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Old 09-02-2005, 01:52 AM   #1
hubcapboy
LQ Newbie
 
Registered: Mar 2005
Distribution: Fedora Core 3
Posts: 23

Rep: Reputation: 15
Need more ideas to speed up cd-rom


I've been trying to get some ripping action out of my dvdrw/cdrw combodrive, and it's just not happening.

Drive Model is: Toshiba DVD-ROM SD-R6012

hdparm output:

/dev/cdrom:
Timing O_DIRECT disk reads: 6 MB in 4.07 seconds = 1.47 MB/sec

I calc this out to be 74 min / [ (750MB) / (1.47 MB/sec) * (1min/60sec)]= 9x

first of all... is that right?

second of all... I'm only getting .6x -> .9x on both grip and sound juicer. (with no parinoia)

here is a clip from my init script that is supposed to be speeding up the drive:

/sbin/hdparm -u 1 -d 1 /dev/cdrom
/sbin/hdparm -E 24 /dev/cdrom
/sbin/hdparm -A 1 /dev/cdrom
/sbin/hdparm -a 1024 /dev/cdrom

I even upgraded to fc4 from fc3 this week over this problem... no difference. I've tried scsi emulation, but the only result was the the disk mounted five times, and then ran slowly. I'm dyin here. The rest of the machine lives in a fujitsu laptop, with a 2.4Gz P4, 512Mb RAM, loads of swap (never used, like new). Kernel 2.6.13 (downloaded yesterday)

here's my juicy dmesg clip:

end_request: I/O error, dev hdc, sector 4072
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x51 { IllegalLengthIndication LastFailedSense=0x05 }
ide: failed opcode was: unknown
end_request: I/O error, dev hdc, sector 4080
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x51 { IllegalLengthIndication LastFailedSense=0x05 }
ide: failed opcode was: unknown
end_request: I/O error, dev hdc, sector 4088
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
SELinux: initialized (dev hdc, type iso9660), uses genfs_contexts
hdc: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hdc: drive_cmd: error=0x04 { AbortedCommand }
ide: failed opcode was: 0xef

I've googlelinuxed for a few days now, and all the people who have thrown this error that I can find (none of them have solved thier problems as far as I can tell) have not been able to use thier drive at all. I can use it no problem. it automounts and everything, it's just painfully slow.

This is all I can think to include at the moment, in fact I think it's enough that no one will be interested in sifting through it, but I obviously can't handle this myself. I'm not a programmer, but I deleted my last atrophied, unused windows partition six months ago.

thanks guys/girls


/g
 
Old 09-02-2005, 12:57 PM   #2
hubcapboy
LQ Newbie
 
Registered: Mar 2005
Distribution: Fedora Core 3
Posts: 23

Original Poster
Rep: Reputation: 15
bump, sorry.

/g
 
Old 10-12-2005, 09:13 PM   #3
akshunj
Member
 
Registered: Sep 2002
Location: Atlanta, GA
Distribution: Linux Mint Gloria, Slackware 12.2
Posts: 165

Rep: Reputation: 30
Man, I feel your pain. I have the same error message, and it appears that although I can access the drive as you can, the drive cannot actually be polled. So no program can ascertain whether media has been inserted into the drive or not. Pain in the rear if you want to use HAL and Utopia. I am also sure this relates to a kernel bug. I am still researching this and I will update this thread with my findings.

--Akshun J
 
Old 10-16-2005, 08:19 PM   #4
akshunj
Member
 
Registered: Sep 2002
Location: Atlanta, GA
Distribution: Linux Mint Gloria, Slackware 12.2
Posts: 165

Rep: Reputation: 30
relevant posts from kernel.org mailing list

Unfortunately, our problems are not the same. I believe yours may be a drive firmware issue, inwhich case you may need to check the manufacturer's website for an update.

--Akshun J

Last edited by akshunj; 10-16-2005 at 08:20 PM.
 
  


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