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How to Bring Hybrid Core into Web https://palmacedar.com/blog/how-to-bring-hybrid-core-into-web/?utm_source=rss&utm_medium=rss&utm_campaign=how-to-bring-hybrid-core-into-web Thu, 09 Jun 2022 12:19:09 +0000 https://palmacedar.com/?page_id=12181

According to the usage statistics of user application from Microsoft, 60% of the time people spend on the PC is within the web browser. Google Chrome is a cross-platform web browser developed by Google based on Chromium project. According to StatCounter website stats, by January 2022, the market share of Chrome browser is over 63% across all platforms worldwide. 

Hybrid core architecture combining high performance cores and power-efficient cores became more and more popular, especially after Intel launched the Alder Lake CPU product. Performance cores are designed to provide maximum compute performance, while efficient cores are designed for maximum power efficiency. Usually OS schedulers can manage hybrid core scheduling, but they lack details of application behaviors, like critical paths. It’s difficult for OS schedulers to cover all scenarios. 

We come from the Web Optimization team, and focus on power and performance optimization for Web platforms, mainly Chromium, aiming for better user experience on IA. This article introduces our work to utilize hybrid core capability to schedule specific threads/processes’ execution in Chrome browser to efficient cores, which adopts dynamic policies to reduce power consumption on different levels based on device state. All the analysis and tests below are performed on the Chrome OS platform.

Overview

On the hybrid core platform, Chrome can schedule threads to efficient cores to save power consumption. However, putting browser threads on efficient cores all the time is impractical since lots of threads may surge and demand higher performance. So we propose a hybrid core scheduling technology in Chrome browser to apply dynamic throttles on specific non-critical threads through scheduling them to efficient cores to execute. The technology is based on Web runtime scenarios, like background/idle/ads/video, as the importance of threads would change in different scenarios. Moreover, device information, like battery/thermal status and hybrid core information, need to be exposed to Chrome. Based on them, hybrid core scheduling would apply different core allocation policies to balance power and performance. Normally we schedule low priority threads to efficient cores. But when the device is in a critical stage like running out of battery, the scheduling policy would be more aggressive to prolong device usage time. The application of scheduling policy relies on the OS support, and we can use thread priority or QoS mechanism according to the customs of the OS. On Chrome OS, currently we change thread priority and its cgroup association. Whole architecture of the proposal is shown in Figure 1.

Figure 1: hybrid core scheduling in Chrome browser

Implementation

On the hybrid core platform, Chrome can schedule threads to efficient cores to save power consumption. However, putting browser threads on efficient cores all the time is impractical since lots of threads may surge and demand higher performance. So we propose a hybrid core scheduling technology in Chrome browser to apply dynamic throttles on specific non-critical threads through scheduling them to efficient cores to execute. The technology is based on Web runtime scenarios, like background/idle/ads/video, as the importance of threads would change in different scenarios. Moreover, device information, like battery/thermal status and hybrid core information, need to be exposed to Chrome. Based on them, hybrid core scheduling would apply different core allocation policies to balance power and performance. Normally we schedule low priority threads to efficient cores. But when the device is in a critical stage like running out of battery, the scheduling policy would be more aggressive to prolong device usage time. The application of scheduling policy relies on the OS support, and we can use thread priority or QoS mechanism according to the customs of the OS. On Chrome OS, currently we change thread priority and its cgroup association. Whole architecture of the proposal is shown in Figure 1.

Implementation

The implementation of hybrid core scheduling technology mainly contains three parts, scenario detection, scheduling policy, and OS support work.

Scenario detection

First we need to determine the current scenario of a process based on inputs from various browser components. For example, the Chrome render process has a status about background state, which indicates whether the process is foreground or background scenario. For another example, Chrome has an Ad Tagging mechanism to detect ads and the resources they load in the browser. Ad Tagging works by matching resource requests against a filter list to determine if they’re ad requests. An iframe will be marked as an ad iframe if its url matches the filter list, if the tagged script is involved in the creation of the iframe, or if its parent frame is an ad iframe. If all frames are ad frames, the render process would be tagged as an ad process. The browser collects all these inputs and uses a prioritization mechanism to decide the overall mode for the process. Based on the scenario, we adopt an appropriate scheduling policy next.

Scheduling policy

The scheduling policy varies based on the device status. As shown in Figure 1, the browser will monitor the power status of the device via APIs provided by the OS, including the battery level, charging status and the thermal state. For hybrid core scheduling, two stages are defined below.

The first one is the normal stage, which means the battery level is over 20% or the device is charging, meanwhile the thermal state is normal. In this stage, the users care more about the performance than power consumption, so we only schedule low priority threads/processes to efficient cores, like the background processes or the threads handling low priority tasks such as logging/profiling.

The second one is the critical stage, which means the battery level is very low without charging, or the device is in critical thermal states, or the web developer explicitly wants to enter power saving mode, like using battery-savings meta tag. In this stage, we’re going to apply more aggressive policies to save more power, prolong device usage time or avoid thermal throttling due to high CPU temperature. Under this circumstance, many threads/processes in normal priority will be scheduled to efficient cores as long as they are not involved in UX critical tasks.

OS support work

There is some work required to be done to make Chrome utilize OS capability. Battery and thermal status are two important factors to UX. Based on them, Chrome could make appropriate policies to balance performance and power consumption. Previously, there was only battery status exposed to Chrome. Our team has landed a thermal status notification feature in Chrome. In the feature, we introduced 4 thermal levels: Nominal, Fair, Serious, and Critical referring to Apple’s Thermal Hinting API. So that Chrome can get the real-time thermal status. With battery level, charging and thermal status reported, Chrome would decide which stage to enter and apply different scheduling policies.

Furthermore, we have built a bridge between Chrome threads and efficient cores on Chrome OS using the existing cgroup mechanism. Background priority threads are placed in a specific cgroup, which has a specified CPU set. On hybrid core platforms, efficient cores are likely to be allocated for the group. So if we want to schedule unimportant threads to efficient cores to execute, we can lower the thread priority and put them in the non-urgent cgroup. The scheduling is dynamic. When the threads become important (e.g. switch to foreground), we would raise the thread priority to normal right away, hence remove from the specific cgroup.

Experiments

We use the local build Chromium browser to evaluate the power impact of hybrid core scheduling per each scenario, currently focusing on background renderer processes, ads processes, and idle processes (idle is a state defined in the Chrome RAIL model). According to the experiments performed on Alder Lake Chromebook, we observe 4.2% CPU package power reduction for web browsing when scheduling idle processes to efficient cores, and 3.8% CPU package power reduction when dispatching advertisement processes. At the same time, we use a 4-tab browsing workload to test the power impact of placing background processes on efficient cores, and see 0.9% CPU package power reduction. The power saving would be larger when the number of background tabs and page activities increase.

The experiment data shows that we achieve distinct power reduction by utilizing hybrid core capability in Chromium browser to schedule non-UX critical processes/threads to efficient cores in chosen scenarios, which helps extend device battery life.

Future Work

We will continue to explore more scenarios, which don’t demand high performance, and corresponding processes/threads can be scheduled to efficient cores. Besides, as for some scenarios like ads and idle, running on efficient cores might have performance impact, we are about to conduct performance evaluation soon and adjust the scheduling policy accordingly. Furthermore, we intend to extend our analysis and hybrid core scheduling optimization to Windows and Linux platforms.

]]> HOW TO LEARN WEB DEVELOPMENT FOR FREE https://palmacedar.com/how-to-learn-web-development-for-free/?utm_source=rss&utm_medium=rss&utm_campaign=how-to-learn-web-development-for-free https://palmacedar.com/how-to-learn-web-development-for-free/#respond Fri, 11 Feb 2022 15:00:06 +0000 https://palmacedar.com/?p=12075 Do your really want to know how to learn web development for free? Firstly, Web development is the details of work involved in putting up websites for the internet (international extensive web) or an intranet (a non-public network).  Web development is the primary non-layout issue of constructing websites, writing markup, and coding. The knowledge can be gotten free without making any monetary investment.

How to learn web development for free – Basic Knowledge

TYPES OF WEB DEVELOPMENT

  1. Frontend web development
  2. Backend web development
  3. Full-stack web development

WHAT IS FRONT-END DEVELOPMENT?

Front-end web development is seen as part of an internet site or internet utility this is chargeable for personal experience. The person without delay interacts with the front-end part of the internet utility or internet site.

Front end Languages: The front-end component is constructed through the use of a few languages that are mentioned below:

  • HTML: HTML stands for Hypertext Markup Language. It is used to layout the front-end part of internet pages with the use of a markup language. HTML is a combination of Hypertext and Markup language. Hypertext defines the hyperlink among the internet pages. The markup language is used to outline the textual content documentation inside the tag which defines the shape of internet pages.

 

  • CSS: Cascading Style Sheets, fondly known as CSS, is a sincerely designed language supposed to simplify the manner of creating internet pages presentable. CSS lets you use patterns on internet pages. More importantly, CSS allows you to do that unbiased of the HTML that makes up every internet web page.

