HammerDB

OCTOBER 17, 2018

The official TPC-C test has a fixed number of users per warehouse and uses keying and thinking time so that the workload generated by each user is not intensive. By default each virtual user has the concept of a home warehouses where approximately 75% of its workload will take place.

C++ 40

C++ Testing Virtualization Cache 40

Dynatrace

NOVEMBER 5, 2019

Microsoft offers a wide variety of tools to monitor applications deployed within Microsoft Azure, and the Azure Monitor suite includes several integration points into the enterprise applications, including: VM agent – Collects logs and metrics from the guest OS of virtual machines. Available as an agent installer).

Azure 137

Azure Artificial Intelligence Metrics Innovation 137

SQL Performance

NOVEMBER 18, 2019

Migrating an on-premises SQL Server instance to an Azure Virtual Machine (VM) is a common method to migrate to Azure. Microsoft has helped simplify things by creating multiple types of virtual machines. Memory optimized – High memory-to-CPU ratio, relational database servers, medium to large caches, and in-memory analytics.

Azure 76

Azure Benchmarking Storage Virtualization 76

Randon ASCII

JULY 11, 2022

Downloads go through the cache, the cache is saved to disk, and saves to disk are slowed by (some) anti-virus software. I’d been testing on a virtual machine in a data center that I had access to, purely because this machine has an internet connection that runs at over 2 Gbps. I then did one final test.

Cache 105

Cache Energy Google Processing 105

KeyCDN

JANUARY 23, 2020

It’s also important for developers not to confuse real user data with real user testing. RUM gathers metrics from passive users while real user testing monitors testers who are actively looking for problems and vulnerabilities. Synthetic and real user data can be used together in digital experience monitoring (DEM).

Strategy 72

Strategy Metrics Monitoring Servers 72

The Netflix TechBlog

NOVEMBER 9, 2022

While we understand it’s virtually impossible to achieve a linear increase in throughput as the number of vCPUs grow, a near-linear increase is attainable. We also see much higher L1 cache activity combined with 4x higher count of MACHINE_CLEARS. Cache line is a concept similar to memory page?—? Thread 0’s cache in this example.

Hardware 363

Hardware Cache Performance Latency 363

Randon ASCII

OCTOBER 15, 2018

A long-standing correctness bug in the Windows file cache: Compiler bug? App Verifier causes your program to run more slowly, both because allocations are now more expensive and because the page-aligned allocations mean that your CPU’s cache is mostly neutered. During my tests to repro this behavior my disk was almost completely idle.

Processing 57

Processing Cache Programming Virtualization 57

Brendan Gregg

MARCH 16, 2024

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. And for leaf routines (which never establish a frame), this is a non-issue.

Java 145

Java Cache Google Hardware 145

Smashing Magazine

APRIL 11, 2022

web.dev’s main content is an image according to LCP (test ran on WebPageTest). We can use the preload attribute for the HTML link element to optimize loading performance by ensuring that the browser discovers the resource earlier, downloads it, and caches it. Large preview ). to display the content on the screen. Large preview ).

Media 70

Media Tuning Metrics Google 70

SQL Server According to Bob

DECEMBER 18, 2018

Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. 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. Starting with the Linux 4.18 4 Socket, TPCC. 9,108 – Old kernel.

Servers 90

Servers Media Cache Storage 90

Percona

APRIL 7, 2023

Here’s how the same test performed when running Percona Distribution for PostgreSQL 14 on these same servers: Queries: reads Queries: writes Queries: other Queries: total Transactions Latency (95th) MySQL (A) 1584986 1645000 245322 3475308 122277 20137.61 The throughput didn’t double but increased by 57%.

Tuning 135

Tuning Cache Servers Benchmarking 135

The Morning Paper

SEPTEMBER 24, 2020

Static analysis of Java enterprise applications: frameworks and caches, the elephants in the room , Antoniadis et al., This means for example that it can be applied to analyse source code repositories and pull requests, be used as an additional test in CI pipelines, and even give assistance in your IDE if it’s fast enough.

