Bug 5371

Summary:	Really slow dvd burning
Product:	IO/Storage	Reporter:	Jarkko Haapalainen (jarkko.haapalainen)
Component:	IDE	Assignee:	Bartlomiej Zolnierkiewicz (bzolnier)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	normal	CC:	akpm, bunk, protasnb
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.4.31, 2.6.10, 2.6.13	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	Burning log and info about my system Nother burning log in single user mode Third burning log when tried to set drive parameters Output of dmesg Captured profile

Description Jarkko Haapalainen 2005-10-05 06:52:21 UTC

Most recent kernel where this bug did not occur: none
Distribution: Gentoo Linux
Hardware Environment: LG LS70 Express laptop with dual-layer burner
Software Environment: dvd+rw-tools-5.21.4.10.8, kernel 2.6.13.2
Problem Description:

DVD burning is very slow about 0.5x and there is high cpu usage (load average:
1.78, 1.41, 1.41) even the dma is on. This has been in discussion in Gentoo
Forums, but no one have solution for this. Laptop is fairly new and using Intel
915GM chipset and has dual-layer burner (TSSTcorpCD/DVDW TS-L632B).

I have tested many different type of kernel configurations and kernel versions
2.4.31 (ide-scsi), 2.6.10, 2.6.13 and 2.6.13-archck6.2 with same problem and
trying to set different kombinations of settings with hdparm to the drive. No luck.

Maybe there is problem in ide-cd or chipset driver (PIIx), don't know. I tried
with 2.4.31 kernel ide-scsi burning also with no success, same problems.

Normal CD's seems to be ok and working.

Maybe this bug report is duplicate of #4617 but I don't want to decide that.

Steps to reproduce:
Try to burn DVD's with my hardware.

Comment 1 Jarkko Haapalainen 2005-10-05 07:00:38 UTC

Created attachment 6226 [details]
Burning log and info about my system

Comment 2 Jarkko Haapalainen 2005-10-05 07:01:52 UTC

Created attachment 6227 [details]
Nother burning log in single user mode

Comment 3 Jarkko Haapalainen 2005-10-05 07:02:51 UTC

Created attachment 6228 [details]
Third burning log when tried to set drive parameters

Comment 4 Jarkko Haapalainen 2005-10-05 07:03:41 UTC

Created attachment 6229 [details]
Output of dmesg

Comment 5 Andrew Morton 2005-10-10 17:01:31 UTC

It would be useful if you could generate a kernel profile during
the actual burning operation.

See Documentation/basic_profiling.txt

Thanks.

Comment 6 Jarkko Haapalainen 2005-10-11 02:30:03 UTC

Created attachment 6274 [details]
Captured profile

Attached the "captured_profile" and this is what I did and outputs of cmd's (I
stopped the burning process in 1.0% with CTRL+C).

# readprofile -r
# growisofs -Z /dev/hdb=image.iso
Executing 'builtin_dd if=image.iso of=/dev/hdb obs=32k seek=0'
/dev/hdb: "Current Write Speed" is 4.1x1385KBps.
    655360/4696774656 ( 0.0%) @0.1x, remaining 716:34
   3604480/4696774656 ( 0.1%) @0.6x, remaining 217:00
   5210112/4696774656 ( 0.1%) @0.3x, remaining 195:06
   7536640/4696774656 ( 0.2%) @0.5x, remaining 165:55
   9207808/4696774656 ( 0.2%) @0.4x, remaining 169:41
  11108352/4696774656 ( 0.2%) @0.4x, remaining 161:41
  13041664/4696774656 ( 0.3%) @0.4x, remaining 155:37
  16285696/4696774656 ( 0.3%) @0.7x, remaining 143:41
  18022400/4696774656 ( 0.4%) @0.4x, remaining 142:47
  19857408/4696774656 ( 0.4%) @0.4x, remaining 141:18
  20774912/4696774656 ( 0.4%) @0.2x, remaining 150:03
  22872064/4696774656 ( 0.5%) @0.4x, remaining 146:27
  23953408/4696774656 ( 0.5%) @0.2x, remaining 149:33
  25493504/4696774656 ( 0.5%) @0.3x, remaining 152:41
  26836992/4696774656 ( 0.6%) @0.3x, remaining 153:42
  28114944/4696774656 ( 0.6%) @0.3x, remaining 154:59
  29753344/4696774656 ( 0.6%) @0.3x, remaining 156:51
  31784960/4696774656 ( 0.7%) @0.4x, remaining 154:06
  33751040/4696774656 ( 0.7%) @0.4x, remaining 151:58
  35913728/4696774656 ( 0.8%) @0.5x, remaining 151:24
  37388288/4696774656 ( 0.8%) @0.3x, remaining 151:37
  39518208/4696774656 ( 0.8%) @0.5x, remaining 149:16
  42270720/4696774656 ( 0.9%) @0.6x, remaining 146:48
  43941888/4696774656 ( 0.9%) @0.4x, remaining 146:28
  46202880/4696774656 ( 1.0%) @0.5x, remaining 144:16
/dev/hdb: flushing cache
/dev/hdb: stopping de-icing
/dev/hdb: writing lead-out
/dev/hdb: reloading tray
# readprofile -m /boot/System.map-2.6.14-rc3 > captured_profile

Comment 7 Bartlomiej Zolnierkiewicz 2006-01-12 11:12:05 UTC

Is the problem still present in 2.6.15?

> hda: FUJITSU MHV2060AT, ATA DISK drive
> hdb: TSSTcorpCD/DVDW TS-L632B, ATAPI CD/DVD-ROM drive

Placing HDD and CD on the same channel is not recommended (unfortunately we can
do nothing about it because it is a laptop) however I don't know what the actual
performance impact can be considered as normal.  Maybe the chipset is in the
combined mode (I'm just thinking loudly for now as this will need some reading
of ICH6 datasheet and maybe adding debugging patch).

Comment 8 Ramiro 2006-02-20 10:19:00 UTC

Hello 
Just to confirm that I have experienced the same bug here, on a compal d75
laptop with the same Intel 915GM chipset and DVD burner.
I have the same issues with 2.6.8 Debian Sarge kernel and 2.6.15 on Etch.

I have tried OpenBSD and it burns fine at 3x speed(just to test and discard a
hardware failure).

If you need further information I will be pleased to help you.

Thank you very much.

Ramiro
ea1abz@gmail.com

Comment 9 Natalie Protasevich 2007-07-08 12:02:23 UTC

Ramiro,
Have you tested with latest kernel?
Thanks.

Comment 10 Adrian Bunk 2007-09-09 09:12:56 UTC

Please reopen this bug if it's still present with kernel 2.6.22.