Testlodge

MARCH 15, 2023

White box testing is a software testing approach based on an analysis of the internal structure of the component or system. Why is White Box Testing Performed? Testers perform white box testing for several reasons. Suppose developers perform unit testing before delivering code to testers.

Testing 83

Testing Testing Tools Java Programming 83

Percona

DECEMBER 7, 2023

Ensuring the security and resilience of your data hinges on having a robust backup strategy, and Percona XtraBackup (PXB), our open source backup solution for all versions of MySQL, is designed to make backups a seamless procedure without disrupting the performance of your server in a production environment. respectively.

C++ 94

C++ Open Source Servers Database 94

Dynatrace

APRIL 11, 2023

Today’s organizations face increasing pressure to keep their cloud-based applications performing and secure. As data from different corners of the enterprise proliferates, teams need a better way to bring data together to identify performance and security issues, minimize security risk, and drive greater business value.

Cloud 180

Cloud DevOps Open Source Retail 180

HammerDB

DECEMBER 5, 2020

compared to previous releases is that the workload names have changed from TPC-C and TPC-H to TPROC-C and TPROC-H respectively and therefore a key question is how are the v4.0 The simple answer is nothing, the workloads are exactly the same workloads derived from the TPC-C and TPC-H specifications and HammerDB v4.0

C++ 40

C++ Benchmarking Virtualization Open Source 40

Percona

MARCH 1, 2023

So you get the Umaluts, Cedils, and C-J-K Language support in your data, plus emojis. EXPLAIN without the ANALYSE gives you the server’s estimated analysis of the performance of your query. Adding ANALYSE causes the query to execute, and the numbers returned to report the real numbers of the query’s performance.

Servers 119

Servers Open Source Tuning C++ 119

Percona

SEPTEMBER 29, 2023

Let’s test this. To test this, create a new user, “app_user,” with only the privileges for DDL/DML. beta2) Running the test with following options: Number of threads: 10 Initializing random number generator from current time Initializing worker threads. CONNECTION_ADMIN is required from MySQL 8.0.31

C++ 96

C++ Servers Open Source Database 96

The Morning Paper

MAY 27, 2019

CheriABI: enforcing valid pointer provenance and minimizing pointer privilege in the POSIX C run-time environment Davis et al., That ‘reasonable’ performance cost is a 6.8% And this all has to work for whole-system executions, not just the C-language portion of user processes. ASPLOS’19. CHERI implementation.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Testsigma

APRIL 16, 2021

Android developers and testers perform mobile tests to deliver apps that drive a high user retention rate through a great user interface. While mobile automation tests are performed for Android, iOS, and Windows devices, in this post, we’ll dive into the UI frameworks for Android automation testing.

Testing 52

Testing Open Source Mobile Java 52

HammerDB

JULY 14, 2021

Also, the additional installation of the MySQL client libraries was needed when testing MariaDB. adds full support for MariaDB in both the GUI as shown: And in the CLI as a separate database from MySQL, this post describes a setup and test for MariaDB using the CLI on Linux as an example running the TPROC-C workload.

Testing 57

Testing C++ Virtualization Tuning 57

Percona

SEPTEMBER 19, 2023

Now, since backup speed and compactness are important for busy, important databases, Percona’s open source physical backup solution – Percona XtraBackup (PXB) , takes into account all these aspects and benefits MySQL world with its exceptional capabilities! Copyright (c) 2016, 2023, Oracle and/or its affiliates.

C++ 106

C++ Servers Storage Speed 106

Percona

MAY 1, 2023

In this blog post, we will delve into the world of PostgreSQL performance tuning and establish some basic guidelines for setting database parameters to enhance the performance of your PostgreSQL database, based on the workload. What is PostgreSQL performance tuning? Why is PostgreSQL performance tuning important?

Tuning 52

Tuning Efficiency Database Performance 52

Percona

OCTOBER 3, 2023

Transparent Huge Pages (THP) is a memory management feature in Linux operating systems that aims to enhance system performance. In this post, we will explore THP, its impact on database servers, and how to disable it for optimal performance and stability. What are Transparent Huge Pages? Try Percona Distribution for MySQL today!

Database 89

Database Servers Open Source C++ 89

Percona

JUNE 4, 2023

MariaDB is a popular SQL open source relational database management system that originated as a fork of MySQL after MySQL was acquired by Sun Microsystems in 2008 and later Oracle in 2010. It continues to be developed and maintained by the open source community and remains free to use under the GNU General Public License.