Java 80

Java Cache Benchmarking Programming 80

HammerDB

JUNE 27, 2022

Also, when testing a database with a De-Witt clause, it was then possible to produce your own results without having to rely on a particular vendor to publish results of interest. When testing database performance there are 2 distinct workloads, transactional or OLTP and analytic (data warehouse, decision support) or OLAP.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Dynatrace

SEPTEMBER 2, 2020

Create a virtual environment, and setup settings_secret.py (This is specific to this project, instructions in the README.md). Now the application is running, let’s test it! To use the SDK, there are a few steps that you need to follow: Import the SDK. Instrument key portions of your application. Web Requests entry points.

Monitoring 244

Monitoring Cache Open Source Database 244

Percona

SEPTEMBER 1, 2023

Testing and Validation : Thorough testing and validation are essential when working with triggers, especially in a production environment. Changes to triggers should be carefully reviewed and tested to ensure they do not introduce unintended consequences. for i in `seq 1 1 16`; do mysql test -e "SELECT * FROM tc_test"; done.

Cache 60

Cache Database Games Healthcare 60

Scalegrid

JULY 29, 2020

PgBouncer provides a virtual database that reports various useful statistics. Performance Testing. So, we pitted the two connection poolers head-to-head, using the standard pgbench tool, to see which one provides better transactions per second throughput through a benchmark test. Testing Conditions. Administration.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

Smashing Magazine

AUGUST 30, 2021

In previous articles from this series, we’ve covered auditing CSS codebase health and the incremental CSS refactoring strategy , testing, and maintenance. Part 2: CSS Strategy, Regression Testing And Maintenance. Caching Stylesheets. Caching static files is a useful optimization strategy. Adrian Bece. Removing Unused CSS.

Media 109

Media Performance Cache Strategy 109

Dynatrace

APRIL 21, 2022

Getting precise root cause analysis when dealing with several layers of virtualization in a containerized world. Missing caching layers. Some principles Microsoft provides to help organizations across this area include: Define and test availability targets such as service level agreements (SLAs) and SLOs.

Azure 188

Azure Monitoring Virtualization Metrics 188

Smashing Magazine

OCTOBER 31, 2023

It may even be something you do regularly with Lighthouse in Chrome DevTools, where testing is freely available and produces a very attractive-looking report. The linked-up explainer provides more details, from how scores are weighted to why scores may fluctuate between test runs. Can’t be perfect every time!

Speed 97

Speed Google Website Metrics 97

ScaleOut Software

MAY 15, 2014

Given all this, we thought it would be a good opportunity to see how we are doing relative to the competition, and in particular, relative to Microsoft’s AppFabric caching for Windows on-premise servers. Testing Scale-Up Performance. So our comments will be confined to what testing we felt was valuable and how well SOSS performed.

Cache 40

Cache Servers Network Design 40

Scalegrid

FEBRUARY 8, 2024

Handling a storage system spread across multiple physical servers introduces complexities such as unpredictability in behavior, difficulties with testing procedures, and an overall increase in administrative complexity due to the dispersed nature of data.

Storage 130

Storage Systems Big Data Azure 130

Percona

MAY 15, 2023

In both cases, when using virtually-synchronous replication, the process will require certification from each node and local (by node) write; as such, the number of writes is NOT distributed across multiple nodes but duplicated. Because the solutions still rely on writing in one single node that works as Primary.

Traffic 123

Traffic Scalability Database Servers 123

Tim Kadlec

JUNE 17, 2008

When a variable is global in scope, it could be being instantiated virtually anywhere making it tough to track down. function setTestObject( TestObject $test){. this->testObject = $test; }. }. Debugging code also becomes difficult. class Registry{. //… private $testObject; function getTestObject(){.

