Re: growisofs can't handle write speed

2004-11-02 Thread Harald Dunkel
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Andy Polyakov wrote:
|> I've got a problem with dvd+rw-tools (version 5.21.4.10.8-1)
|> on amd64, gcc3-4:
|>
|> If I try to write an 8x DVD-R (Verbatim), then the writer
|> (LG GSA-4082B, firmware A208) starts with 4x as expected,
|> but later it drops to some arbitrary value (about 2x).
|> After a while it goes up to 4x again, but it never reaches
|> the promissed 8x.
|
|
| Keep in mind that if system for whatever reason can not maitain data
| flow at required rate, unit will have to take idle revolutions and
| depending on firmware implementation performance loss can be as abrupt
| as you describe.
|
According to Verbatim's service rep their medias simply
don't work very well with LG's GSA-4082B. Of course he
has blamed LG for that. But to be sure I will avoid both
LG drives and Verbatim medias for the future.
|> Below you can find a sample session.
|>
|> Writing the old Verbatim DVD-R 4x medias was never a problem.
|> If I use "growisofs -speed=4" then there is no problem with
|> the 8x medias, either (except for the lost performance).
|
|
| Given the speed descriptors presented below you should try -speed=1 to
| tell you unit to limit recording velocity at 4x for 8x media...
|
I did not know the problem with -speed=1 vs -speed=4.
For the next DVD to write I will try -speed=1.
Many thanx
Harri
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growisofs can't handle write speed

2004-10-21 Thread Harald Dunkel
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Hi folks,
I've got a problem with dvd+rw-tools (version 5.21.4.10.8-1)
on amd64, gcc3-4:
If I try to write an 8x DVD-R (Verbatim), then the writer
(LG GSA-4082B, firmware A208) starts with 4x as expected,
but later it drops to some arbitrary value (about 2x).
After a while it goes up to 4x again, but it never reaches
the promissed 8x.
Below you can find a sample session.
Writing the old Verbatim DVD-R 4x medias was never a problem.
If I use "growisofs -speed=4" then there is no problem with
the 8x medias, either (except for the lost performance).
???
Regards
Harri
==
# dvd+rw-mediainfo /dev/cdrom
INQUIRY:[HL-DT-ST][DVDRAM GSA-4082B][A208]
GET [CURRENT] CONFIGURATION:
~ Mounted Media: 11h, DVD-R Sequential
~ Media ID:  MCC 02RG20
~ Current Write Speed:   8.0x1385=11080KB/s
~ Write Speed #0:8.0x1385=11080KB/s
~ Write Speed #1:4.0x1385=5540KB/s
GET [CURRENT] PERFORMANCE:
~ Write Performance: 4.0x1385=5540KB/[EMAIL PROTECTED] -> 126741]
~6.0x1385=8310KB/[EMAIL PROTECTED] -> 1236991]
~8.0x1385=11080KB/[EMAIL PROTECTED] -> 2298495]
~ Speed Descriptor#0:02/2298495 [EMAIL PROTECTED]/s [EMAIL PROTECTED]/s
~ Speed Descriptor#1:02/2298495 [EMAIL PROTECTED]/s [EMAIL PROTECTED]/s
READ DVD STRUCTURE[#0h]:
~ Media Book Type:   25h, DVD-R book [revision 5]
~ Legacy lead-out at:2298496*2KB=4707319808
READ DISC INFORMATION:
~ Disc status:   blank
~ Number of Sessions:1
~ State of Last Session: empty
~ Number of Tracks:  1
READ TRACK INFORMATION[#1]:
~ Track State:   invisible incremental
~ Track Start Address:   0*2KB
~ Next Writable Address: 0*2KB
~ Free Blocks:   2297888*2KB
~ Track Size:2297888*2KB
READ CAPACITY:  1*2048=2048
# growisofs -dvd-compat -Z /dev/cdrom=/mnt/movie.iso
Executing 'builtin_dd if=/mnt/movie.iso of=/dev/cdrom obs=32k seek=0'
/dev/cdrom: "Current Write Speed" is 8.2x1385KBps.
