Dynatrace

SEPTEMBER 15, 2020

If you want to see a more hands-on approach, I encourage you to watch the recording as Stefano did a live demo of Akamas’s integration with Dynatrace, showing how to minimize the footprint of a Java application with automated JVM tuning. Akamas is an on-premises product and simply needs one virtual machine to get started.

Performance 185

Performance Java Metrics Cloud 185

Dynatrace

JANUARY 13, 2021

We might have a synthetic test template for a particular application which needs to be deployed in dev, staging and production. By reusing the same test template with different values for the endpoint, we massively reduce the effort to create and maintain these tests. Stay tuned for an upcoming Performance Clinic !

Open Source 139

Open Source Code Monitoring Azure 139

Percona

DECEMBER 20, 2018

Linux OS Tuning for MySQL Database Performance. In this post we will review the most important Linux settings to adjust for performance tuning and optimization of a MySQL database server. We’ll note how some of the Linux parameter settings used OS tuning may vary according to different system types: physical, virtual or cloud.

Database 40

Database Tuning Performance AWS 40

Adrian Cockcroft

JUNE 21, 2022

I was mostly coding in C, tuning FORTRAN, and when I needed to do a lot of data analysis of benchmark results used the S-PLUS statistics language, that is the predecessor to R. Rich became co-author of the second edition of the Sun Performance Tuning book, to describe how it worked. He had it up and running on Wednesday.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Apica

SEPTEMBER 21, 2020

Our team has seen virtually every kind of situation, and our experts will be able to provide you with the best guidance. The account manager will talk you through the deployment options and be with you every step of the process, including monitoring and performance testing. Their job is to set you up for success, following these steps.

Monitoring 52

Monitoring Tuning Virtualization Cloud 52

Smashing Magazine

APRIL 11, 2022

web.dev’s main content is an image according to LCP (test ran on WebPageTest). However, developers with a deep understanding of the project may want to improve performance beyond that by doing some fine-tuning under the hood. We can run Lighthouse test to check the metrics and use this data for comparison. Large preview ).

Media 70

Media Tuning Metrics Google 70

Smashing Magazine

JUNE 3, 2022

How would we test to see if there is any difference between a good sans serif and a serif typeface with users? And today, we still have type in a digital context, but it travels through cables, wirelessly on smartphones, and in virtual reality glasses in 3D. So scientific tests for typeface legibility are often full of flaws.

Performance 111

Performance Design Best Practices Testing 111

Brendan Gregg

OCTOBER 8, 2018

more capable, and built from the ground up for the modern era of the eBPF virtual machine. eBPF was created by Alexei Starovoitov while at PLUMgrid (he's now at Facebook) as a generic in-kernel virtual machine, with software defined networks as the primary use case. It's shaping up to be a DTrace version 2.0: eBPF does more.

C++ 110

C++ Virtualization Programming Latency 110

Percona

FEBRUARY 27, 2019

this time I decided to test very simple read-only CPU intensive workloads, when all data fits memory. My Testing Setup. Processors | physical = 2, cores = 28, virtual = 56, hyperthreading = yes. Processors | physical = 2, cores = 28, virtual = 56, hyperthreading = yes. in the variety of workloads that I am testing.

Performance 83

Performance Virtualization Testing Tuning 83

Abhishek Tiwari

JULY 12, 2018

If tuned for performance, there is a good change reliability is compromised - and vice versa. In some cases, this can be enhanced by combining data virtualization techniques with microservices architecture. Testing Hell Testing and quality assurance with data pipeline is a nightmare.

Latency 63

Latency Analytics Scalability Engineering 63

Brendan Gregg

OCTOBER 7, 2018

more capable, and built from the ground up for the modern era of the eBPF virtual machine. eBPF was created by Alexei Starovoitov while at PLUMgrid (he's now at Facebook) as a generic in-kernel virtual machine, with software defined networks as the primary use case. It's shaping up to be a DTrace version 2.0: eBPF does more.

C++ 40

C++ Virtualization Programming Latency 40

Percona

APRIL 7, 2023

If we were to select the most important MySQL setting, if we were given a freshly installed MySQL or Percona Server for MySQL and could only tune a single MySQL variable, which one would it be? To be fair, that is also true with PostgreSQL; it hasn’t been tuned either, and it, too, can also perform much better.

Tuning 135

Tuning Cache Servers Benchmarking 135

Percona

AUGUST 27, 2018

Essentially, you can assign a thread to a specific virtual CPU. assigning to a specific CPU) is a manageable resource, represented by the concept of “virtual CPU” as a term that includes CPU cores, hyperthreads, hardware threads, and so forth. MySQL determines, at startup, how many virtual CPUs are available. Will this work?

Tuning 44

Tuning Virtualization Testing Servers 44

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). There's also a test and println() in the loop to, hopefully, convince the compiler not to optimize-out an otherwise empty loop. This will slow this test a little.)

Speed 126

Speed Java AWS Virtualization 126

The Netflix TechBlog

AUGUST 17, 2023

From our testing on promotional assets , we know which of these assets have performed well and which ones haven’t. Finding moments from a virtual setting in the title or the actual filming location required a visual scan of all episodes of a title. Each artwork tells a story about the title it represents.

Media 169

Media Scalability Architecture Strategy 169

Dynatrace

JULY 6, 2022

Virtualization has revolutionized system administration by making it possible for software to manage systems, storage, and networks. Design, implement, and tune effective SLOs. SREs should agree upon SLO dashboards, error tolerances, remediation plans, and alerting tactics and test them in advance.

Best Practices 187

Best Practices Open Source Tuning Infrastructure 187

Dynatrace

NOVEMBER 10, 2022

Organizations can shift development, testing, and delivery as needed between teams and geographies. First, teams must build and test the entire application as a unit, which hampers developer productivity. Teams can assemble prebuilt components without needing long testing times. Deployment is fast and global.