 

  • JavaScript: JavaScript, is a well-known scripting language used to create magic at websites to make the web page interactive for the person. It is used to beautify the capability of an internet site to run cool video games and internet-primarily based software.

 

Front End Frameworks and Libraries:

  • AngularJS: AngularJS is a JavaScript open-supply front-end framework this is especially used to increase single-web page internet applications (SPAs). It is a constantly developing and increasing framework which affords higher methods for growing internet applications. Its adjustments the static HTML to dynamic HTML. It is an open-supply mission that anyone may freely use and modify. It extends HTML attributes with Directives, and statistics is certain with HTML.

 

  • React.js: React is a declarative, efficient, and bendy JavaScript library for constructing person interfaces. ReactJS is an open-supply, component-primarily based front-stop library accountable handiest for the view layer of the utility. It is maintained through Facebook.

 

  • Bootstrap: Bootstrap is a loose and open-supply device series for growing responsive websites and internet applications. It is the maximum famous HTML, CSS, and JavaScript framework for growing responsive, mobile-first websites.

 

  • jQuery: jQuery is an open-supply JavaScript library that simplifies the interactions among an HTML/CSS report, or extra exactly the Document Object Model (DOM), and JavaScript. Elaborating the terms, jQuery simplifies HTML report traversing and manipulation, browser occasion handling, DOM animations, Ajax interactions, and cross-browser JavaScript development.

 

  • SASS: It is the maximum reliable, mature, and strong CSS extension language. It is used to increase the capability of a present CSS of a website consisting of the whole lot from variables, inheritance, and nesting with ease.

 

  • Some different libraries and frameworks are Semantic-UI, Foundation, Materialize, Backbone.js, Express.js, Ember.js, and many others.

Other Important Points:

  • Work with textual content editors to apply shortcuts and their centers i.e. Visual Studio, Atom, Sublime, and many others.
  • Make UI accountable for the use of the grid system.
  • Git and git instructions like init, add, commit, and many others for model management and to paintings with the team.
  • Other gear like npm & yarn bundle managers, sass CSS pre-processor, browser DevTools i.e. chrome dev gear.
  • Understand the use of HTTP, JSON, Graph QL APIs to fetch statistics with the use of Axios or different gear
  • It additionally calls for a few layout competencies to make the format appearance higher

WHAT DO YOU CALL THE BEHIND-THE-SCENES AND BRAIN FUNCTIONS OF A WEBSITE?

How to learn web development for free

A website backend is a combination of technology and programming that enhances your website. It consists of three parts: the server, the application, and the database.  A back-end developer develops and maintains the technology needed to run the components that enable the user side of a website to exist. Backend code brings value to everything a frontend developer creates.  These developers are responsible for building, maintaining, testing, and debugging the entire backend. This includes core application logic, databases, data and application integration, APIs, and other backend processes.  The backend part is built using several libraries, frameworks, and languages ​​described below:

  • PHP: PHP is a server-side scripting language specifically designed for web development. PHP code runs on the server-side, so it’s called a server-side scripting language.
  • C ++: This is a general-purpose programming language and is widely used in competitive programming today. It is also used as a backend language.

 

  • Java: Java is one of the most popular and widely used programming languages ​​and platforms. It’s very scalable. Java components are ready to use.

 

  • Python: Python is a programming language that allows you to work faster and integrate your system more efficiently.

 

  • JavaScript can be used as both programming languages ​​(front end and back end).

 

  • Node.js: Node.js is an open-source, cross-platform runtime environment for executing JavaScript code outside the browser. It’s important to remember that NodeJS is neither a framework nor a programming language. Most people are confused and understand that it is a framework or programming language. We often use Node.js to build back-end services such as APIs such as web and mobile apps. Used in the production of large companies such as Pay Pal, Uber, Netflix, and Walmart.

 

  • Backend Frameworks: The list of backend frameworks is as follows: Express, Django, Rails, Laravel, Spring, etc.

 

  • other backend programs/scripting languages ​​are C #, Ruby, REST, GO, etc.

Other important points:

 

  • Inefficient structuring of data.

 

  • Processing Request reply from API to store and retrieve data.

 

  • Data security is important.

Note: JavaScript is a major technology on the web and is essential to all stacks’

Database: Database is the collection of inter-related data which helps in efficient retrieval, insertion, and deletion of data from the database and organizes the data in the form of tables, views, schemas, reports, etc.

