CSS and Network Performance

CSS Wizardry

In this post I want to look at how CSS can prove to be a substantial bottleneck on the network (both in itself and for other resources) and how we can mitigate it, thus shortening the Critical Path and reducing our time to Start Render. If we’re bundling all of our CSS into one file, this is how the network treats it: Notice the single CSS file carries a Highest.

AI-powered DNS request tracking extends infrastructure observability for high quality network traffic

Dynatrace

To extend Dynatrace diagnostic visibility into network traffic, we’ve added out-of-the-box DNS request tracking to our infrastructure monitoring capabilities. Ensure high quality network traffic by tracking DNS requests out-of-the-box. Dynatrace news.

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JMeter Netconf Plug-in and Network Service Automation

DZone

JMeter Netconf Plug-in and Network Service Automation. Network service automation-related requirements are usually realized by means of commercial or open-source network orchestrator or controller software system. performance network automation jmeter plugins

How Do You Improve Network Agility?

DZone

Organizations are in search of improving network agility, but what exactly does this mean? Network agility is represented by the volume of change in the network over a period of time and is defined as the capability for software and hardware component’s to automatically configure and control itself in a complex networking ecosystem. However, organizations are still looking for ways to further improve network agility, but how do they get there?

How Do You Improve Network Agility?

DZone

What Is Network Agility? Network Agility — the volume of change in the network over a period of time — the capability for software and hardware components to automatically configure and control itself in a complex networking ecosystem. The rise of innovative efforts made by several vendors to expand and modernize network device interfaces is improving network agility and is seen with emerging technologies such as SD-WAN, SDN, NFV, and intent-based networking.

Snap: a microkernel approach to host networking

The Morning Paper

Snap: a microkernel approach to host networking Marty et al., This paper describes the networking stack, Snap , that has been running in production at Google for the last three years+. But the thing that really stands out to me as a key driving force in determining Snap’s design is the desire to be able to evolve Snap rapidly – i.e. being able to do regular releases of software upgrades to deploy new network functionality and performance optimisations.

Hyper Scale VPC Flow Logs enrichment to provide Network Insight

The Netflix TechBlog

How Netflix is able to enrich VPC Flow Logs at Hyper Scale to provide Network Insight By Hariharan Ananthakrishnan and Angela Ho The Cloud Network Infrastructure that Netflix utilizes today is a large distributed ecosystem that consists of specialized functional tiers and services such as DirectConnect, VPC Peering, Transit Gateways, NAT Gateways, etc. Without having network visibility, it’s not possible to improve our reliability, security and capacity posture.

Network Automation at Fastly

InfoQ

Ryan Landry, the senior director for TechOps at Fastly, has shared how network automation enables them to manage traffic peaks during popular live-streamed events such as the Super Bowl LIV. Edge Computing Performance Tuning Cloud DNS Performance & Scalability Network Programming Edge DevOps news

Large scale deployments are easy and cost-effective with network zones (Early Adopter)

Dynatrace

By minimizing bandwidth and preventing unrelated traffic between data centers, you can maintain healthy network infrastructure and save on costs. Dynatrace network zones provide an easy means of routing OneAgent traffic between data centers using a unique approach that separates Dynatrace from its competitors. In combination with ActiveGates, network zones save bandwidth and infrastructure costs and by: compressing OneAgent traffic. Migration to network zones made easy.

Cross rack network latency in AWS

n0derunner

The post Cross rack network latency in AWS appeared first on n0derunner. Workloads & Benchmarks aws networkingI have VMs running on bare-metal instances. Each bare-metal instance is in a separate rack by design (for fault tolerance). The bandwidth is 25GbE however, the response time between the hosts is so high that I need multiple streams to consume that bandwidth. Compared to my local on-prem lab I need many more streams to.

Why IT Needs to Look at the Network Through a 4-D Lens

DZone

Someone trying to look at the network through a 4-D lens. While ‘digital transformation’ and ‘cloud migration’ are two concepts with relatively broad definitions, they’re both rooted in the modernization of enterprise networks. This includes retiring legacy hardware and rethinking network architectures from the top-down to help facilitate a new wave of agile, cloud-delivered solutions and workflows.

