hello Rob, --- rob fell <robin.fell@xxxxxxxxxxxx> wrote: > Hello all > > I'm trying to get a gentoo based audio box (primarily Ardour) off > the ground. Despite my best efforts, > I can't eliminate xruns to a level I could live with (10ms+ xruns > every 2 minutes on average seems > excessive - esp. with stereo @ 44k1). There's some captured data at > the very end of this mail. > > My observations are made using; > jackd -v -R -d... -r 44100 -p 128 2>&1 | tee jacklog (i.e. stereo > SB16 @44k1) > and ardour, session open but not actively playing > > I'll present my questions before wandering off into a tedious list > (apologies for length) of stuff I've > already done. Would anyone care to offer an opinion on these > questions; > > 1. Am I expecting too much? Either from my hardware, or the current > state of Linux. > 2. Is there a vital piece of config that I've totally overlooked? > 3. Is there a better way to measure this to home in on the source > of the problem? > 4. Are the xruns incidental to the disk activity - is this all a > symptom of something else? > 5. Insert any other question I should be asking here. > > Thanks in advance for any help/advice offered, I've run out of > ideas. > > Ta > R > > <SNIP> > > The hardware: > Duron 1300MHz, Abit KT7A > 512M PC133 > primary IDE: Seagate ST360021A, QUANTUM FIREBALLP AS40.0 (80 way > ribbon) > secondary IDE: CD/CDRW > AGP graphics card > SB16/128 PCI (i know - it's junk) > 3Com PCI 3c905 > > 0: 674864 XT-PIC timer > 1: 7927 XT-PIC keyboard > 2: 0 XT-PIC cascade > 8: 2 XT-PIC rtc > 9: 1166 XT-PIC Ensoniq AudioPCI > 11: 21381 XT-PIC eth0 > 12: 94912 XT-PIC PS/2 Mouse > 14: 13585 XT-PIC ide0 > 15: 9 XT-PIC ide1 > NMI: 0 > LOC: 674826 > ERR: 114 > MIS: 0 > <SNIP> looking at your IRQ's and the "priority list" at: http://myweb.cableone.net/eviltwin69/Arcana.html#IRQs i see that both your mouse (?!) and your network card seem to have higher priority than your IDE channels (harddisks). i would advice you to try without the network card and not to move your mouse =) and what Mark Knecht said about period size for the SB soundcards is also slightly touched here: http://www.djcj.org/LAU/jack/ your 128 setting might be too small. did you try with 256 or 512? and ofcourse... good luck. ALEX __________________________________________________ Yahoo! Plus For a better Internet experience http://www.yahoo.co.uk/btoffer
