These are great news, and are spreading all over the Linux world.

Developer Mike Galbraith, made a patch for the Linux Kernel and adding only 224 lines to the kernel it really improves the speed of the Linux Desktop.

I am in no ways a developer or programmer, but according to Phoronix

The patch being talked about is designed to automatically create task groups per TTY in an effort to improve the desktop interactivity under system strain.

To know a little more about TTY you may want to read The TTY demystified.

This patch can be expected with Kernel release 2.6.38, but it may worth the waiting time.

Even Linux Torvalds got, nicely impressed, as you can see in his email

On Sun, Nov 14, 2010 at 5:13 PM, Mike Galbraith efault@gmx.de wrote:

Which is what I just did. If the oddball case isn’t a big deal, the patch shrinks, which is a good thing. I just wanted to cover all bases.

Yeah. And I have to say that I’m (very happily) surprised by just how small that patch really ends up being, and how it’s not intrusive or ugly either.

I’m also very happy with just what it does to interactive performance. Admittedly, my “testcase” is really trivial (reading email in a web-browser, scrolling around a bit, while doing a “make -j64” on the kernel at the same time), but it’s a test-case that is very relevant for me. And it is a huge improvement.

It’s an improvement for things like smooth scrolling around, but what I found more interesting was how it seems to really make web pages load a lot faster. Maybe it shouldn’t have been surprising, but I always associated that with network performance. But there’s clearly enough of a CPU load when loading a new web page that if you have a load average of 50+ at the same time, you will be starved for CPU in the loading process, and probably won’t get all the http requests out quickly enough.

So I think this is firmly one of those “real improvement” patches. Good job. Group scheduling goes from “useful for some specific server loads” to “that’s a killer feature”.

Linus

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