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themacboy
n00b
Joined: 24 Apr 2005
Posts: 6
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 Posted: Fri Apr 29, 2005 5:14 pm Post subject: Two IDE disc and DMA problem |
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Hi i read alot about DMA activation in the forum but my problem is other problem, i think.
Lood this hdparm results:
In /dev/hda:
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Model=Maxtor 6Y080P0, FwRev=YAR41VW0, SerialNo=Y30HEDTE
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=160084415
IORDY=on/off, 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=yes: disabled (255) WriteCache=enabled
Drive conforms to: (null):
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In /dev/hdc:
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Model=ST380011A, FwRev=3.06, SerialNo=5JV600YW
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=156301488
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: ATA/ATAPI-6 T13 1410D revision 2:
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U see the diferences? Hda is a newer ata 133 drive of 80gb but kernel dont find him as a udma 6 drive and it not confroms nothig ... sry im really noob i dont know how to explian this.
But know look that dmesg :
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VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8235 (rev 00) IDE UDMA133 controller on pci0000:00:11.1
ide0: BM-DMA at 0xe800-0xe807, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xe808-0xe80f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hda: Maxtor 6Y080P0, ATA DISK drive
hdb: TOSHIBA DVD-ROM SD-M1612, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: ST380011A, ATA DISK drive
hdd: PHILIPS DVDR1640P, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
hda: max request size: 128KiB
hda: Host Protected Area detected.
current capacity is 160084415 sectors (81963 MB)
native capacity is 160086528 sectors (81964 MB)
hda: Host Protected Area disabled.
hda: 160086528 sectors (81964 MB) w/7936KiB Cache, CHS=65535/16/63, UDMA(133)
hda: cache flushes supported
hda: hda1 hda3 < hda5 hda6 hda7 hda8 >
hdc: max request size: 1024KiB
hdc: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=16383/255/63, UDMA(100)
hdc: cache flushes supported
hdc: hdc1 hdc2 < hdc5 hdc6 > hdc3
hdb: ATAPI 48X DVD-ROM drive, 512kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
hdd: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)
libata version 1.10 loaded.
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Here u can see all looks right. Then the question is:
Why when i work in drive /dev/hda my cpu use up to 100%
Thanks in advance. |
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kiksen
Guru
Joined: 24 Jun 2002
Posts: 401
Location: Denmark
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| Posted: Fri Apr 29, 2005 5:55 pm Post subject: |
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putting the CD/DVD drives on the same channel, and the HD's on the other solved a similar problem for me. I know performance will be less than optimal when using a slave drive - the best would be to have a seperate channel for each HD, but it should work a lot better than what you got now. (assuming your problem is similar to what I had)
/kiksen |
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