On Sat, 3 Nov 2012, O. Hartmann wrote:
Am 11/03/12 15:17, schrieb Mark Felder:
On Sat, 3 Nov 2012 21:18:55 +0800
Alie Tan <a...@affle.com> wrote:
Hi,
No offence, just curious about scheduler and its functionality.
What is the different between this two that makes FreeBSD performance far
behind DragonFly BSD? http://www.dragonflybsd.org/release32/
I don't have any details but I do know that Dragonfly has been putting a lot of
work into their scheduler. Hopefully some of that will trickle back our way.
Obviously they made the right decissions, but a single benchmark with a
DB server like postgresql doesn't tell the whole story. Let's see what
Phoronix will come up with. I'd like to see some more benchmarks of
DragonFly 3.2.
I doubt that the DragonFly scheduler approaches will go/flow easily into
FreeBSD. But I'd like to see it, even dumping ULE for a better approach.
It's not the scheduler. It's lock contention in the vm and buffer cache.
The scheduler can only schedule what is runnable. We are working to
address this problem.
Thanks,
Jeff
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