Here are the benefits and some caveats to running data-path applications in the user space. Discussed is Linux's UIO framework. Traditionally, packet-processing or data-path applications in Linux have ...

I believe the best and worst thing about Linux is its hard distinction between kernel space and user space. Without that distinction, Linux never would have become the most leveraged operating system ...

only the most essential and performance-critical code are placed in the kernel. Other things, such as GUI, management and control code, typically are programmed as user-space applications. This ...

What, never? Hardly ever. One of the fundamental principles of Linux kernel development is that user-space interfaces are set in stone. Once an API has been made available to user space ...

Such operating systems keep their kernel in one area of memory (kernel space) with user applications in another. The system prevents the user's applications in user space from accessing any ...

A new interface for implementing device drivers outside the kernel has one project saving about 5,000 lines of code. The concept of supporting user-space drivers has appeared on LWN a few times ...

The wonderfully punny Space-Time tool records physical memory usage, time spent in user space vs. kernel space and even threads and subprocesses created. These words may not mean much to some ...

Linux 6.15 kernel released with new NVIDIA Rust driver, major exFAT performance gains, controversial fwctl subsystem, and ...

Increasingly, the operation of the kernel is being tied to a set of low-level user-space applications; there is not much which can be done with a bare kernel. How all of this low-level plumbing ...