  • Oracle: The purpose of this database is to store and retrieve information related to queries.
  • MongoDB: This means that MongoDB is not based on a relational database structure like tables, but provides a completely different mechanism for storing and retrieving data.
  • SQL: The structured query language is the standard database language used to create, maintain, and retrieve relational databases.

WHAT IS FULL-STACK DEVELOPMENT?

HOW TO LEARN WEB DEVELOPMENT FOR FREE

Full-stack development: This refers back to the improvement of the front-end (client-side) and back-end (server-side) elements of an internet application.

Full-stack web Developers: Full-stack web builders can lay out whole internet packages and websites. The paintings at the frontend, backend, database, and debugging of internet packages or websites.

REASONS WHY YOU SHOULD LEARN WEB DEVELOPMENT – HOW TO LEARN WEB DEVELOPMENT FOR FREE

  1. HTML

With HTML an entirely new type of internet utility is possible. You are capable of expanding full-featured apps that run on any type of device – from mobiles to desktops.

  1. Create stuff

Being a web developer offers you the strength to create new cool things. If you could consider it you could construct it (or type of). You don`t want any material – simply your know-how about internet improvement.

  1. Low Starting Costs

Starting with web development expenses very little. Assuming you have already got a pc and a web connection, you best want a little webspace whilst your internet site is prepared for launch – or even this could be free.

  1. Share it with the world

Websites may be reached from everywhere in the world. If you reflect on consideration on it, you understand how effective this is. You can attain all and sundry on this planet.

  1. Job market

The internet remains developing and internet builders are a scarce useful resource that has appropriate probabilities at the activity market.

  1. Mobile Devices

With cell gadgets getting greater effective, there are even opportunities for internet builders to create cool stuff

  1. Fast Results

Unlike conventional laptop programming, web development offers you immediate results. No greater dump “Hello world!” packages anymore.

  1. It’s easy.

Beginning web development is highly easy – you best want your internet browser and an editor. Both have to be set up on your pc already. Don’t get me wrong, it takes loads to expand top-notch internet programs like e.g., Google Docs, however, the barrier of access may be very low.

  1. Being creative

Web development helps you to specify yourself. You can strive for the entirety you need and proportion it with the world.

  1. It’s Fun

Web development is an amusing experience.

For more articles like How to learn web development for free visit our blog

]]> https://palmacedar.com/how-to-learn-web-development-for-free/feed/ 0 Microsoft unveils Windows 11 operating system https://palmacedar.com/blog/microsoft-unveils-windows-11-operating-system/?utm_source=rss&utm_medium=rss&utm_campaign=microsoft-unveils-windows-11-operating-system Mon, 04 Oct 2021 11:40:05 +0000 https://palmacedar.com/?page_id=11863

Microsoft had on Tuesday, the 31st of August 2021 intimated the public its plans to roll out Windows 11 on the 5th of October 2021, in a free upgrade of its operating system available for hardware that works with Windows 11 pre-loaded and other eligible Window 10 personal computers.

The new software will let Android apps run on the Windows desktop.

Product manager Panos Panay promised smaller, faster security updates – a common complaint for Windows users – and said they would happen in the background.

Windows 11 will also let users configure multiple desktops for work, home, and gaming, like on a Mac.

One cosmetic change is putting the “Start” button at the bottom-centre of the screen rather than left-hand side.

Microsoft says there are currently about 1.3 billion devices running Windows 10.

An early preview version of the new system will be released for app developers next week.

Windows 11 will be available as a free update to existing Windows 10 users – although some devices will not have the right specifications. These include a minimum of 64 gigabytes of storage and 4 gigabytes of RAM.

“We expect all eligible devices to be offered the free upgrade to Windows 11 by mid-2022. If you have a Windows 10 PC that’s eligible for the upgrade, Windows Update will let you know when it’s available,” says Panos Panay.

