Dynatrace

AUGUST 5, 2022

In a distributed processing environment, message queuing is similar, although the speed and volume of messages are much greater. A producer creates the message, and a consumer processes it. Consumers store messages in a queue — usually in a buffer or on a storage medium — until they can process and delete them.

Monitoring 199

Monitoring Serverless Programming Speed 199

Scalegrid

FEBRUARY 8, 2024

Key Takeaways Distributed storage systems benefit organizations by enhancing data availability, fault tolerance, and system scalability, leading to cost savings from reduced hardware needs, energy consumption, and personnel. This process effectively duplicates essential parts of information to safeguard against potential loss.

Storage 130

Storage Systems Big Data Azure 130

Alex Podelko

OCTOBER 20, 2016

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. Another major trend is using multiple third-party components and services, which may be not easy to properly incorporate into testing. – Cloud.

Performance Testing 100

Performance Testing Architecture Testing Performance 100

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. I'd expect between 0.1%

Virtualization 40

Virtualization AWS Hardware Storage 40

Percona

JUNE 22, 2023

Defining high availability In general terms, high availability refers to the continuous operation of a system with little to no interruption to end users in the event of hardware or software failures, power outages, or other disruptions. Without enough infrastructure (physical or virtualized servers, networking, etc.),

Availability 110

Availability Database Open Source Hardware 110

Dynatrace

NOVEMBER 29, 2022

This AI-driven control plane further abstracts away the complexity of underlying webhook-based integrations, enabling IT to assemble end-to-end processes that manage related interdependencies regardless of the underlying technology. Hence there are far fewer chances for false positives. Register now!

Infrastructure 172

Infrastructure Code Cloud DevOps 172

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? To answer all these questions we need exhaustive mobile testing in place. Functional Testing.

Mobile 82

Mobile Testing Hardware C++ 82

Testsigma

JULY 3, 2021

If you’ve been performing on-premise testing in your organization, you know the rules already. But for the uninitiated, on-premise testing is a form of testing where testers perform tests on local machines, systems, or devices set up at an office. On-premise testing comes with a lot of responsibility.

Cloud 57

Cloud Testing Storage DevOps 57

Testsigma

FEBRUARY 5, 2021

Facebook’s mobile device testing lab at the Prineville Data Centre is equipped with Android and iOS devices that test Facebook applications and Instagram. Thousands of mobile devices are racked that are used for testing apps that would soon launch into the real world. The Need For Mobile Testing Lab. Automated Testing.

Mobile 52

Mobile Testing Hardware DevOps 52

The Morning Paper

DECEMBER 10, 2019

This is a companion paper to the " persistent problem " piece that we looked at earlier this week, going a little deeper into the object pointer representation choices and the mapping of a virtual object space into physical address spaces. Both abstractions must be implemented in a way that is efficient using existing hardware.

Hardware 52

Hardware Virtualization Operating System Programming 52

HammerDB

JUNE 27, 2022

It enables the user to measure database performance and make comparative judgements about database hardware and software. The Transaction Processing Performance Council (TPC) was founded to bring standards to database benchmarking, and the history of the TPC can be found here. Why HammerDB was developed. HammerDB development.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Percona

JUNE 12, 2023

Sure, you can get there with the right extensions and tools, but it can be a long, burdensome, and potentially expensive process. There cannot be any single-point-of-failure in the database environment, including physical or virtual hardware the database system relies on that would cause it to fail.

Architecture 99

Architecture Availability Open Source Healthcare 99

The Morning Paper

MAY 27, 2019

Last week we saw the benefits of rethinking memory and pointer models at the hardware level when it came to object storage and compression ( Zippads ). The protections are hardware implemented and cannot be forged in software. And this all has to work for whole-system executions, not just the C-language portion of user processes.

C++ 61

C++ Hardware Virtualization Benchmarking 61

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. This will slow this test a little.)

