Every Linux distribution has a kernel that offers support for real-time apps. SUSE Linux Enterprise Real Time is...
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
a Linux kernel that also offers applications and tools to manage and support a real-time environment. The kernel uses different scheduler queues and makes a distinction between normal processes and real-time processes. If there is a shortage of available resources, the Linux kernel will service the real-time resources first.
For example, if you open a utility such as top, the Linux kernel starts some kernel threads as real-time processes by default. This approach guarantees that the kernel serves essential processes and applications -- such as those used in high-performance computing or financial transactions -- first, while lower-priority processes and applications have to wait.
There are other options to enable real-time support besides SUSE Enterprise Linux Real Time; you can use the chrt command on any Linux distribution to put specific processes that are not kernel threads in the real-time queue. This process, however, requires expertise. If you aren't careful about what's entered into the real-time queue, you can risk breaking your entire server. For example, if you use the wrong settings and configure a busy IT process -- such as a large compiling job or a database query -- as an uninterruptible, real-time process, there won't be any more resources left for essential kernel processes to run.
Since organizations typically use real-time processes and applications in critical environments, it is essential to have appropriate support for them. The SUSE Linux Enterprise Real Time extension offers that support, but it doesn't run any non-open source software. Still, while you could build your own real-time system for Linux, SUSE Linux Enterprise Real Time is a more reliable and supported product.
What are the leading options for Linux server distributions?
Improve admin skills by building Linux from scratch
Perfect your Linux system management
Dig Deeper on Linux servers
Related Q&A from Sander van Vugt
As it is with other cloud platforms, autoscaling in OpenStack is important to meet changing workload demands. Here's how to enable that process with ...continue reading
Ceph object storage performance is largely based on network speed, but journal disks and the right file system for object storage devices also play a...continue reading
Integrating Ceph and Windows isn't as straightforward as connecting Ceph to Linux machines. You'll need a Ceph Gateway or SUSE Enterprise Storage to ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.