HD Speed

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1

Hi,

how to resolve this?

Model=SAMSUNG SP0411N , FwRev=TW100-13, SerialNo=S01JJ20L336006
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78242976
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 udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 0: ATA/ATAPI-1,2,3,4,5,6,7

sda:<7>sata_nv 0000:00:08.0: version 3.5
sata_nv 0000:00:08.0: PCI INT A -> Link[APSI] -> GSI 23 (level, low) -> IRQ 23
sata_nv 0000:00:08.0: setting latency timer to 64
scsi2 : sata_nv
scsi3 : sata_nv
ata3: SATA max UDMA/133 cmd 0x9f0 ctl 0xbf0 bmdma 0xd800 irq 23
ata4: SATA max UDMA/133 cmd 0x970 ctl 0xb70 bmdma 0xd808 irq 23
ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)

#hdparm -X70 /dev/sda

/dev/sda:
setting xfermode to 70 (UltraDMA mode6)
HDIO_DRIVE_CMD(setxfermode) failed: Invalid exchange

nvidia 6100

udma2 ???

2

hdparm can not set speeds on sata devices.

You could have a look at sdparm and see if it will accomplish what you are looking for.

sdparm(8) - Linux man page

3

Nothing

hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 1272 MB in 2.00 seconds = 636.00 MB/sec
Timing buffered disk reads: 86 MB in 3.01 seconds = 28.60 MB/sec

HD is IDE udma6, motherboard udma/133

how to adjust for udma6 on opensuse 11.2 M2

4

Hi, see log boot, I found “<4> 1.373435] ata1.00: limited to UDMA/33 due to 40-wire cable”, but cable is 80, what is wrong?

libata version 3.00 loaded.
<7> 1.210260] pata_amd 0000:00:06.0: version 0.4.1
<7> 1.210315] pata_amd 0000:00:06.0: setting latency timer to 64
<6> 1.210417] scsi0 : pata_amd
<6> 1.210544] scsi1 : pata_amd
<6> 1.211451] ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xf000 irq 14
<6> 1.211454] ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xf008 irq 15
<6> 1.373399] ata1.00: ATA-7: SAMSUNG SP0411N, TW100-13, max UDMA/133
<6> 1.373404] ata1.00: 78242976 sectors, multi 16: LBA48
<7> 1.373429] ata1: nv_mode_filter: 0x7f39f&0x7f01f->0x7f01f, BIOS=0x7f000 (0xc7000000) ACPI=0x7f01f (15:600:0x13)
<4> 1.373435] ata1.00: limited to UDMA/33 due to 40-wire cable
<6> 1.381333] ata1.00: configured for UDMA/33
<5> 1.381463] scsi 0:0:0:0: Direct-Access ATA SAMSUNG SP0411N TW10 PQ: 0 ANSI: 5
<5> 1.381677] sd 0:0:0:0: [sda] 78242976 512-byte hardware sectors: (40.0 GB/37.3 GiB)
<5> 1.381695] sd 0:0:0:0: [sda] Write Protect is off
<7> 1.381698] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
<5> 1.381723] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn’t support DPO or FUA
<6> 1.381821] sda:<7>ata2: port disabled. ignoring.
<4> 1.387799] sda1 sda2
<5> 1.387939] sd 0:0:0:0: [sda] Attached SCSI disk
<6> 1.390533] BIOS EDD facility v0.16 2004-Jun-25, 1 devices found

5

Hi,

This is possibly a known problem. I have experience similar thing when running kernel 2.6.30-rc7 and asked on LKML a few days ago LKML: Grozdan: Kernel 2.6.30rc7 limits IDE to UDMA33

Still no response from Alan Cox

6

btw, which kernel are you using?

uname -a

?

7

Linux linux-6n6w 2.6.30-rc6-git3-4-default #1 SMP 2009-05-25 14:11:59 +0200 i686 athlon i386 GNU/Linux

Opensuse 11.2 M2

8

I will report back this to Alan, just so he knows I’m not the only one with this problem when using kernel 2.6.30

9

Got reply back from Alan. You may need to patch the kernel-source to fix the problem & recompile it

LKML: Alan Cox: Re: Kernel 2.6.30rc7 limits IDE to UDMA33

10

where is the patch?

is how?

11

the patch is in the reply, the “Get diff” at the left - http://lkml.org/lkml/diff/2009/6/5/172/1

save it to a file, say kernel.diff
copy it to /usr/src/linux
cd to /usr/src/linux
apply the patch: patch -p1 < kernel.diff
configure/compile the kernel - make sure in general setup you change the local version -default to -somethingcustom

12

Alternatively, if you do not want to compile the kernel, you can force 80-wire cables with a boot parameter

libata.force=80c

to make it permament, add the above to /boot/grub/menu.lst

something like

title openSUSE 11.1 - 2.6.30-rc7-git4 Neutrino
    root (hd0,0)
    kernel /boot/vmlinuz-2.6.30-rc7-git4-neutrino root=/dev/sda1 resume=/dev/sda3 splash=silent elevator=as **libata.force=80c** showopts vga=0x317
    initrd /boot/initrd-2.6.30-rc7-git4-neutrino
13

libata.force=80c on menu.lst

/dev/sda:
Timing cached reads: 1252 MB in 2.00 seconds = 625.98 MB/sec
Timing buffered disk reads: 160 MB in 3.02 seconds = 53.06 MB/sec

thanks very very much