On Wed, Feb 26, 2003 at 06:43:21PM -0800, ME wrote: > Sorry, I went off on a tangent... > > If you are using an IDE based disk, and have a secondary drive (hdc or > hdd) from which reading is taking place, the intensive IRQ shring could > cause problems. If using a parallel based Zip drive or USB drive from > which to play the sound file, consider copying the sound file to a > mounteddir that is on mounted partition that is part of /dev/hda > somewhere.
I've got a 3ware RAID controller. All my music lives on /dev/sda, which is a 4-disk RAID-10(stripe of mirrors). I tried cat'ing the file to /dev/null before playing it so that it would be in the buffer cache. It still skipped. > Also, are you into swap extensively when you hear the choppy sound? > And what drive has your swap? /dev/sda also has my swap, but I'm only using 32B (yes, bytes) of swap, out of ~1000MB. > Peter Jay Salzman said: > > > heh. wasn't quite a request, but thanks anyway. :) it was a "your > > video card is using irq 15. make sure it's not conflicting with > > anything". :) I checked; the video card is the only thing on IRQ 15. The sound card and my USB controller share IRQ 11, but I can transfer files at full speed from my USB keychain-disk without any sound problems. > > this is the kind of thing i can't seem to remember. i google for it > > whenever i need it. i should throw it up on my web page just so i > > don't bother google with the same question over and over. :) > > > > thanks, > > pete > > > > > > begin ME <[EMAIL PROTECTED]> > >> Peter Jay Salzman said: > >> > i don't know my irq numbers. is 15 usually assigned to something like > >> > the timer or usb? > >> > >> On Systems with IDE based drives, 15 is often secondary IDE. > >> > >> 0=cpu/timer * > >> 1=keyboard * > >> 2=Cascade to upper 8 irq * > >> 3=/dev/ttyS1 > >> 4=/dev/ttyS0 > >> 5=often free or sound card or extra par port or serial port > >> 6=Floppy Drive Controller # > >> 7=parallel port #1 # > >> 8=clock/real time clock * > >> 9=cascade from 2, effectively "same as "2" but not quite the same * > >> 10= often free or sound or usb or firewire or... > >> 11= often free or sound or usb or firewire or... > >> 12=ps2 mouse if you have one # > >> 13=Math Co * > >> 14=Primary IDE or SCSI on some systems # > >> 15=Secondary IDE # > >> > >> Of course with the newer IRQ stuff much is not "set" and unchangeable. > >> The ones I listed above ith a trailing "*" are pretty much set without > >> you > >> given choice. > >> The ones with trailing "#" often use that IRQ resource when present and > >> these are often unchangable, but not always. > >> The serial ports are usually set as above, butcan often be altered. > >> > >> The above describes older x86 based PC IRQ. > >> > >> With newer systems and PCI with resource sharing and the virtual mapping > >> of "extra IRQ" you can find caes where your x86 based linux system will > >> report IRQ higher than 15 when you cat /proc/interrupts > >> > >> Enjoy, > >> -ME > > _______________________________________________ > > vox-tech mailing list > > [EMAIL PROTECTED] > > http://lists.lugod.org/mailman/listinfo/vox-tech > > > > > > _______________________________________________ > vox-tech mailing list > [EMAIL PROTECTED] > http://lists.lugod.org/mailman/listinfo/vox-tech -- Samuel Merritt OpenPGP key is at http://meat.andcheese.org/~spam/spam_at_andcheese_dot_org.asc Information about PGP can be found at http://www.mindspring.com/~aegreene/pgp/
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