Network Throttling: Monitor the User Experience

Dotcom-Montior

Network Throttling When it comes to monitoring web application performance, not only is it necessary emulate user actions, but also network conditions of end-user devices. Network throttling allows you to control connection speeds to better match the experience of real users, allowing you to see web application behavior in specific network conditions. Performance Tech Tips network throttling web application performance

Monitor web applications from within your corporate network

Dynatrace

Q: Do I need a special network configuration, opening non-standard ports and/or whitelisting some addresses? A: It all depends on your internal network architecture. The post Monitor web applications from within your corporate network appeared first on Dynatrace blog. Dynatrace news. We’re happy to announce the launch of Dynatrace Synthetic private browser monitors!

Network Throttling: Monitor the User Experience

Dotcom-Montior

Network Throttling. When it comes to monitoring web application performance, not only is it necessary emulate user actions, but also network conditions of end-user devices. Network throttling allows you to control connection speeds to better match the experience of real users, allowing you to see web application behavior in specific network conditions. Network connections can vary for many reasons. This is why network throttling is so important.

How Netflix brings safer and faster streaming experience to the living room on crowded networks…

The Netflix TechBlog

How Netflix brings safer and faster streaming experience to the living room on crowded networks using TLS 1.3 We want playback to start instantly and to never stop unexpectedly in any network environment. Therefore, it requires more messages to perform a handshake and two network round trips. The results imply that on slower or congested networks, which can be represented by the quantiles of at least 0.75, TLS 1.3

Execution Plan Impact on ASYNC_NETWORK_IO Waits – Part 1

SQL Performance

A few weeks ago, an interesting question was asked on the #SQLHelp hash tag on Twitter about the impact of execution plans on the ASYNC_NETWORK_IO wait type, and it generated some differing opinions and a lot of good discussion. To summarize: Focusing on ASYNC_NETWORK_IO waits alone as a tuning metric is a mistake. Note that for this size of data, the elapsed times are not significantly different, and neither are the wait times or wait counts for ASYNC_NETWORK_IO.

Using SQL Server’s SNITrace to Troubleshoot Networking Issues

SQL Server According to Bob

The following link provides a detailed overview and examples of how to leverage SNITrace to troubleshoot SQL Server networking issues. Networking SNITrace TDS XEventlink].

What is Network Error Logging?

Rigor

The post What is Network Error Logging? What if there was a way for you to know whenever a visitor had trouble connecting to your website? Imagine that whenever someone anywhere in the entire world experienced a DNS timeout, encountered an expired SSL certificate, or received a 502 Bad Gateway error when accessing your site, you instantly. appeared first on Rigor. DevOps Engineering Tips & Tricks Web Performance

New Network Fallacies

Tim Kadlec

” The fallacy of networks, or new devices for that matter, fixing our performance woes is old and repetitive. To be fair, each new generation of network connectivity does bring some level of change and transformation to how we interact with the internet. It takes time, money and significant other resources to roll out support for a new network. There was all sorts of similar controversy when the first carriers started rolling out supposed 4G networks.

Using SQL Server’s SNITrace to Troubleshoot Networking Issues

SQL Server According to Bob

Using SQL Server’s SNITrace to Troubleshoot Networking Issues In the process of tracking down a few TCP 10054 issues (highlighted here: ​​ [link] ) I ​​ also ​​ used ​​ the ​​ SNITrace ​​ (SNI Trace) ​​ capabilities. Before diving into SNITrace ​​ let’s breakdown the ​​ network trace of a successful and failed login. Networking SNITrace TDS XEv

Beyond data and model parallelism for deep neural networks

The Morning Paper

Beyond data and model parallelism for deep neural networks Jia et al., SysML’2019. I’m guessing the authors of this paper were spared some of the XML excesses of the late nineties and early noughties, since they have no qualms putting SOAP at the core of their work!