~   7798784/4681451520 ( 0.2%) @1.6x, remaining 59:55
~  26312704/4681451520 ( 0.6%) @3.9x, remaining 26:32
~  44793856/4681451520 ( 1.0%) @3.9x, remaining 20:42
~  63275008/4681451520 ( 1.4%) @3.9x, remaining 19:27
~  81756160/4681451520 ( 1.7%) @3.9x, remaining 17:48
:
:
2635694080/4681451520 (56.3%) @3.9x, remaining 6:11
2654208000/4681451520 (56.7%) @3.9x, remaining 6:08
2672721920/4681451520 (57.1%) @3.9x, remaining 6:05
2691235840/4681451520 (57.5%) @3.9x, remaining 6:01
2709749760/4681451520 (57.9%) @3.9x, remaining 5:57
2727641088/4681451520 (58.3%) @3.8x, remaining 5:55
2742059008/4681451520 (58.6%) @3.0x, remaining 5:52
2756345856/4681451520 (58.9%) @3.0x, remaining 5:50
2765488128/4681451520 (59.1%) @1.9x, remaining 5:50
2776760320/4681451520 (59.3%) @2.4x, remaining 5:49
2788098048/4681451520 (59.6%) @2.4x, remaining 5:47
2798321664/4681451520 (59.8%) @2.2x, remaining 5:47
2811133952/4681451520 (60.0%) @2.7x, remaining 5:45
2822209536/4681451520 (60.3%) @2.3x, remaining 5:43
2834595840/4681451520 (60.5%) @2.6x, remaining 5:42
2846130176/4681451520 (60.8%) @2.4x, remaining 5:41
2857992192/4681451520 (61.0%) @2.5x, remaining 5:39
2870607872/4681451520 (61.3%) @2.7x, remaining 5:38
2880995328/4681451520 (61.5%) @2.2x, remaining 5:36
2892398592/4681451520 (61.8%) @2.4x, remaining 5:35
2906259456/4681451520 (62.1%) @2.9x, remaining 5:33
2917662720/4681451520 (62.3%) @2.4x, remaining 5:31
2929393664/4681451520 (62.6%) @2.5x, remaining 5:30
2941452288/4681451520 (62.8%) @2.6x, remaining 5:28
2955575296/4681451520 (63.1%) @3.0x, remaining 5:26
2967502848/4681451520 (63.4%) @2.5x, remaining 5:24
2981658624/4681451520 (63.7%) @3.0x, remaining 5:22
2993782784/4681451520 (63.9%) @2.6x, remaining 5:20
3007381504/4681451520 (64.2%) @2.9x, remaining 5:18
3019472896/4681451520 (64.5%) @2.6x, remaining 5:17
3032154112/4681451520 (64.8%) @2.7x, remaining 5:14
3045228544/4681451520 (65.0%) @2.8x, remaining 5:12
3056828416/4681451520 (65.3%) @2.5x, remaining 5:11
3070164992/4681451520 (65.6%) @2.8x, remaining 5:09
3082813440/4681451520 (65.9%) @2.7x, remaining 5:06
3093889024/4681451520 (66.1%) @2.3x, remaining 5:05
3104505856/4681451520 (66.3%) @2.2x, remaining 5:04
3113418752/4681451520 (66.5%) @1.9x, remaining 5:03
3128164352/4681451520 (66.8%) @3.1x, remaining 5:00
3146645504/4681451520 (67.2%) @3.9x, remaining 4:57
3165126656/4681451520 (67.6%) @3.9x, remaining 4:53
3183607808/4681451520 (68.0%) @3.9x, remaining 4:49
3202088960/4681451520 (68.4%) @3.9x, remaining 4:45
3204808704/4681451520 (68.5%) @0.6x, remaining 4:46
3207200768/4681451520 (68.5%) @0.5x, remaining 4:47
3216736256/4681451520 (68.7%) @2.0x, remaining 4:46
3220930560/4681451520 (68.8%) @0.9x, remaining 4:46
3228696576/4681451520 (69.0%) @1.6x, remaining 4:46
3235708928/4681451520 (69.1%) @1.5x, remaining 4:45
3241738240/4681451520 (69.2%) @1.3x, remaining 4:45
3247243264/4681451520 (69.4%) @1.2