Dynatrace

SEPTEMBER 25, 2019

It provides the bottom line of Citrix virtual application and desktop (formerly XenApp and XenDesktop) infrastructure performance. Dynatrace OneAgent monitors all Windows hosts that comprise the Citrix landscape, including your virtualization stack, tracking basic infrastructure performance and usage. Citrix VDA. SAP server.

Latency 116

Latency Performance Virtualization Infrastructure 116

Testsigma

AUGUST 24, 2020

Continuous Testing is the process of testing at all stages of software development – one after the another- without any human intervention. Continuous Testing is key to faster delivery of Agile products to the market. But the path to achieving Continuous Testing has its own challenges, most common of which are mentioned below.

Testing 69

Testing Open Source Scalability Latency 69

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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). This will slow this test a little.)

Speed 126

Speed Java AWS Virtualization 126

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. Our tests show that even a small number of clients can significantly benefit from using a connection pooler. A middleware becomes a single point of failure.

Architecture 200

Architecture Database Latency Servers 200

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. Then, rigorous testing is necessary to ensure it functions properly. Traffic can then be safely and gradually rerouted.

Best Practices 52

Best Practices Strategy Traffic Virtualization 52

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

Scalegrid

APRIL 16, 2020

A vast majority of the features are the same, outside of these advanced features available through the BYOC model: Virtual Private Clouds / Virtual Networks. Amazon Virtual Private Clouds (VPC) and Azure Virtual Networks (VNET) are private, isolated sections of the cloud infrastructure where you can launch resources.

Cloud 242

Cloud Azure AWS Database 242

Dynatrace

APRIL 26, 2022

STM generates traffic that replicates the typical path or behavior of a user on a network to measure performance for example, response times, availability, packet loss, latency, jitter, and other variables). PC, smartphone, server) or virtual (virtual machines, cloud gateways). Endpoints can be physical (i.e.,

Monitoring 203

Monitoring Social Media IoT Metrics 203

Testsigma

DECEMBER 12, 2020

This results in cross-browser compatibility issues and testing them out is cross-browser testing. But just like any other testing paradigm, cross-browser testing is full of challenges and we will explore them in this post along with some arrangements that can help smoothen the ride a bit! What is Cross-Browser Testing?

Testing 53

Testing Operating System Website Latency 53

IO River

NOVEMBER 2, 2023

A CDN (Content Delivery Network) is a network of geographically distributed servers that brings web content closer to where end users are located, to ensure high availability, optimized performance and low latency. Then, rigorous testing is necessary to ensure it functions properly. Traffic can then be safely and gradually rerouted.

Best Practices 40

Best Practices Strategy Traffic Virtualization 40

HammerDB

MAY 5, 2019

Fortunately the HammerDB TPC-C/OLTP workload intentionally has a great deal of contention between threads and is therefore ideal for testing spin-locks. ” and “as the PAUSE latency has been increased significantly, workloads that are sensitive to PAUSE latency will suffer some performance loss.” linux-glibc2.12-x86_64/data

Testing 48

Testing Tuning Latency Storage 48

Percona

MARCH 13, 2023

There is a section in our Documentation ( Introduction to Serverless PostgreSQL ) and a short overview of the primary components: Page Server The storage server with the primary goal of storing all data pages and WAL records Safe Keeper A component to store WAL records in memory (to reduce latency).

Serverless 118

Serverless C++ Storage Latency 118

Scalegrid

JANUARY 8, 2024

By enabling direct execution of AI algorithms on edge devices, edge computing allows for real-time processing, reduced latency, and offloading processing tasks from the cloud. Another significant trend is the expansion of edge computing in AI cloud computing.

Artificial Intelligence 147

Artificial Intelligence Cloud Scalability Analytics 147

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 99

Speed Google Website Metrics 99

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 We have long been surfing the virtualization wave (to keep it broad).

Tuning 135

Tuning Cache Servers Benchmarking 135

Apica

JULY 1, 2022

We provide you with templated scripts that are ready to go out of the box and can be reused in testing and production environments. All you need to do is point the script to the location of your video assets for testing, and you’re ready to go with no need for specialized training. It’s as close as you can get to playing the content.

Internet 52

Internet Internet Latency Virtualization 52

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. 3.33 |__mariadbd.

Benchmarking 62

Benchmarking Database Network C++ 62

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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). This will slow this test a little.)