Juniper Networks ActiveGate extension now available (EAP)

Dynatrace

Juniper Network devices help enterprises connect and secure their applications, data, and services. Juniper Network devices utilizing Junos OS 7.4. This is why Dynatrace pairs these Juniper metrics with data from your OneAgent-monitored hosts in order to develop real-time visualizations of the technologies that interact with and depend on your Juniper network devices. Monitoring Juniper Network devices with Dynatrace is about to get even better. Dynatrace news.

Adaptive Serving using JavaScript and the Network Information API

Addy Osmani

Learn how to adaptively serve content based on the user's effective network connection type

Back-to-Basics Weekend Reading: Deep learning in neural networks

All Things Distributed

By reading up on its history, we get a better understanding of the current state of the art of Deep Learning algorithms and the Neural Networks that you build with them. Deep Learning in Neural Networks: An Overview. Jürgen Schmidhuber, in Neural Networks, Volume 61, January 2015, Pages 85-117 (DOI: 10.1016/j

Fallacy #4: The network is secure

Particular Software

In one such organization I've heard of, there existed two separate networks. To get data from a different network, you needed to browse in a separate room, as workstations did not have access to the Internet. The sysop would copy the contents to a mirror folder, which would analyze the contents with every virus scanner imaginable before mirroring them to the development network.

The secret-sharer: evaluating and testing unintended memorization in neural networks

The Morning Paper

The secret sharer: evaluating and testing unintended memorization in neural networks Carlini et al., …unintended memorization occurs when trained neural networks may reveal the presence of out-of-distribution training data— i.e. training data that is irrelevant to the learning task and definitely unhelpful to improving model accuracy. USENIX Security Symposium 2019.

Using rel=”preconnect” to establish network connections early and increase performance

CSS - Tricks

Each test consisted of nine runs, using Chrome emulating a mobile device, and the Cable network profile. The post Using rel=”preconnect” to establish network connections early and increase performance appeared first on CSS-Tricks. Milica Mihajlija : Adding rel=preconnect to a <link> informs the browser that your page intends to establish a connection to another domain, and that you'd like the process to start as soon as possible.

It’s time to migrate from NAM to Dynatrace

Dynatrace

For two decades, Dynatrace NAM—Network Application Monitoring, formerly known as DC RUM—has been successfully monitoring the user experience of our customers’ enterprise applications. Ping was introduced in 1983, practically in sync with the advent of IP network standards, proving that response time measurements were important from day one of modern computer networks. SNMP managed the costs of network links well, but not the sources of those costs (i.e.,

Back-to-Basics Weekend Reading - Exploring Complex Networks

All Things Distributed

We will start this year with a topic that spans many sciences: that of complex networks. There is no one better suitable to teach us about the fundamentals of complex networks than Steven Strogatz, the well known author and applied mathematics professor from Cornell University. After a year of absence I am bringing back the Back to Basic Weekend Reading Series.

Managing High Availability in PostgreSQL – Part III: Patroni

Scalegrid

Network Isolation Tests. Network-isolate the master server from other servers. Network-isolate the standby server from other servers. Network Isolation Tests. Network isolate the master server from other servers (split brain scenario). Manual intervention was required after the network isolation was corrected. Network-isolate the standby server from other servers. Manual intervention was required after the network isolation was corrected.

MySQL High Availability Framework Explained – Part III: Failover Scenarios

High Scalability

Scenario 3 – Network Partition – Network Connectivity Breaks Down Between Master and Slave Nodes. This is a classical problem in any distributed system where each node thinks the other nodes are down, while in reality, only the network communication between the nodes is broken. We assume that due to network issues, the cluster has partitioned into two groups – master in one group and 2 slaves in the other group, and we will denote this as [(M), (S1,S2)].

Machine Learning for a Better Developer Experience

The Netflix TechBlog

Erica Sinclair is helping us get LSH probabilities right Dimensionality reduction uses linear algebra or artificial neural networks to place semantically similar words, sentences, and log lines near to each other in a new vector space, using representations known as embeddings.

