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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Re: growisofs can't handle write speed

2004-11-02 Thread Andy Polyakov 
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.

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...

GET [CURRENT] PERFORMANCE:
~ Speed Descriptor#0:... [EMAIL PROTECTED]/s
~ Speed Descriptor#1:... [EMAIL PROTECTED]/s
It's known  problem which growisofs (it interprets lowest speed reported 
by unit firmware as 1x and your unit offers only 4x and 8x for this 
media), which will be fixed in upcoming release. A.

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growisofs can't handle write speed

2004-10-21 Thread Harald Dunkel 
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Hash: SHA1
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