrics Ecommerce 121

Sutter's Mill

MAY 1, 2023

Simple, mathematically safe, and efficient chained comparisons ( commit ) P0515 “Consistent comparison” (aka “spaceship”) was the first feature derived from this Cpp2 work to be adopted into the ISO Standard for C++, in C++20. Thank you again to everyone who helped land this Cpp2 feature in the ISO C++ Standard.

C++ 97

C++ Virtualization Lambda Code 97

Sutter's Mill

APRIL 30, 2012

I’m seeing many younger programmers picking up C++. The average age at C++ events over the past year has been declining rapidly as the audience sizes grow with more and younger people in addition to the C++ veterans. This kid seems pretty exceptional. Welcome, Wasik!

C++ 40

C++ Programming Media Games 40

Sutter's Mill

OCTOBER 16, 2011

As a tribute in honor of Dennis Ritchie’s passing , I’d like to invite you to share your thoughts in this post’s comments about your first C program – either the code if you remember it approximately, or a story about when you wrote it. After all, this was just a warm-up initial exercise for the course. Here’s mine. Never even seen it.

C++ 40

C++ Programming Code Development 40

Percona

DECEMBER 5, 2023

The scenario Service considerations In this exercise, we wanted to perform a major version upgrade from PostgreSQL v12.16 p 5432 -S slot_logical_upgrade -R -c fast -Xs -P -D /data/PG12_new -C 32610/32610 kB (100%), 1/1 tablespace 8. to PostgreSQL v15.4. Create a REPLICATION SLOT Create a replication slot to capture changes.

Database 75

Database Traffic C++ Servers 75

SQL Performance

JULY 1, 2021

name , [ Column ] = c. name , [ Data Type ] = TYPE_NAME ( c. system_type_id <> c. THEN N' (' + TYPE_NAME ( c. columns AS c INNER JOIN sys. objects AS o ON c. [ [ schema_id ] WHERE c. [ schema_id ] WHERE c. columns AS c INNER JOIN sys.

C++ 58

C++ Database Servers Performance 58

Sutter's Mill

FEBRUARY 17, 2020

C++ “move” semantics are simple, and unchanged since C++11. Move: What it is, and how to use it In C++, copying or moving from an object a to an object b sets b to a ’s original value. This post is an attempt to shed light on that situation. That’s it for what advanced users need to know. Yes, but don’t.

C++ 98

C++ Testing Design Strategy 98

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. You focus on your business logic. Let’s take a look at the new features. ?? In NServiceBus version 7.7, There was also no way to test the ConfigureHowToFindSaga method.

Development 52

Development C++ Virtualization Metrics 52

Sutter's Mill

JUNE 3, 2021

Briefly, what is the difference among: (a) undefined behavior Undefined behavior is what happens when your program tries to do something whose meaning is not defined at all in the C++ standard language or library (illegal code and/or data). You’ll get some valid result, but you won’t know what the result is until your code looks at it.

C++ 54

C++ Programming Lambda Code 54

Speed Curve

MARCH 5, 2023

Site A Site B Site C Site D Observations 1. The plateau emerges surprisingly quickly in some cases For example, Site C's performance plateau starts at 400 milliseconds. For some sites (such as Site C), the difference was as little as 300 milliseconds. That's early! seconds to work toward.

Performance 52

Performance C++ Metrics Ecommerce 52

Brendan Gregg

DECEMBER 21, 2019

Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this. This is the culmination of five years of work: the BPF kernel runtime, C support, LLVM and Clang support, the BCC front-end, and finally the bpftrace language. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this. This is the culmination of five years of work: the BPF kernel runtime, C support, LLVM and Clang support, the BCC front-end, and finally the bpftrace language. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python

C++ 52

C++ Education Java AWS 52

Sutter's Mill

JANUARY 25, 2021

In the post-C++20 contracts proposal at [3], this is partly captured by the proposed basic levels of default , audit , and axiom , roughly intended to represent “cheap,” “expensive,” and “impossible” respectively. P0542: Support for contract based programming in C++” (WG21 paper, June 2018). Dos Reis, J. Meredith, N. Myers, and B.

