Re: cdrecord kernel problems

From: Paul Barton-Davis (pbd@Op.Net)
Date: Wed Apr 05 2000 - 21:19:20 EST


>From: Thomas Molina <tmolina@home.com>
>Date: Wed, 5 Apr 2000 15:58:10 -0500 (CDT)
>Subject: cdrecord kernel problems

>tracks. If I'm on the cdrecord console when one track ends and another
>track starts then no problem. If I switch consoles, and stay on the
>other console when one track ends and the next one begins, then BOOM.

if you're talking about virtual terminal switching, which i think you
are, its not exactly suprising its causing you problems.

as was recently mentioned on this list, the console switch is just
about the worst place in the kernel in terms of a period of time
during which interrupts are masked. switching VT's at any point during
a CD roasting session is just asking for trouble. I can't remember the
length of the interrupt mask, but it could have been as much as
200msec or more.

even on my dual processor system, and even with a huge FIFO between
cdrecord and the toaster, i tend to treat a burn session as delicate,
fragile egg, and sit back or go get a drink. i would certainly not
switch VT's during the process, ever.

--p

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