Beam-Up Load Balancing: The Portable Next Generation App Experience

DZone

performance ci/cd firewall load balancer it operations network automation virtual appliance cloud data centers application delivery controller hybrid itWe’ve seen many of the technological advances described in the Star Trek milieu become reality over the last 50 years, from personal communication devices and instant translators to GMOs, medical robots, 3D printing and weapons that stun. But, ah yes, the matter transporter. By far, the invention that captivates us most.

The Best Way to Host MySQL on Azure Cloud

Scalegrid

Azure Virtual Networks. Azure makes this easy to setup through the use of a Virtual Network (VNET) which can be configured for your MySQL servers. With an Azure VNET for MySQL , you’re able to setup secure communications between your servers, the internet, and even your on-premise private cloud network. Additionally, you can manage your MySQL access control through Network Security Groups (NSG) rules without having to deal with IP whitelists.

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Using DTrace on Oracle Linux

DZone

tools performance linux debugging network monitoring dtrace oracle linux 7Have you ever want to know the following application information on the production system? Call stack when the function is called. The elapsed time used by the functions. The values of parameters passed to the functions. The return values of the functions. The functions’ call trace. OS behaviors. Typically, this information can be retrieved by enabling debug logging or attaching a debugger to the application.

Top Redis Use Cases by Core Data Structure Types

Scalegrid

Social Networking Sites: Social platforms like Twitter use Redis Lists to populate their timelines or homepage feeds, and can customize the top of their feeds with trending tweets or stories. Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker.

Mobile performance and carrier networks

Tim Kadlec

This year’s post is an overview of how inconsistent mobile networks are, as well as a plea for more communication between carriers, manufacturers and developers. I always look forward to the December return of the all the lovely advent blogs that are full of web goodness. Sites like 24ways , PHPAdvent and the Performance Calendar mean that I’ll have something to look forward to reading each day.

Dynatrace: Verbesserte AI-gestützte Observability für Microsoft Azure

Dynatrace

Application performance monitoring Cloud and microservices Company and culture Dev life Digital experience Digital transformation Network Application Monitoring (formerly DC RUM Dynatrace news. München, 22.

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Back-to-Basics Weekend Reading - U-Net: A User-Level Network Interface

All Things Distributed

In the back to basics readings this week I am re-reading a paper from 1995 about the work that I did together with Thorsten on solving the problem of end-to-end low-latency communication on high-speed networks. The problem we were facing in those days was than many new high-speed network technologies, such as ATM, became available for standard workstations but that the operating systems were not able to deliver those capabilities to its applications.

Dynamic resources using the Network Information API and service workers

Dean Hume

Without fail, there is this spot along the line where my network connection drops from a clear 4G signal to a 2G signal at best. This is where the Network Information API aims to change things. The Network Information API allows developers to determine the connection types and the underlying connection technology that the user agent is using. There are a number of use cases for the Network Information API. Progressive Web Apps Network Information API Web Performance

ScaleGrid Fully Managed Hosting for Redis™ Now Available on Azure

Scalegrid

Additionally, organizations can customize their Redis™ persistence and host through their own Azure account which allows them to leverage advanced cloud capabilities like Azure Virtual Networks (VNET), Security Groups, and Reserved Instances to reduce long-term hosting costs up to 60%. PALO ALTO, Calif., October 2, 2019 – ScaleGrid, a rapidly growing leader in the Database-as-a-Service (DBaaS) space, has just launched their new fully managed Hosting on Azure for Redis™ service.

Azure 100

MySQL High Availability Framework Explained – Part II: Semisynchronous Replication

Scalegrid

Since we are operating with 2 slaves and the rpl_semi_sync_master_wait_for_slave_count is set to 1, we’ve noticed that at least one of the slaves does acknowledge within a reasonable amount of time and the master does not switch over to asynchronous mode during temporary network disruptions. The theorem states that, in the presence of a network partition, we will have to choose either availability or consistency, but not both.

In the Era of Social Distancing, Performance, and Scalability Testing Are Critical

DZone

performance scalability ui scalability and performance eggplant network protocolsThe coronavirus pandemic has changed all facets of our lives, ranging from how we work to how we relax to how our children learn. There are countless implications of this, including the potential for long-term and, in some cases, permanent changes to business processes.