[GLLUG] cdrecord slows machine
Brad Fears
brad@mtsdev.com
09 Oct 2002 06:59:25 -0400
It appears to be an IDE device emulating SCSI (built-in to my laptop,
/dev/scd0), but the output of lsmod is a bit confusing to me:
ide-scsi 10512 0
scsi_mod 107176 3 [sg sr_mod ide-scsi]
ide-cd 33608 0
cdrom 33696 0 [sr_mod ide-cd]
And here are the relevant lines from dmesg:
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: MATSHITA Model: UJDA330 Rev: 1.50
Type: CD-ROM ANSI SCSI revision: 02
I can't set the DMA mode, which I would suspect is a result of the SCSI
emulation.
On Wed, 2002-10-09 at 10:39, Matt Graham wrote:
> On Wednesday 09 October 2002 10:11, after a long battle with technology,
> Adam McDougall wrote:
>
> > On Wed, Oct 09, 2002 at 09:44:47AM -0400, Brad Fears wrote:
> >> Any idea why my machine slows to a crawl when I start the burn
> >> process with cdrecord? It doesn't seem to matter what burn speed is
> >> used, or what type of burn I'm doing (ISO, CDRW erase, etc), it's
> >> always so slow that I can't use the machine while it's burning. The
> >> burn always completely just fine.
> >
> >> I have the latest version of cdrecord, but I get the same results
> >> with other versions also.
>
> > What kernel version?
>
> What's the setup like? Are you using an IDE CD-RW, a SCSI CD-RW, a
> parport CD-RW...? If it's IDE, is it on the same channel as the IDE
> disk that contains your / ? Have you tried turning DMA on for the
> drive if it's IDE? (hdparm -d1 /dev/hdN .) What, if anything, does
> dmesg say? Is cdrecord running at priority -20 or something? It
> doesn't need to, normal priority works fine.
>
> --
> The night passed like a kidney stone: painfully and with the help of
> major sedatives. --T. Delgado, Lyttle Lytton winner, 2001
> There is no Darkness in Eternity/But only Light too dim for us to see
>
>
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