- Contexts 3 4 4 – Fast Window Switcher System Download
- Contexts 3 4 4 – Fast Window Switcher System Installation
Microsoft has today released the Windows 10 20H1 ISO files for clean installation. The files are out for Windows 10 version 2004 Preview Build 19041, which is the ready to manufacturing (RTM) build.
In addition to the new APIs, check out these updates to the app model, MSIX and WSL.
Windows Subsystem for Linux: The Windows Subsystem for Linux 2 is the latest and greatest version of WSL. It has significantly faster file IO performance (up to 20x faster) with full system call compatibility, meaning you can run more of the Linux apps you love (like Docker).
Hosted App Model: Applications can now declare themselves as a host for other applications via the new HostRuntime extension. These hosted apps look and behave like independent apps and can have deep Windows integration, even though they get their main executable from the host app. This technology powers PWAs on Microsoft Edge. To get started using the Hosted App Model, see this blog.
Sparse Signed Packages: Applications can now include a signed MSIX package in their existing installers and have their installers register it. This allows applications to keep their existing installers but still assign themselves identities. An identity makes the app known to Windows and allows for a more deeply integrated experience by enabling the app to call Windows APIs that require identities such as Tiles, Toasts, Notifications and BackgroundTasks.
IMPROVED DISK USAGE FOR WINDOWS SEARCH
In 19H1, Microsoft asked Insiders why they were turning off the search indexer. Your feedback helped Microsoft make improvements then and helped focus on three key areas of improvement in Windows 10 version 2004: excessive disk and CPU usage, general performance issues, and low perceived value of the indexer.
Based on this, Microsoft is introducing an algorithm that detects high disk usage and activity, so it can better identify peak usage times and manage the indexer accordingly. Microsoft is also making changes for developers to prevent searches of certain repositories and project folders to improve disk usage.
QUICK SEARCHES NOW IN SEARCH HOME
To help you find the info that matters even faster, Microsoft has added four quick web searches to your Search Home:
Weather: Get current conditions and the upcoming forecast
Top news: Read the latest headlines from popular news sites
Today in history: Explore four events that happened on this day
New movies: Find out what’s playing in theaters near you
In addition to the new APIs, check out these updates to the app model, MSIX and WSL.
Windows Subsystem for Linux: The Windows Subsystem for Linux 2 is the latest and greatest version of WSL. It has significantly faster file IO performance (up to 20x faster) with full system call compatibility, meaning you can run more of the Linux apps you love (like Docker).
Hosted App Model: Applications can now declare themselves as a host for other applications via the new HostRuntime extension. These hosted apps look and behave like independent apps and can have deep Windows integration, even though they get their main executable from the host app. This technology powers PWAs on Microsoft Edge. To get started using the Hosted App Model, see this blog.
Sparse Signed Packages: Applications can now include a signed MSIX package in their existing installers and have their installers register it. This allows applications to keep their existing installers but still assign themselves identities. An identity makes the app known to Windows and allows for a more deeply integrated experience by enabling the app to call Windows APIs that require identities such as Tiles, Toasts, Notifications and BackgroundTasks.
IMPROVED DISK USAGE FOR WINDOWS SEARCH
In 19H1, Microsoft asked Insiders why they were turning off the search indexer. Your feedback helped Microsoft make improvements then and helped focus on three key areas of improvement in Windows 10 version 2004: excessive disk and CPU usage, general performance issues, and low perceived value of the indexer.
Based on this, Microsoft is introducing an algorithm that detects high disk usage and activity, so it can better identify peak usage times and manage the indexer accordingly. Microsoft is also making changes for developers to prevent searches of certain repositories and project folders to improve disk usage.
QUICK SEARCHES NOW IN SEARCH HOME
To help you find the info that matters even faster, Microsoft has added four quick web searches to your Search Home:
Weather: Get current conditions and the upcoming forecast
Top news: Read the latest headlines from popular news sites
Today in history: Explore four events that happened on this day
New movies: Find out what’s playing in theaters near you
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The scheduler maintains a queue of executable threads for each priority level. These are known as ready threads. When a processor becomes available, the system performs a context switch. The steps in a context switch are:
The Ultimate Performance mode in Windows 10 aims to optimize the performance of the operating system, and here's how you can enable it on your PC. When Windows makes a CPU stop executing one thread's code and start executing another thread's code, we call this a context switch. A context switch is fairly expensive because the operating system has to: So circa CLR via C# 2.0 lets say we are on Pentium 4 2.4ghz 1 core non-HT, XP. Every 20 milliseconds?
- Both types involve handing control over to the operating system kernel to perform the context switch. The process of switching in and out of the OS kernel along with the cost of switching out the registers is the largest fixed cost of performing a context switch. A more fuzzy cost is that a context switch messes with the processors cacheing.
- In the above figure, you can see that initially, the process P1 is in the running state and the process P2 is in the ready state. Now, when some interruption occurs then you have to switch the process P1 from running to the ready state after saving the context and the process P2 from ready to running state.
- Perforce Software provides enterprise-scale development tools. This includes version control, application lifecycle management, agile planning, and static analysis.
- Save the context of the thread that just finished executing.
- Place the thread that just finished executing at the end of the queue for its priority.
- Find the highest priority queue that contains ready threads.
- Remove the thread at the head of the queue, load its context, and execute it.
The following classes of threads are not ready threads.
- Threads created with the CREATE_SUSPENDED flag
- Threads halted during execution with the SuspendThread or SwitchToThread function
- Threads waiting for a synchronization object or input.
Contexts 3 4 4 – Fast Window Switcher System Download
Until threads that are suspended or blocked become ready to run, the scheduler does not allocate any processor time to them, regardless of their priority.
The most common reasons for a context switch are:
- The time slice has elapsed.
- A thread with a higher priority has become ready to run.
- A running thread needs to wait.
Contexts 3 4 4 – Fast Window Switcher System Installation
When a running thread needs to wait, it relinquishes the remainder of its time slice.