Speed 126

Speed Java AWS Virtualization 126

Percona

JULY 7, 2023

HA in PostgreSQL databases delivers virtually continuous availability, fault tolerance, and disaster recovery. Also, in general terms, a high availability PostgreSQL solution must cover four key areas: Infrastructure: This is the physical or virtual hardware database systems rely on to run. there cannot be high availability.

Availability 85

Availability Open Source Architecture Database 85

Percona

JUNE 20, 2023

.” Basic understanding In order to understand segmentation fault, it is necessary to understand memory management methods for processes. When a program leaves the memory, space becomes available; however, the OS may or may not be able to allocate vacant memory space to another program or process as it has some issues.

Programming 85

Programming C++ Database Virtualization 85

Dotcom-Montior

NOVEMBER 27, 2018

You’ve likely uttered the phrases “test early and often” and “shift left,” but do you always remind yourself of the importance of that phrase from the end user’s perspective? LoadView – Best Practices and Process. Distribute user load by geographical testing locations, simulating your customer base.

Performance Testing 40

Performance Testing Strategy Testing Performance 40

Dotcom-Montior

JUNE 19, 2017

Let’s face it – the ideal load test emulates real world traffic, yet most load testing software doesn’t come close. Held back by budget and infrastructure restrictions, some organizations have been forced to settle for load tests that paint an incomplete picture. Setting Up the Test. Creating a Script.

Performance Testing 40

Performance Testing Testing Performance Virtualization 40

HammerDB

APRIL 19, 2023

Regardless of whether the computing platform to be evaluated is on-prem, containerized, virtualized, or in the cloud, it is crucial to consider several essential factors. Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. 4.22 %usr 38.40 0.42 %sys 9.52

Performance 54

Performance Benchmarking Cache Storage 54

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. All the databases that HammerDB tests implement a form of MVCC (multi-version concurrency control). To benchmark a database we introduce the concept of a Virtual User. Top 10 Processes. and the following from TPROC-H. select top 100.

Programming 67

Programming Benchmarking Virtualization C++ 67

HammerDB

OCTOBER 23, 2023

Stored Procedures and Client SQL comparison To test the stored procedures and client implementations, we ran both workloads against a system equipped with Intel Xeon 8280L. The data shows a scripted automated workload running a number of back to back tests each time with an increasing number of virtual users.

Benchmarking 62

Benchmarking Database Network C++ 62

HammerDB

OCTOBER 18, 2019

Well its difficult to be entirely sure however the tests have all the characteristics of tests observed previously where the CPUs are running in powersave mode. So lets take an Ubuntu system with Platinum 8280 CPUs with the following Ubuntu OS, reboot and check the CPU configuration before running any tests.

Benchmarking 63

Benchmarking Performance Hardware C++ 63

Smashing Magazine

OCTOBER 27, 2021

The eye-tracking methodology can be extremely valuable for usability tests since it records the journey without interfering with the users’ natural behavior. Imagine, for example, that you test a prototype but discover that users are not interacting with the interface how they are supposed to. Mariana Macedo. 2021-10-27T10:00:00+00:00.

Mobile 111

Mobile Website Hardware Social Media 111

Dynatrace

OCTOBER 22, 2019

A scalable architecture needs to distribute work across many threads in order to facilitate all the CPUs of a physical or virtual machine. Ultimately, it leads to a state where your system won’t be able to process more data even if you add more hardware. Now let’s see how this works for the two use cases mentioned earlier.

Java 103

Java Scalability Hardware Architecture 103

Tasktop

OCTOBER 26, 2021

In software delivery tools, the data of interest exists as objects termed “artifacts”, which are work items like features, stories, tasks, test cases, defects and requirements. They are stored in the tools where the work gets done, like requirements tools, Agile planning tools and testing tools. Take the Requirement artifact type.

