30 Mar
2017
30 Mar
'17
9:46 p.m.
On Thu, 30 Mar 2017 16:06:26 +0200
Ralf Mardorf <ralf.mardorf(a)alice-dsl.net> wrote:
I've read the wiki a few times and thought about rewriting it, but
that's a lot of work, and I really don't like very much to remove
other's work..
I think the opening sentence regarding latency is ok by it self, it's
just in the wrong place.. It should be in a section dealing with
latency.. IMO the wiki needs a different introduction.
Again, I don't claim that it's absolutely
irrelevant to e.g. compile
with "Timer Frequency is set to 1000Hz (CONFIG_HZ_1000=y" but usually
hrtimer is used by default, e.g. by Qtractor. To optimise more for
e.g. MIDI usage users should consider to run jack2 with -Xalsarawmidi.
AFAIK, the ticker isn't very relevant now days.. For instance the
archlinux -rt kernel uses high resolution timers (probably based on
your hardware's TSC) and is much more accurate than the ticker based
scheduling ever was.
I just asked you to help to get the Wiki up to date
and to _discuss_
controversial opinions, as well to explain some things that aren't
explained.
I can't understand the resistance and hostilities. What's wrong with
trying to make the Wiki better? It was good, but seemingly isn't up to
date.
I suspect that if you want to get the wiki updated you'd have to do it
yourself :)
"Warning: Enabling threadirqs seems to be causing
system lockups in
conjunction with usb devices in at least some kernel versions starting
with 3.13 and including at least 3.14-rc2. See for example
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1279081 and
http://www.spinics.net/lists/linux-usb/msg102504.html also linked from
there. EDIT: The changelog seems to indicate that this has been fixed
in the 3.13.6 vanilla kernel. (Search for threadirqs in
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6)"
No such kernel is still provided by Arch Linux, even the LTS kernel is
4.9.18.
AFAIK, you can safely remove that part.
Does somebody need flash for pro-audio?
I'd say that no one should use flash at all, but it seems to me like a
very special case and could probably be safely deleted, or maybe moved
to a tip and tricks page or something similar.
--
Joakim