C++ 45

C++ Programming Cache Testing 45

Sutter's Mill

JANUARY 11, 2021

C++20 supports two main assertion facilities… For each one, briefly summarize how it works, when it is evaluated, and whether it is possible for the programmer to specify a message to be displayed if the assertion fails. C++ Coding Standards (Addison-Wesley, 2004). 5] For conditions, it’s up to us to make sure it’s true.) von Neumann.

C++ 58

C++ Programming Code Testing 58

J. Paul Reed

SEPTEMBER 24, 2018

Before doing the exercise, I start with a discussion with the group about what we’re going to do with the data it generates; there are generally two items to decide: What are we going to do with the data on the poster boards, that is: “Can we take pictures of it?” I am often asked “How can you even think of doing this exercise?”

DevOps 74

DevOps C++ Google Engineering 74

SQL Performance

OCTOBER 9, 2019

As an exercise, try solving this task with a pre-SQL Server 2017 compatible solution where you cannot use TRIM and TRANSLATE. Using a cursor, you would normally use code similar to the following: DECLARE @dbname AS sysname ; DECLARE C CURSOR FORWARD_ONLY STATIC READ_ONLY FOR. SELECT name FROM sys. do your thing here. */.

C++ 111

C++ Database Servers Code 111

HammerDB

JULY 16, 2021

with the TPROC-C workload on a system with 2 sockets of Intel Xeon 8280L that means we have 28 cores per socket, with 56 physical CPUs and 112 logical CPUs with Hyper-Threading. Plotting these data points enables us to understand the scalability of the database software being tested on that system. and MySQL 8.0.25 and MySQL 8.0.25

Virtualization 57

Virtualization Performance C++ Database 57

SQL Performance

APRIL 14, 2021

b FROM L1 AS A CROSS JOIN L1 AS B CROSS JOIN L1 AS C ) INSERT INTO dbo. This is actually a great learning exercise, and I suggest that you go through it before looking at the solution. Assuming that you gave the challenge to create a solution with an all-batch-mode plan a decent try, let’s proceed to the second exercise.

C++ 112

C++ Servers Testing Code 112

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. psql "host=localhost user=postgres options='-c synchronous_commit=off'" psql (14.8) This is the level at which decisions on whether to use data_checksums need to be taken. Type "help" for help.

Database 101

Database Servers Open Source Tuning 101

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. This all sounded very similar to HammerDB TPROC-C workload (we will look at HammerDB TPROC-H (OLAP) another time), so it is easy for any reader to think both workloads are about the same. and 8.0.32

Performance 54

Performance Benchmarking Cache Storage 54

Smashing Magazine

DECEMBER 2, 2021

C# Advent Calendar. It’s time for the fifth annual C# advent calendar that will feature two pieces of content every day. Anyone can contribute by sharing their blog posts, videos, articles or podcast episodes dedicated to C# development. Stoyan Stefanov on Twitter. Perfplanet calendar’s oldies but goodies. Advent of Cyber.

Design 107

Design Development Programming Website 107

SQL Performance

JUNE 10, 2020

Customers AS C WHERE EXISTS ( SELECT * FROM Sales. custid = C. For example, when the inner query joins tables with common column names, like in the following example: SELECT custid , companyname , orderdate , orderid , rownum FROM ( SELECT *, ROW_NUMBER ( ) OVER ( PARTITION BY C. Orders AS O ON C.

C++ 109

C++ Database Servers Code 109

The Agile Manager

NOVEMBER 30, 2020

These can be useful exercises, certainly to the business leaders who’ve got to find their customers or compete against rivals with slimmed down cost structures. Or, suppose that city C imposes putative taxes on companies employing a distributed workforce. It’s not unprecedented.

Airlines 52

Airlines Retail C++ Transportation 52

Tasktop

FEBRUARY 1, 2021

A Value Stream Architecture (VSA) diagram can provide that visual cue: A Value Stream Architecture exercise maps the flow of value-creating and -protecting software delivery work across your toolchain that underpins your product value stream. Measuring the Flow.

