Date: Mon, 7 Jan 2002 08:58:40 -0500 From: Brian T.Schellenberger <bts@babbleon.org> To: freebsd-questions@freebsd.org Subject: burncd blank/erase/fixate seize all ATA I/O Message-ID: <008322859130712FE7@mail7.nc.rr.com>
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When I am running burncd's blank, erase, or fixate, it seizes all the ata i/o
on the system.
For example, if I try to merely to an
ls -R /
while blanking a CD, there will be *no* output from the command whatsoever
until the blanking operation is completed. Burning the actual data on the
CD, even at 4x (the maximum at which I can burn CD-RWs), is no problem: the
machine is quite usable and the CDs come out fine. But the
blanking/erasing/fixating are just deadly to the use of the machine.
Is this normal? Is there anything I can do? Is there anything that burncd
could do?
I have tried playing with the DMA settings for both ata and atapi, but it
make no difference.
PS: On the other hand, *reading* from the CD seems to be a lot friendlier to
the rest of the system with
hw.ata.atapi_dma: 1
Am I setting myself up for trouble using this? Anybody know why
hw.ata.ata_dma: 1
is the default but the atapi_dma defaults to 0?
PPS: Particulars:
Dell Inspiron 8000. Builtin CD-RW/DVD drive.
atapci0: <Intel ICH2 ATA100 controller> port 0xbfa0-0xbfaf at device 31.1 on
pci0
ata0: at 0x1f0 irq 14 on atapci0
ad0: 45780MB <IC25T048ATDA05-0> [93015/16/63] at ata0-master UDMA100
acd0: CD-RW <TOSHIBA CD-RW/DVD-ROM SD-R2002> at ata0-slave using WDMA2
--
Brian T. Schellenberger . . . . . . . bts@wnt.sas.com (work)
Brian, the man from Babble-On . . . . bts@babbleon.org (personal)
http://www.babbleon.org
-------> Free Dmitry Sklyarov! (let him go home) <-----------
http://www.eff.org http://www.programming-freedom.org
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