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growisofs -speed=2 вместо скорости 2х имею 4х - почему ?

 


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привод NEC 4551A c патченной прошивкой 2006 года v.1.09


/sbin/hdparm -i /dev/sr0

/dev/sr0:

Model=_NEC DVD_RW ND-4551A, FwRev=1-09, SerialNo=
Config={ Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no

* signifies the current active mode




во время записи болванки DVD+R DL для xbox вижу, что скорость совсем не 2х, а в основном держится в 99% времени на 4х.


growisofs -use-the-force-luke=dao -use-the-force-luke=break:1913760 -dvd-compat -speed=2 -Z /dev/sr0=/home/xbox/game/Minecraft/complex-minecraft.iso

Executing 'builtin_dd if=/home/xbox/game/Minecraft/complex-minecraft.iso of=/dev/sr0 obs=32k seek=0'
/dev/sr0: splitting layers at 1913760 blocks
/dev/sr0: «Current Write Speed» is 4.1x1352KBps.
19759104/7838695424 ( 0.3%) @3.3x, remaining 39:34 RBU 100.0% UBU 1.9%
38862848/7838695424 ( 0.5%) @4.1x, remaining 30:06 RBU 100.0% UBU 94.4%
57966592/7838695424 ( 0.7%) @4.1x, remaining 26:50 RBU 99.9% UBU 94.4%
77070336/7838695424 ( 1.0%) @4.1x, remaining 26:51 RBU 100.0% UBU 94.4%
96174080/7838695424 ( 1.2%) @4.1x, remaining 25:29 RBU 100.0% UBU 94.4%


6760136704/7838695424 (86.2%) @4.1x, remaining 3:17 RBU 100.0% UBU 94.4%
6779240448/7838695424 (86.5%) @4.1x, remaining 3:13 RBU 100.0% UBU 94.4%
6798376960/7838695424 (86.7%) @4.1x, remaining 3:10 RBU 99.9% UBU 94.4%
6817480704/7838695424 (87.0%) @4.1x, remaining 3:06 RBU 99.9% UBU 94.4%
6836584448/7838695424 (87.2%) @4.1x, remaining 3:03 RBU 100.0% UBU 94.4%


7832109056/7838695424 (99.9%) @4.1x, remaining 0:01 RBU 19.6% UBU 94.4%
builtin_dd: 3827488*2KB out @ average 4.0x1352KBps
/dev/sr0: flushing cache
/dev/sr0: closing track
/dev/sr0: closing disc
/dev/sr0: reloading tray




Почему скорость не 2х ?


Ответ на: комментарий от darkenshvein

а как вы это поняли ? судя по выводу wodim - поддерживает для DVD (правда про DVD+r DL ни слова)


wodim -prcap
Device was not specified. Trying to find an appropriate drive...
Detected CD-R drive: /dev/cdrw
Using /dev/cdrom of unknown capabilities
Device type : Removable CD-ROM
Version : 5
Response Format: 2
Capabilities :
Vendor_info : '_NEC '
Identification : 'DVD_RW ND-4551A '
Revision : '1-09'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.

Drive capabilities, per MMC-3 page 2A:

Does read CD-R media
Does write CD-R media
Does read CD-RW media
Does write CD-RW media
Does read DVD-ROM media
Does read DVD-R media
Does write DVD-R media
Does read DVD-RAM media
Does write DVD-RAM media
Does support test writing

Does read Mode 2 Form 1 blocks
Does read Mode 2 Form 2 blocks
Does read digital audio blocks
Does restart non-streamed digital audio reads accurately
Does support Buffer-Underrun-Free recording
Does read multi-session CDs
Does read fixed-packet CD media using Method 2
Does not read CD bar code
Does read R-W subcode information
Does not return R-W subcode de-interleaved and error-corrected
Does read raw P-W subcode data from lead in
Does return CD media catalog number
Does return CD ISRC information
Does support C2 error pointers
Does not deliver composite A/V data

Does play audio CDs
Number of volume control levels: 256
Does support individual volume control setting for each channel
Does support independent mute setting for each channel
Does not support digital output on port 1
Does not support digital output on port 2

Loading mechanism type: tray
Does support ejection of CD via START/STOP command
Does not lock media on power up via prevent jumper
Does allow media to be locked in the drive via PREVENT/ALLOW command
Is not currently in a media-locked state
Does not support changing side of disk
Does not have load-empty-slot-in-changer feature
Does not support Individual Disk Present feature