Speed 52

Speed Java AWS Virtualization 52

Scalegrid

FEBRUARY 8, 2024

Durability Availability Fault tolerance These combined outcomes help minimize latency experienced by clients spread across different geographical regions. By leveraging the strengths of both fields, organizations can attain increased efficiency and operational capability within a highly virtualized landscape.

Storage 130

Storage Systems Big Data Azure 130

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

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. 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). This will slow this test a little.)

Speed 40

Speed Java AWS Virtualization 40

Enprowess

SEPTEMBER 7, 2021

Unit testing: Node.js has a unit testing framework called Jasmine, which allows unit testing of code during development. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. The performance of React improves because of the Virtual DOM algorithm. Easy UI test cases.

Open Source 52

Open Source Virtualization Programming Servers 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. " Epheremal virtual addresses don’t cut it as the basis for persistent pointers.

Hardware 52

Hardware Virtualization Operating System Programming 52

Speed Curve

DECEMBER 4, 2023

Not to belabor the point, but FID paints quite a different story, with virtually all (99.9%) desktop sites and 93.6% Latency is traditionally worse on mobile Despite improved network conditions in some parts of the world, round trip time is still much worse for mobile than desktop. for desktop, but only 64.9% for mobile.

Mobile 54

Mobile Performance Metrics Google 54

Alex Russell

MAY 9, 2022

This is a complex topic, but to borrow from a recent post , web performance expands access to information and services by reducing latency and variance across interactions in a session, with a particular focus on the tail of the distribution (P75+). Consistent performance matters just as much as low average latency.

Performance 86

Performance Latency Metrics Engineering 86

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. ON DUPLICATE KEY UPDATE kwatts_s=kwatts_s+1 The above are executed during the tests. UUID(), ?, ?,

Traffic 123

Traffic Scalability Database Servers 123

HammerDB

DECEMBER 5, 2020

For TPC-C this meant enough available spindles to reduce I/O latency and for TPC-H enough bandwidth for data throughput. 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

VoltDB

JUNE 1, 2017

It was – like the hypothetical movie I describe above – more than a little bit odd, as you could leave a session discussing ever more abstract layers of virtualization and walk into one where they emphasized the critical importance of pinning a network interface to a specific VM for optimal performance.

Hardware 56

Hardware Latency Virtualization Cloud 56

Abhishek Tiwari

JULY 12, 2018

Here are 8 fallacies of data pipeline The pipeline is reliable Topology is stateless Pipeline is infinitely scalable Processing latency is minimum Everything is observable There is no domino effect Pipeline is cost­-effective Data is homogeneous The pipeline is reliable The inconvenient truth is that pipeline is not reliable.

Latency 63

Latency Analytics Scalability Engineering 63

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. You cannot virtualize everything…yet. Fortunately, SRE incident management is one of the core practices used to limit the disruption caused by unexpected issues.

Social Media 90

Social Media Monitoring Latency DevOps 90

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

VoltDB

JUNE 1, 2017

It was – like the hypothetical movie I describe above – more than a little bit odd, as you could leave a session discussing ever more abstract layers of virtualization and walk into one where they emphasized the critical importance of pinning a network interface to a specific VM for optimal performance.

Hardware 40

Hardware Latency Virtualization Cloud 40

The Morning Paper

JUNE 30, 2019

It seems that under test load, it would behave beautifully until the performance just fell to the floor. In such a situation I’d expect to see unusually high latencies, but normal throughput). general purpose operating system with virtual memory). The system just crawled forever and never seemed to get out of this state.

Traffic 75

Traffic Latency Programming Scalability 75

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. The CFQ works well for many general use cases but lacks latency guarantees. This parameter needs to be extensively tested!

Best Practices 52

Best Practices Design Tuning Database 52

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. What’s worse, average latency degraded by more than 50%, with both CPU and latency patterns becoming more “choppy.” This was our starting point for troubleshooting.

Hardware 363

Hardware Cache Performance Latency 363

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

Brendan Gregg

JANUARY 17, 2018

OSes usually show you virtual memory and resident memory, shown as the "VIRT" and "RES" columns in top. For large processes (> 100 Gbytes) this duration of higher latency can last over 1 second, during which this tool is consuming system CPU time. That's the working set size. It is used for capacity planning and scalability analysis.

Cache 71

Cache Latency C++ Programming 71