Open Source 52

Open Source Servers Storage Scalability 52

Testsigma

NOVEMBER 18, 2021

Over the course of two decades, he has helped Fortune 500 companies implement Agile testing practices. He has also authored a number of books on quality engineering and test automation. When I started my career, automation was used for automating UI-based regression testing. This changes how teams test for quality.

Engineering 104

Engineering Social Media DevOps Azure 104

Testsigma

FEBRUARY 3, 2021

People won’t even waste a chance to leave a negative review if they found a little error in the app, whether it’s performance glitches, a weak user interface, or a crash. So, it becomes the need of the hour to invest in mobile automation testing and avoid negative reviews and failures. What is Mobile Automation testing?

Mobile 52

Mobile Testing Testing Tools Open Source 52

DZone

JANUARY 3, 2020

and its 25 million lines of C code, described his struggling life with bugs this way: Spend weeks trying to understand the 20 different flags that interact in mysterious ways to cause a bug. Find out that his fix causes 100~1000 failed tests. Randomly pick some of the tests and dive into the code again.

C++ 162

C++ Code Database Testing 162

Percona

JUNE 20, 2023

In order to understand “segmentation fault,” it is a must to know the basic idea of segmentation and its implementation in C programming. foo" (itemId TEXT, last_update TIMESTAMP, PRIMARY KEY(itemId) ); DECLARE "test-cursor-crash" CURSOR WITH HOLD FOR SELECT di.itemId FROM "debug".downloaded_images 0ubuntu1~20.04.1)

Programming 85

Programming C++ Database Virtualization 85

Percona

FEBRUARY 10, 2023

Percona XtraBackup is an open source hot backup utility for MySQL-based servers. version is affected by this, as per my tests. and Percona XtraDB Cluster 5.7 , it uses the following locking command while performing MyISAM and other non-InnoDB tables: Executing LOCK TABLES FOR BACKUP. Only MySQL 5.7

Storage 102

Storage Engineering Open Source Servers 102

HammerDB

OCTOBER 18, 2018

An essential part of database performance testing is viewing the statistics generated by the database during the test and in 2009 HammerDB introduced automatic AWR snapshot generation for Oracle for the TPC-C test. However what if you want to review performance data in real time as the test is running?

Benchmarking 40

Benchmarking Monitoring Performance C++ 40

Percona

NOVEMBER 9, 2023

For generating load, we used pgbench with the following commands: shell> pgbench -i -s 100 sbtest shell> pgbench -c 8 -j 3 -T $((60*60*4)) -N -S -P 1 sbtest Creating a custom query collector Note: This step will not be needed with soon-to-come postgresql_exporter PMM versions! Let us know if you have any comments on it.

Monitoring 91

Monitoring Tuning Metrics Servers 91

Smashing Magazine

AUGUST 4, 2021

In this article, we’ll look at a React utility React.Children.toArray which lets us prepare the children prop for inspection and iteration, some of its shortcomings and how to overcome them — through a small open-source package, to keep our React code function the way it is deterministically supposed to behave, keeping performance intact.

Open Source 138

Open Source C++ Google Website 138

The Netflix TechBlog

MARCH 13, 2020

SVT-AV1: open-source AV1 encoder and decoder by Andrey Norkin , Joel Sole , Mariana Afonso , Kyle Swanson, Agata Opalach , Anush Moorthy , Anne Aaron SVT-AV1 is an open-source AV1 codec implementation hosted on GitHub [link] under a BSD + patent license.

Open Source 154

Open Source Efficiency C++ Speed 154

All Things Distributed

DECEMBER 1, 2016

I was joined by 32,000 James Bonds at the conference today from all around the world, and we introduced new services focused on accelerating this transformation across development, testing and operations, data and analytics, and computation itself. Transformation in Development, Testing, & Operations.

AWS 162

AWS Development Lambda Open Source 162

HammerDB

MAY 5, 2019

Note that the main developer of HammerDB is Intel employee (#IAMINTEL) however HammerDB is a personal open source project and HammerDB has no optimization whatsoever for a database running on any particular architecture. So to test I took a system with Skylake CPUs and all storage on a P4800X SSD. In the recent MySQL 8.0.16

Testing 48

Testing Tuning Latency Storage 48

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). its results if call sites call it in a way that violates the precondition the assertion is testing.

