New Scheduler Available for FreeBSD

flynn_nrg writes "Luigi Rizzo, one of the FreeBSD developers, has just finished the code for a new scheduler. From the announcement: '...as promised, a first version of the Proportional Share scheduler that we developed is available here. These are for a recent -STABLE (i think any version from 4.4 should work; the only 3 files modified are kern_synch.c, kern_switch.c and proc.h, plus a one-line change to kern_exit.c). I have tested it a little bit on a diskless system, and it seems to survive running a full X session with the usual set of xterm, netscape etc. while i do a "renice" of the processes and even switch back and forth between schedulers. But do not trust this yet for a production system!' Read the full post here."

Comments

Re:KARMA WHORE !!!!

[Buck2]

You're so cute when you do that.

Re:0(1) scheduler

[dimator]

I prefer ")1(O" just to throw people off.

Re:Why?

[Waffle Iron]

What is the purported advantage of the new scheduler?

Doesn't anybody read the submitters' article summaries any more? It says right at the top of this page that the new scheduler is Proportional. That's the advantage. We can therefore infer that the old one is inferior for a related reason: it's not Proportional.

I'm all for good proportions. Kudos to the implementors. Keep up the good work.

Here is a great reason to prefer BSD

[sawilson]

http://uptime.netcraft.com/up/today/top.avg.html

You'll notice that 45 of those top 50 are BSD
machines. Of those 45, 19 are FreeBSD boxes.
You'll notice 1 Linux box. It's nice to see that
leading industry sites like bongload.com and
twobigirls.com have benefited so much from the
stability of BSD.