Here are 11 highlights of this release

  1. The new design and sounds are modern, fresh, clean and beautiful, bringing you a sense of calm and ease.
  2. With Start, we’ve put you and your content at the center. Start utilizes the power of the cloud and Microsoft 365 to show you your recent files no matter what device you were viewing them on.
  3. Snap Layouts, Snap Groups and Desktops provide an even more powerful way to multitask and optimize your screen real estate.
  4. Chat from Microsoft Teams integrated into the taskbar provides a faster way to connect to the people you care about.
  5. Widgets, a new personalized feed powered by AI, provides a faster way to access the information you care about, and with Microsoft Edge’s world class performance, speed and productivity features you can get more done on the web.
  6. Windows 11 delivers the best Windows ever for gaming and unlocks the full potential of your system’s hardware with technology like DirectX12 Ultimate, DirectStorage and Auto HDR. With Xbox Game Pass for PC or Ultimate you get access to over 100 high-quality PC games to play on Windows 11 for one low monthly price. (Xbox Game Pass sold separately.)
  7. Windows 11 comes with a new Microsoft Store rebuilt with an all-new design making it easier to search and discover your favorite apps, games, shows, and movies in one trusted location. We look forward to continuing our journey to bring Android apps to Windows 11 and the Microsoft Store through our collaboration with Amazon and Intel; this will start with a preview for Windows Insiders over the coming months.
  8. Windows 11 is the most inclusively designed version of Windows with new accessibility improvements that were built for and by people with disabilities.
  9. Windows 11 unlocks new opportunities for developers and creators. We are opening the Store to allow more developers and independent software vendors (ISVs) to bring their apps to the Store, improving native and web app development with new developer tools, and making it easier for you to refresh the look and feel across all our app designs and experiences.
  10. Windows 11 is optimized for speed, efficiency and improved experiences with touch, digital pen and voice input.
  11. Windows 11 is the operating system for hybrid work, delivering new experiences that work how you work, are secure by design, and easy and familiar for IT to deploy and manage. Businesses can also test Windows 11 in preview today in Azure Virtual Desktop, or at general availability by experiencing Windows 11 in the new Windows 365.

 

]]> CLOUD COMPUTING TECHNOLOGY AND ITS BENEFITS https://palmacedar.com/cloud-computing-technology-and-its-benefits/?utm_source=rss&utm_medium=rss&utm_campaign=cloud-computing-technology-and-its-benefits https://palmacedar.com/cloud-computing-technology-and-its-benefits/#respond Tue, 11 May 2021 08:10:38 +0000 https://palmacedar.com/?p=1124 Cloud Infrastructures promote environmental pro-activity by powering virtual services rather than physical goods and hardware, reducing paper waste, improving energy efficiency, and reducing commuter-related pollution (given that workers can access it from anywhere with an internet connection).

Business Advantages of Cloud Computing

Mobility: Cloud computing enables mobile access to corporate data via smartphones and tablets, which, given the billions of smartphones in use today, is an excellent way to ensure that no one is ever left behind.

Security: When it comes to implementing a cloud-computing solution, several businesses are concerned about stability. Well, 94 percent of companies said transitioning to the cloud improved their security, and 91 percent said it made it easier to meet government enforcement requirements.

Easy data backup: Data loss that is catastrophic can occur at any time. Natural disasters, power surges, or hardware failure may all result in data loss. Although most businesses have contingency plans in place, it is beneficial to have additional contingencies in place.

Quality Control: Few items are as damaging to a company’s success as low quality and inaccurate reporting. Both records are stored in one location and in the same format in a cloud-based framework.

Cost Savings: You’re not alone if you’re concerned about the financial implications of switching to cloud computing. The initial cost of deploying a cloud-based server is a challenge for 20% of businesses.

Automatic Software Updates: There is nothing more inconvenient than having to wait for device updates to be installed while you have a lot on your plate. Cloud-based systems are constantly refreshed and modified.

Sustainability: Given the current state of the atmosphere, it is no longer sufficient for businesses to put a recycling bin in the breakroom and say that they are helping the environment. True sustainability necessitates strategies that fix waste at all levels of a company.

Data that is extremely accessible: Businesses use cloud storage to access information from any computer that can connect to the internet.

Insight: When we move further into the digital era, it becomes increasingly clear that “data is wealth.” There are nuggets of useful, actionable knowledge hidden in the millions of bits of data that accompany your consumer transactions and business operation, just waiting to be discovered and acted upon.

Cloud computing is an umbrella term for different types of cloud services, including:

Cloud backup: Although cloud storage and cloud backup can appear to be the same thing, cloud backup is intended to be a failsafe solution in the event of a server crash, cyberattack, or other data loss.

Cloud hosting: Email services, application hosting, web-based phone systems, and data storage are just a few of the forms of information sharing that these technologies provide.

Cloud storage: These services save and back up your files so you can access them whenever you want. Files may also be exchanged and synchronized between different devices.

Infrastructure as a service: Physical hardware, such as in-house web hosting servers, is replaced by infrastructure as a service. Infrastructure as a service allows companies to take advantage of a variety of configurations to handle various workload needs by delivering items like virtual servers or virtual machines.

Software as a service (SaaS): SaaS applications make use of the internet to provide a service. Office 365, Google Apps, QuickBooks Online, and Salesforce are examples of Software as a Service applications. Platform as a service solution are similar to software as a service solution.

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