C++ 54

C++ Programming Lambda Code 54

Percona

JANUARY 25, 2023

During our tests, we observed that the above methods helped us identify the active databases; however, we sometimes had to use two or more ways to get the best result. sudo grep Schema: /var/lib/mysql/mysql-slow.log| awk -F' ' '{print $4 $5}' | sort | uniq -c 2717 Schema:mytestdb 123 Schema:percona 762238 Schema:sbtest Example for 8.0

Database 98

Database C++ Servers Open Source 98

The Netflix TechBlog

JUNE 4, 2019

However, the key insight here is that these caches are partially shared among the CPUs, which means that perfect performance isolation of co-hosted containers is not possible. Traditionally it has been the responsibility of the operating system’s task scheduler to mitigate this performance isolation problem. Linux to the rescue?

Cache 251

Cache Latency Airlines Logistics 251

Percona

MARCH 13, 2023

In my lab, we have two test nodes: PRIMARY: mysql57 (192.168.56.111) with Percona Server 5.7 On the replica mysql8 server, run: [root@mysql8 ~]# nc -l -p 2222 | unpigz -c | xbstream -x -C /var/lib/mysql The above command would be there to receive the backup until the stream copy was done. When we need to upgrade from MySQL 5.7

Servers 105

Servers C++ Storage Systems 105

Percona

AUGUST 31, 2018

In this blog, we will establish basic guidelines for setting PostgreSQL database parameters to improve database performance according to workload. Bear in mind that while optimizing PostgreSQL server configuration improves performance, a database developer must also be diligent when writing queries for the application. shared_buffer.

Tuning 57

Tuning Database Performance Benchmarking 57

The Netflix TechBlog

FEBRUARY 14, 2020

Through testing we have learned that with proper checks and human curation in place, assisted artwork candidates can perform on par with agency designed artwork. We use an open source workflow engine Netflix Conductor to run the orchestration. Identify areas of interest c. Image selection b.

Design 182

Design Open Source C++ Availability 182

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually.

Cache 100

Cache Database Virtualization Servers 100

Percona

APRIL 17, 2023

DD_SITE="datadoghq.eu" bash -c "$(curl -L [link] After execution, I can see the logs of Datadog agent installation and configuration and at the end: Installed: datadog-agent.x86_64 1:7.43.1-1 So the federated URL for exposing “*_up” metrics will be [link] I can test in on my PMM while being logged into it. 1 Complete!

Monitoring 72

Monitoring Metrics Database Open Source 72

Randon ASCII

MARCH 30, 2020

The Chromium build tools make it fairly easy to do these investigations (much easier than my last build-times post ), and since it’s open source anybody can replicate them. My test builds took up to 6.2 billion lines of source code. Wouldn’t it be nice if there was some way to test this? seconds per source file.

C++ 87

C++ Code Open Source Programming 87

Percona

DECEMBER 23, 2022

Both these open source tools have been saviors for DBAs for achieving high availability and performing restoration in ample ways. Let’s test the scenarios one by one: Reinitializing the Patroni cluster using pgBackRest (instead of pgBaseBackup). This is one of the most used backup tool used for PostgreSQL databases.

Open Source 62

Open Source Servers Database Availability 62

Brendan Gregg

OCTOBER 8, 2018

Created by Alastair Robertson , bpftrace is an open source high-level tracing front-end that lets you analyze systems in custom ways. Hit Ctrl-C to end.n"); } self int last[dev_t]; /* * Process io start */ io:genunix::start /self->last[args[0]->b_edev] != It's shaping up to be a DTrace version 2.0: Attaching 2 probes. ^C

C++ 110

C++ Virtualization Programming Latency 110

The Netflix TechBlog

OCTOBER 18, 2019

Contextual and Multi-armed Bandits enable faster and adaptive alternatives to traditional A/B Testing. Some simulation results and some online A/B test results were shared, demonstrating substantial lifts in the primary business metrics, while keeping the secondary metrics above preset guardrails. Sam described Ax and BoTorch?—?Ax

Infrastructure 126

Infrastructure Metrics Architecture Efficiency 126

Testlodge

AUGUST 9, 2023

Basis path testing in software testing is a white box method where the tester examines the codebase to identify all possible paths that could be taken by the user to achieve their aims. These paths are then written as test cases to ensure all the different identified scenarios in the main branches are covered.

Testing 75

Testing Software Software C++ 75