Maximum read speed: 8467 kB/s (CD 48x, DVD 6x)
Current read speed: 8467 kB/s (CD 48x, DVD 6x)
Maximum write speed: 8467 kB/s (CD 48x, DVD 6x)
Current write speed: 8467 kB/s (CD 48x, DVD 6x)
Rotational control selected: CLV/PCAV
Buffer size in KB: 2048
Copy management revision supported: 1
Number of supported write speeds: 6
Write speed # 0: 8467 kB/s CLV/PCAV (CD 48x, DVD 6x)
Write speed # 1: 7056 kB/s CLV/PCAV (CD 40x, DVD 5x)
Write speed # 2: 5645 kB/s CLV/PCAV (CD 32x, DVD 4x)
Write speed # 3: 4234 kB/s CLV/PCAV (CD 24x, DVD 3x)
Write speed # 4: 2822 kB/s CLV/PCAV (CD 16x, DVD 2x)
Write speed # 5: 1411 kB/s CLV/PCAV (CD 8x, DVD 1x)

Supported CD-RW media types according to MMC-4 feature 0x37:
Does write multi speed CD-RW media
Does write high speed CD-RW media
Does write ultra high speed CD-RW media
Does write ultra high speed+ CD-RW media

Sky777 ()

Почему скорость не 2х?

Потому, что когда-то хомячки не различали скорость записи и скорость чтения. Приходилось фирмам за ними (этими скоростями) гонятся. А когда ЦА поняла, что скорость записи это не главное - уже винты стоили копейки.

ziemin ★★ ()
Ответ на: комментарий от darkenshvein

так для xbox360 я болванки то закатываю.



потому что привод не поддерживает



попробовал на -speed=1 - эффект тот же, в основном скорость была 4.1

Но иногда скорости и занижались кратковременно - значит привод все-таки поддерживает меньшие скорости ?

5549522944/7838695424 (70.8%) @3.9x, remaining 6:57 RBU 100.0% UBU 94.4%
5562990592/7838695424 (71.0%) @2.9x, remaining 6:55 RBU 100.0% UBU 83.3%
5582094336/7838695424 (71.2%) @4.1x, remaining 6:51 RBU 100.0% UBU 94.4%


6078988288/7838695424 (77.6%) @4.1x, remaining 5:20 RBU 99.9% UBU 94.4%
6092357632/7838695424 (77.7%) @2.9x, remaining 5:17 RBU 100.0% UBU 53.7%
6111133696/7838695424 (78.0%) @4.1x, remaining 5:14 RBU 99.8% UBU 94.4%


5001347072/7838695424 (63.8%) @4.1x, remaining 8:39 RBU 100.0% UBU 94.4%
5015306240/7838695424 (64.0%) @3.0x, remaining 8:37 RBU 100.0% UBU 16.7%
5034409984/7838695424 (64.2%) @4.1x, remaining 8:34 RBU 100.0% UBU 94.4%


3908829184/7838695424 (49.9%) @4.1x, remaining 11:35 RBU 100.0% UBU 94.4%
3921051648/7838695424 (50.0%) @2.6x, remaining 11:35 RBU 100.0% UBU 13.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:38 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:41 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:45 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:48 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:51 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:55 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 11:58 RBU 100.0% UBU 100.0%
3921051648/7838695424 (50.0%) @0.0x, remaining 12:01 RBU 100.0% UBU 100.0%
3921903616/7838695424 (50.0%) @0.2x, remaining 12:05 RBU 100.0% UBU 94.4%
3937337344/7838695424 (50.2%) @3.3x, remaining 12:02 RBU 100.0% UBU 87.0%
3956441088/7838695424 (50.5%) @4.1x, remaining 11:58 RBU 100.0% UBU 94.4%
3975544832/7838695424 (50.7%) @4.1x, remaining 11:55 RBU 100.0% UBU 94.4%


3251503104/7838695424 (41.5%) @4.1x, remaining 13:32 RBU 100.0% UBU 94.4%
3264872448/7838695424 (41.7%) @2.9x, remaining 13:31 RBU 100.0% UBU 88.9%
3283976192/7838695424 (41.9%) @4.1x, remaining 13:27 RBU 100.0% UBU 94.4%

Sky777 ()
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