Hardware 52

Hardware Virtualization Testing Tools Speed 52

HammerDB

DECEMBER 5, 2020

A full understanding of why this is important requires some knowledge of the evolution of database hardware and software. Consequently we were getting very similar insights both faster and cheaper meaning we could test orders of magnitude more configurations in the same amount of time generating relative performance ratios.

C++ 40

C++ Benchmarking Virtualization Open Source 40

KeyCDN

JANUARY 23, 2020

These acronyms, which stand for real user monitoring and application performance monitoring, are software monitoring processes essential to measuring and evaluating applications in many different areas. This process should not be confused with synthetic monitoring which gathers data through synthetic transactions such as pinging a service.

Strategy 72

Strategy Metrics Monitoring Servers 72

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. This will slow this test a little.)

Speed 52

Speed Java AWS Virtualization 52

Dotcom-Montior

DECEMBER 8, 2021

In a different article, we talked about chaos engineering and how SRE teams proactively seek out and test for failures to prevent the worst from happening. Now that we have talked about what an incident is, incident management is the process by which teams resolve these events and bring systems and services back to normal operation.

Social Media 90

Social Media Monitoring Latency DevOps 90

HammerDB

OCTOBER 12, 2018

This post complements the previous best practice guides this time with the focus on MySQL and MariaDB and achieving top levels of performance with the HammerDB MySQL TPC-C test. As is also the case this limitation is at the database level (especially the storage engine) rather than the hardware level. hardware limits: 1000 MHz - 3.80

Best Practices 40

Best Practices Scalability Performance C++ 40

SQL Server According to Bob

DECEMBER 18, 2018

Testing shows that by using the Fua bit with the data, write request can reduce the I/O traffic by ~50% for a SQL Server, write-intensive workload. During my investigation, I traced, tested, reviewed, and instrumented the Linux kernel to understand the SQL Server I/O durability needs and associated impacts. Starting with the Linux 4.18

Servers 90

Servers Media Cache Storage 90

Particular Software

MARCH 11, 2019

In various steps towards putting the pizza in its box, the process could take longer depending on the pizza. Just as at the pizza shop, we might intuitively think that certain processes require in-order processing. To attempt to apply strict in-order processing would be to impose artificial limitations on our system.

Virtualization 69

Virtualization Scalability Servers Processing 69

Abhishek Tiwari

JULY 12, 2018

These data pipelines can process data at petabytes scale and to some extent, their success can be attributed to an army of engineers devoted to build and maintain internal data pipelines. Depending on frameworks, data processing units (a.k.a A data pipeline is a software which runs on hardware.

Latency 63

Latency Analytics Scalability Engineering 63

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. What about short-lived processes, like a service restarting in a loop? As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. This will slow this test a little.)

Speed 40

Speed Java AWS Virtualization 40

Percona

APRIL 17, 2023

Operating System (OS) settings Swappiness Swappiness is a Linux kernel setting that influences the behavior of the Virtual Memory manager when it needs to allocate a swap, ranging from 0-100. Without further ado, let’s start with the OS settings. A setting of 100 determines it to swap aggressively to disk. 25.84 - Total 21.04

Best Practices 52

Best Practices Design Tuning Database 52

Alex Russell

APRIL 29, 2021

Thanks to the Web Platform Tests project and wpt.fyi , we have the makings of an answer for the first: Tests that fail only in a given browser. wpt.fyi 's new Compat 2021 dashboard narrows this full range of tests to a subset chosen to represent the most painful compatibility bugs : Stable-channel Compat 2021 results over time.

Media 145

Media Games Education Engineering 145

HammerDB

JANUARY 5, 2019

Some opinions claim that “Benchmarks are meaningless”, “benchmarks are irrelevant” or “benchmarks are nothing like your real applications” However for others “Benchmarks matter,” as they “account for the processing architecture and speed, memory, storage subsystems and the database engine.”

Benchmarking 40

Benchmarking Database Social Media Scalability 40