[LAD] MidiSport vs. UA25
ralf.mardorf at alice-dsl.net
Sat Sep 26 12:26:53 UTC 2009
Arnout Engelen wrote:
> On Sat, Sep 26, 2009 at 01:29:53PM +0200, Ralf Mardorf wrote:
>> Arnout Engelen wrote:
>>> - increased the rtprio for the USB IRQ handler
>> How can I do this? I only know how to make my Siwssonic USB MIDI device
>> head of the USB devices by Rui's rtirq.
>> Is there something I could change for rtirq, to get less jitter for the
>> USB MIDI device?
> I haven't looked into rtirq yet (I really should)
Hi Arnout :)
or you simply change the USB ports ;).
> , but if I understand
> correctly rtirq does automatically what I did manually: find out which IRQ
> the device you're interested in is connected to, and give that IRQ a
> higher rtprio.
> To see the current rtprio's of your IRQ's, do:
> ps axHo user,lwp,pid,rtprio,ni,command | grep irq
> To increase the rtprio of some irq manually:
> chrt -f -p <prio> <pid>
Thank you :).
>>> - decreased the 'latency_timer' value for my wireless network card and cardbus
>>> - tried to increase 'latency_timer' for the USB controller, but it
>>> remained at 0 - i guess it doesn't support this option
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