Slow writer...
Hi all :))
I've installed a PlexWriter Premium (52x) in my system, and the
highest speed I can achieve with it is 24x with data and 15x with audio (the speed difference is quite strange :??). The hard disk is UDMA5, so it should provide the data at 52x. This is the info for the hard disk:
/dev/root:
Model=ST340016A, FwRev=3.05, SerialNo=3HS040AC
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78165360 IORDY=on/off, tPIO={min:240,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 udma3 udma4 *udma5 AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version: 1 2 3 4 5
As you can see, the udma5 mode is active, and this is a test from
hdparm on the same disk:
/dev/root:
Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/sec
Am I doing something wrong, like not tuning correctly something
in the disk? I am using a DIY box with Linux 2.4.21, CPU Duron 850, and no processes are running while burning in order to not disturb the writing process. I'm afraid that DMA is not working properly or maybe the motherboard is damaged or something like that :??
Thanks in advance :)
Raúl Núñez de Arenas Coronado
Signature · 2 lines
Linux Registered User 88736 http://www.pleyades.net & http://raul.pleyades.net/
Quoted 25 lines · DervishD
Hi all :))
I've installed a PlexWriter Premium (52x) in my system, and the
highest speed I can achieve with it is 24x with data and 15x with audio (the speed difference is quite strange :??). The hard disk is UDMA5, so it should provide the data at 52x. This is the info for the hard disk:
/dev/root:Model=ST340016A, FwRev=3.05, SerialNo=3HS040AC
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78165360 IORDY=on/off, tPIO={min:240,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 udma3 udma4 *udma5 AdvancedPM=no WriteCache=enabled
Drive conforms to: device does not report version: 1 2 3 4 5As you can see, the udma5 mode is active, and this is a test from
hdparm on the same disk:
Quoted 8 lines
/dev/root:
Timing buffered disk reads: 64 MB in 1.58 seconds = 40.51 MB/secAm I doing something wrong, like not tuning correctly something
in the disk? I am using a DIY box with Linux 2.4.21, CPU Duron 850, and no processes are running while burning in order to not disturb the writing process. I'm afraid that DMA is not working properly or maybe the motherboard is damaged or something like that :??
Questions:
- Is the cd writer on a different channel?
- What ide adapter are you using?
- Is dma enabled on the cd writer?
- What cdrecord version are you using?
You should try 2.5.73 as well and see if it makes any difference. Make sure to use -dev=/dev/hdc (or whatever your cd-rw drive is) and _don't_ use ide-scsi (just ide-cd)
Signature · 1 line
Jens Axboe
Hi Jens, and thanks a lot for answering :)
* Jens Axboe <[email protected]> dixit:
Quoted 1 line
- Is the cd writer on a different channel?
Yes, the hard disk is primary master, the writer secondary
master.
Quoted 1 line
- What ide adapter are you using?
The VP_IDE, with a VIA 82c686b chipset.
Quoted 1 line
- Is dma enabled on the cd writer?
Yes, if I use the IDE-CD driver, hdparm reports that the writer
is UDMA2 capable
cd:
Model=PLEXTOR CD-R PREMIUM, FwRev=1.00, SerialNo=013347 Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 IORDY=on/off, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2
AdvancedPM=no
Quoted 1 line
- What cdrecord version are you using?
2.00. Latest is 2.00.3, although I don't know if it is stable,
I've seen it this morning.
Quoted 3 lines
You should try 2.5.73 as well and see if it makes any difference. Make sure to use -dev=/dev/hdc (or whatever your cd-rw drive is) and _don't_ use ide-scsi (just ide-cd)
Currently I have a DIY linux box, and I'm not sure if I can test
a 2.5 kernel without updating lots of software. I've tested with 2.4.18 (which AFAIK has another IDE driver) and the same happens. I think that maybe the motherboard is damaged :((
I'll try the newer cdrecord (if it is stable) and, if that
doesn't work, I may consider testing 2.5
Thanks for your answer :)
Raúl Núñez de Arenas Coronado
Signature · 2 lines
Linux Registered User 88736 http://www.pleyades.net & http://raul.pleyades.net/