3 Jul
2013
3 Jul
'13
3:26 p.m.
On Wed, 3 Jul 2013 13:27:38 +0100
Harry van Haaren <harryhaaren(a)gmail.com> wrote:
On Wed, Jul 3, 2013 at 8:43 AM, Jeremy Jongepier
<jeremy(a)autostatic.com>wrote;wrote:
Anyone got an idiot's guide for compiling a suitable kernel for debian squeeze?
I don't really have any problems but feel sure I could get more out of this
beast (a quad core AMD), and might get slightly better timing.
--
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
On 07/03/2013 12:19 AM, Harry van Haaren wrote:
Nice article Harry! Some remarks though:
* Is /dev/rtc the kernel timer? I thought it was the device node for
access to the real-time clock. I don't even think it's necessary to
prioritize it anymore because most applications use the kernel timer:
http://wiki.linuxaudio.org/wiki/system_configuration#hardware_timers
I'm far from an expert on timers so I could be wrong, I still find this
a bit of esoteric stuff.
Same here: I wrote that because its in my setup, and AFAIK its the kernel
timer... Just found this article:
https://www.kernel.org/doc/Documentation/rtc.txt It suggests that
/dev/rtc is the "old" RTC, and /dev/rtc0 /dev/rtc1 .. rtcX is the new
system. I have got /dev/rtc0 present on my system. I'll investigate into
whether JACK / the ALSA backend use /dev/rtc, or if it really isn't used
anymore.
* Using setpci in this context is deprecated
unless you're still using
am machine with a PCI bus which I highly doubt:
http://wiki.linuxaudio.org/wiki/system_configuration#pci_bus_latency
I was advised on IRC that the PCI bandwidth reset would help, and it didn't
negatively influence my machine: hence I added it.
lspci -v -t shows that my firewire, cardbus ("CardBus bridge: Texas
Instruments PCIxx12 Cardbus Controller") SD card and multimedia card
readers are on the same branch, connected to the root node. I suppose
rm-modding those kernel modules would ensure better performance (not using
them probably suffices).
The graphics chip is on its own node, also connected directly to the root.
I don't think it'll get in the way.. Setting the latencies won't hurt,
I'll
leave it there for now but add a note that on modern hardware its not
necessary.
Thanks for the feedback! -Harry