Cache 40

Cache Code Virtualization Testing 40

IO River

NOVEMBER 2, 2023

Narrow the final choice down to two providers, run a POC and A/B test them over the course of a few weeks to determine which one can best answer your requirements.‍‍2. Then, rigorous testing is necessary to ensure it functions properly. Evaluate how well each provider can meet your specific requirements and objectives.

Best Practices 52

Best Practices Strategy Traffic Virtualization 52

HammerDB

JULY 5, 2022

To do this, we are going to rewrite HammerDB in Python and run a series of tests on a 2 socket Intel(R) Xeon(R) Platinum 8280L server to see how and why Tcl is 700% faster than Python for database benchmarking*. Building the Test Schema and Timing Script. Vuser 1:Test complete, Taking end Transaction Count.

Benchmarking 98

Benchmarking Database C++ Virtualization 98

Brendan Gregg

FEBRUARY 9, 2018

Much of my testing was on Linux 4.14.11 This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. and 4.14.12 Linux 4.14.12-virtual DTLB and 4.4%

Performance 75

Performance Benchmarking Cache Tuning 75

IO River

NOVEMBER 2, 2023

Narrow the final choice down to two providers, run a POC and A/B test them over the course of a few weeks to determine which one can best answer your requirements.‍‍2. Then, rigorous testing is necessary to ensure it functions properly. Evaluate how well each provider can meet your specific requirements and objectives.

Best Practices 40

Best Practices Strategy Traffic Virtualization 40

Smashing Magazine

JULY 8, 2021

. +-- modules/ | +-- payout/ | +-- index.js | +-- assets/ | +-- Components/ | +-- PayOut.vue | +-- UserInfo.vue | +-- store/ | +-- index.js. | +-- actions.js | +-- mutations.js. | +-- Test/. There is also a test folder to carry out testing for this feature. This is the virtual node of Vue.js. Testing libraries.

Speed 133

Speed Processing Development Code 133

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. Make sure the drives are mounted with noatime and also if the drives are behind a RAID controller with appropriate battery-backed cache.

Best Practices 52

Best Practices Design Tuning Database 52

Rigor

NOVEMBER 7, 2019

Modern sites or apps don’t exist in one single, specific place; they are fragmented across many virtual and physical systems, in different locations, in a variety of ways: Applications can be multitiered , with different systems living in different (physical or virtual) servers or entirely different data centers. Credit: cpdos.org.

Monitoring 40

Monitoring Performance Cache Ecommerce 40

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

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. " Epheremal virtual addresses don’t cut it as the basis for persistent pointers.

Hardware 52

Hardware Virtualization Operating System Programming 52

HammerDB

NOVEMBER 5, 2018

If you are new to running Oracle, SQL Server, MySQL and PostgreSQL TPC-C workloads with HammerDB and have needed to investigate I/O performance the chances are that you have experienced waits on writing to the Redo, Transaction Log or WAL depending on the database you are testing. SQL> alter system flush buffer_cache; System altered.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Brendan Gregg

FEBRUARY 8, 2018

Much of my testing was on Linux 4.14.11 This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. and 4.14.12 Linux 4.14.12-virtual DTLB and 4.4%

Performance 40

Performance Benchmarking Cache Tuning 40

Enprowess

MARCH 10, 2022

Testing in Angular & React. Angular offers testing and debugging for a complete project with a single tool, while to do different types of testing, React needs a set of tools. React’s performance has dramatically improved after introducing the virtual DOM in the framework. Testing in Angular and React.

Development 52

Development Google Open Source Servers 52

Dotcom-Montior

JUNE 30, 2021

In fact, every country has its own laws and rules toward this virtual world. You may start your diagnosis from our free speed test tool , and no sign up is required. For this article, we ran a speed test for the TED website as the target website. First Visit. Repeat Visit. Number of Hosts Connected. First Visit. Repeat Visit.

Website 52

Website Monitoring Website Performance Performance 52

Percona

JUNE 22, 2023

High availability works through a combination of the following: No single point of failure (SPOF) : You must eliminate 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. Each node has its own cache buffer.)

Availability 107

Availability Database Open Source Hardware 107