Logistics 52

Logistics Metrics Architecture Software 52

SQL Performance

JUNE 10, 2020

Customers AS C WHERE EXISTS ( SELECT * FROM Sales. custid = C. For example, when the inner query joins tables with common column names, like in the following example: SELECT custid , companyname , orderdate , orderid , rownum FROM ( SELECT *, ROW_NUMBER ( ) OVER ( PARTITION BY C. Orders AS O ON C.

C++ 93

C++ Database Servers Code 93

The Agile Manager

MAY 31, 2021

A value-generative investment is an exercise in deploying risk capital through IT in the pursuit of extraordinary benefit that yields competitive advantage. But many a C-level exec has been fired for cost overruns on utility investments. This does not describe legacy modernization.

C++ 52

C++ Efficiency Systems Technology 52

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 is (b) always better than (c), in other examples? c) A pointer that is not null void f( int* p ) [[pre( p != Consider using a class instead.

C++ 45

C++ Design Code Systems 45

O'Reilly

DECEMBER 12, 2023

This ruling in itself raises many questions: how much creativity is needed, and is that the same kind of creativity that an artist exercises with a paintbrush? If a human writes software to generate prompts that in turn generate an image, is that copyrightable? We have provenance.

Artificial Intelligence 104

Artificial Intelligence Media Google Processing 104

The Agile Manager

AUGUST 31, 2021

The obvious conclusions are (a) every individual drives to the collective output of the team; (b) every individual must strive to perform a high state of excellence; and (c) a team cannot maintain a level of performance any higher than the level of excellence achieved by its weakest performing member.

Metrics 52

Metrics Design Engineering C++ 52

Tasktop

OCTOBER 29, 2020

It’s the gym membership that forces you to exercise. VSM is a commitment to continuously measuring the time elapsed from customer request to customer delivery, and a commitment to optimizing every step of your process that can lead to shorter time-to-market while maintaining quality and happiness. .

Storage 52

Storage Speed C++ DevOps 52

ScaleOut Software

AUGUST 20, 2020

They make use of standard object-oriented concepts and languages (such as C#, Java, and JavaScript). This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment. Real-time digital twins are designed to be easy to develop and modify.

Cloud 52

Cloud Development Analytics Azure 52

ScaleOut Software

AUGUST 20, 2020

They make use of standard object-oriented concepts and languages (such as C#, Java, and JavaScript). This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment. Real-time digital twins are designed to be easy to develop and modify.

Cloud 52

Cloud Development Analytics Azure 52

The Morning Paper

DECEMBER 8, 2019

The Twizzler KVS (key-value store) is just 250 lines of C code, and uses one persistent object for the index structure, and a second one for the data. This is left as an exercise for the application developer at present. Cross-object pointers make this easy and natural. The FOT structure has some pros and cons. . What about security?

Hardware 56

Hardware Programming Media Storage 56

Nick Desaulniers

APRIL 18, 2014

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. But you never can tell exactly what the compiler is doing. Dan Gohman.

C++ 98

C++ Programming Code Virtualization 98

HammerDB

JANUARY 5, 2019

For example the following chart (with the actual data removed for the reasons described further in this post) shows the HammerDB TPC-C workload run against the same database on different processing architectures (grouped by colour) and speed with the most recent at the top.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

SQL Performance

SEPTEMBER 25, 2020

a AS /* comment here because -- chaos */ int = 5 , @b AS varchar ( 64 ) = 'AS = /* BEGIN @a, int = 7 */ ' 'blat' '' , @c AS int = -- 12. . -- AS BEGIN, @a int = 7 'blat' AS =. /* AS BEGIN, @a int = 7 'blat' AS = -- */. @a Really hard. CreateProcedureStatement. ProcedureReference. SchemaObjectName. Identifier. Identifier. Identifier.

Code 42

Code C++ Database Servers 42

SQL Server According to Bob

FEBRUARY 10, 2019

– -c the control file. I started with a cmd file script exercising the connection path. . – -S target server name forcing tcp protocol. – -Q with a query of — (comment only to do nothing). – -n controls the number of threads. – -r controls the number of loops for each thread.

Servers 40

Servers Network Database Systems 40