I was reading some sites and came across (LTR) by the number of kernel. Can somebody explain what is means?

  • Are you sure you don't mean LTS?
    – HalosGhost
    Dec 2, 2014 at 22:29
  • No, LTS is for distribution Dec 2, 2014 at 23:54
  • No, LTS is a kernel thing (that distributions, on occasion, use). It means Long-Term Support.
    – HalosGhost
    Dec 3, 2014 at 0:24
  • So does that mean that RedHat does not change its kernel for 10 years, if the distro is supported for 10 years? Dec 3, 2014 at 8:11

2 Answers 2


LTR stands for Long Term Release. This is also known as a LTSR, short for Long Term Support Release. These releases are supported for a longer time, and are meant to be used in Production Environments, where stability is preferred over new features. In terms of the kernel you are reading about, the LTR cycle is about 3 years. This means if you are a user who needs stability, if you download an LTR kernel, it will be supported upstream for the next 3 Years. The definitive source for Linux Kernels are the Linux Kernel Archives.


These are Long Term Releases:

There are usually several "longterm maintenance" kernel releases provided for the purposes of backporting bugfixes for older kernel trees. Only important bugfixes are applied to such kernels and they don't usually see very frequent releases, especially for older trees.

Source: https://www.kernel.org/releases.html

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .