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Re: Low burning speed



DVD+R 16x info:

INQUIRY:                [HL-DT-ST][DVDRAM GSA-4163B][A106]
GET [CURRENT] CONFIGURATION:
 Mounted Media:         1Bh, DVD+R
 Current Write Speed:   16.0x1385=22161KB/s
 Write Speed #0:        16.0x1385=22161KB/s
 Write Speed #1:        16.0x1385=22160KB/s
 Write Speed #2:        12.0x1385=16621KB/s
 Write Speed #3:        12.0x1385=16620KB/s
 Write Speed #4:        8.0x1385=11081KB/s
 Write Speed #5:        8.0x1385=11080KB/s
 Write Speed #6:        4.0x1385=5540KB/s
GET [CURRENT] PERFORMANCE:
 Write Performance:     7.2x1385=9913KB/s@0 -> 15.9x1385=22059KB/s@1871871
                        16.0x1385=22160KB/s@[1871872 -> 2295103]
 Speed Descriptor#0:    02/2295103 R@4.1x1385=5730KB/s W@16.0x1385=22161KB/s
 Speed Descriptor#1:    02/2295103 R@4.1x1385=5730KB/s W@16.0x1385=22160KB/s
 Speed Descriptor#2:    02/2295103 R@4.1x1385=5730KB/s W@12.0x1385=16621KB/s
 Speed Descriptor#3:    02/2295103 R@4.1x1385=5730KB/s W@12.0x1385=16620KB/s
 Speed Descriptor#4:    02/2295103 R@4.1x1385=5730KB/s W@8.0x1385=11081KB/s
 Speed Descriptor#5:    02/2295103 R@4.1x1385=5730KB/s W@8.0x1385=11080KB/s
 Speed Descriptor#6:    02/2295103 R@4.1x1385=5730KB/s W@4.0x1385=5540KB/s
READ DVD STRUCTURE[#0h]:
 Media Book Type:       00h, DVD-ROM book [revision 0]
 Media ID:              MCC/004
 Legacy lead-out at:    2295104*2KB=4700372992
READ DISC INFORMATION:
 Disc status:           appendable
 Number of Sessions:    2
 State of Last Session: empty
 "Next" Track:          2
 Number of Tracks:      2
READ TRACK INFORMATION[#1]:
 Track State:           partial/complete
 Track Start Address:   0*2KB
 Free Blocks:           0*2KB
 Track Size:            2060720*2KB
READ TRACK INFORMATION[#2]:
 Track State:           blank
 Track Start Address:   2062768*2KB
 Next Writable Address: 2062768*2KB
 Free Blocks:           232336*2KB
 Track Size:            232336*2KB
 ROM Compatibility LBA: 266544
FABRICATED TOC:
 Track#1  :             14@0
 Track#AA :             14@2060720
 Multi-session Info:    #1@0
READ CAPACITY:          2060720*2048=4220354560


time test:

tomasz@debian:~$ time dd if=/dev/zero of=/dev/hdc bs=1M count=1000
1000+0 przeczytanych recordów
1000+0 zapisanych recordów
skopiowane 1048576000 bajtów (1,0 GB), 98,1632 sekund, 10,7 MB/s

real    1m38.320s
user    0m0.012s
sys     0m5.952s


Pktcddvd not used, doesn't matter whether growiso is started as root or user. I burned some data using cdrecord+xcdroast again, the average speed was about 7.7 although it complained that dma is off. I checked it with hdparm (of course it was on), then just in case "hdparm -X udma2" and again time test, unfortunatelly no improvement.


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