Cloud 162

Cloud Architecture Serverless Infrastructure 162

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. There is a key distinction here between parallelism and concurrency.

Programming 67

Programming Benchmarking Virtualization C++ 67

O'Reilly

NOVEMBER 28, 2023

Unexpected outcomes, security, safety, fairness and bias, and privacy are the biggest risks for which adopters are testing. Even with cloud-based foundation models like GPT-4, which eliminate the need to develop your own model or provide your own infrastructure, fine-tuning a model for any particular use case is still a major undertaking.

Open Source 108

Open Source Artificial Intelligence Google Infrastructure 108

The Netflix TechBlog

AUGUST 29, 2023

The abstractions that Eureka provides for this are Virtual IPs (VIPs) for insecure communication, and Secure VIPs (SVIPs) for secure. This is the first in a series of posts on our journey to service mesh, so stay tuned. Compared to a decade ago, we now support more features, in more languages, in more clients.

Traffic 220

Traffic Latency Cloud C++ 220

Dynatrace

APRIL 8, 2021

If you haven’t done so already, providing a testing environment for developers to easily test their functions with AWS solves most of these challenges and makes the required tooling similar to what’s required for operating microservices. So, stay tuned for more blog posts and announcements. Are you new to Dynatrace?

Lambda 221

Lambda AWS Serverless Monitoring 221

Percona

APRIL 17, 2023

The main objective of this post is to share my experience over the past years tuning MongoDB and centralize the diverse sources that I crossed in this journey in a unique place. systemctl stop tuned $ systemctl disable tuned Dirty ratio The dirty_ratio is the percentage of total system memory that can hold dirty pages.

Best Practices 52

Best Practices Design Tuning Database 52

Scalegrid

OCTOBER 17, 2019

These sit between the database and the clients, sometimes on a seperate server (physical or virtual) and sometimes on the same box, and create a pool that clients can connect to. It creates yet another component that must be maintained, fine tuned for your workload, security patched often, and upgraded as required.

Architecture 200

Architecture Database Latency Servers 200

Dynatrace

APRIL 8, 2021

If you haven’t done so already, providing a testing environment for developers to easily test their functions with AWS solves most of these challenges and makes the required tooling similar to what’s required for operating microservices. So, stay tuned for more blog posts and announcements. Are you new to Dynatrace?

Lambda 183

Lambda AWS Serverless Monitoring 183

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). There's also a test and println() in the loop to, hopefully, convince the compiler not to optimize-out an otherwise empty loop. This will slow this test a little.)

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Much of my testing was on Linux 4.14.11 Also microbenchmarks, which often stress-test the system, will suffer the largest losses. and 4.14.12 Linux 4.14.12-virtual DTLB and 4.4%

Performance 75

Performance Benchmarking Cache Tuning 75

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

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. Based on this, you can go back and test different ways to write this code. Now let’s see how this works for the two use cases mentioned earlier. Use case #1: Identify scalability issues.

Java 103

Java Scalability Hardware Architecture 103

Baron Schwartz

MAY 5, 2019

In my testing it’s easy to set up, works well, and sounds great. The picture above shows you virtually everything there is to know about the Mighty Vibe. It’s not the default, and Mighty warns that it might not work as well with Bluetooth, but I wanted to test the quality of the sound.

Tuning 45

Tuning Virtualization Mobile Network 45

Brendan Gregg

SEPTEMBER 5, 2017

We're now testing container hosts in production on btrfs, instead of ZFS. I've suggested adding a command to docker to make listing at least the top-level PIDs in containers easier. ## Virtual Machines The two main technologies on Linux are Xen and KVM (and there's Bhyve for BSD).

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Much of my testing was on Linux 4.14.11 Also microbenchmarks, which often stress-test the system, will suffer the largest losses. and 4.14.12 Linux 4.14.12-virtual DTLB and 4.4%

Performance 40

Performance Benchmarking Cache Tuning 40

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. InnoDB is the storage engine that will deliver the best OLTP throughput and should be chosen for this test. . HammerDB difference from Sysbench.

Best Practices 40

Best Practices Scalability Performance C++ 40

HammerDB

JANUARY 5, 2019

If you change something and re-run the same test the difference in the results can be attributed to the changes you made. Consequently over time you have a reference point “set in stone” from which future changes can be measured by running the same test. Scalability. can you be sure that it scales?

Benchmarking 40

Benchmarking Database Social Media Scalability 40

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. rc3-custom x86_64).

Benchmarking 63

Benchmarking Performance Hardware C++ 63

Smashing Magazine

OCTOBER 22, 2021

The idea is simple : players steer virtual toy cars in a top-down arena that resembles a foosball table. As flawed as the implementation was, it was sufficiently playable to invite friends for a first test drive. I spent a considerable amount of time fine-tuning physics properties and constraints. Creating A Schema. and Matter.js

Games 95

Games Servers Database Virtualization 95

SQL Performance

JUNE 21, 2019

Managed Instance sets a max server memory value based on the deployed tier, however when I tested resizing the environment, the max memory value was not dynamically changed. If you are mostly virtualized on machines with 8 or fewer logical processors with a default MAXDOP, you're probably in OK. SQL Server Agent Alerts.

Servers 49

Servers Azure Hardware Database 49

Smashing Magazine

FEBRUARY 2, 2022

We can code-split virtually any component in our project. If some widely-used component turns out a good candidate for code-splitting and it is used across 50 other components, the scope of the pull request and changes would be large and difficult to test if no automated test exists. Large preview ). Project components.

Code 89

Code Performance Network Website 89