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meyerm
Veteran
Joined: 27 Jun 2002
Posts: 1311
Location: Munich / Germany
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 Posted: Fri Feb 13, 2004 2:14 am Post subject: unbelievable slow harddrive |
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Hi,
I've got an inspiron 8200 with ICH3 IDE controller and 2 Hitachi harddisks. The "Intel PIIxn chipset support" is compiled in.
The second disk is ok, but the first... well:
| Code: |
yavin root # hdparm -tT /dev/hdc
/dev/hdc:
Timing buffer-cache reads: 1444 MB in 2.00 seconds = 721.03 MB/sec
Timing buffered disk reads: 86 MB in 3.05 seconds = 28.18 MB/sec
yavin root # hdparm /dev/hdc
/dev/hdc:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 78140160, start = 0
yavin root # hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1412 MB in 2.00 seconds = 705.75 MB/sec
Timing buffered disk reads: 2 MB in 25.50 seconds = 80.32 kB/sec
yavin root # hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 117210240, start = 0
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That's unbelievable slow. What is happening here? Not unmasking IRQ, using generic 16-bit I/O etc. make it (as you can guess) even worse. Can anybody help me? Thank you
PS: dmesg tells me
| Code: |
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH3M: IDE controller at PCI slot 0000:00:1f.1
PCI: Enabling device 0000:00:1f.1 (0005 -> 0007)
ICH3M: chipset revision 2
ICH3M: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdc:DMA, hdd:pio
hda: HITACHI_DK23EA-60, ATA DISK drive
hdb: HL-DT-STCD-RW/DVD-ROM GCC-4240N, ATAPI CD/DVD-ROM drive
Using anticipatory io scheduler
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdc: HITACHI_DK23EB-40, ATA DISK drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 117210240 sectors (60011 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
/dev/ide/host0/bus0/target0/lun0: p1 p2 p3 p4
hdc: max request size: 128KiB
hdc: 78140160 sectors (40007 MB) w/2048KiB Cache, CHS=65535/16/63, UDMA(100)
/dev/ide/host0/bus1/target0/lun0: p1
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| Code: |
yavin root # hdparm -i /dev/hda
/dev/hda:
Model=HITACHI_DK23EA-60, FwRev=00K2A0C1, SerialNo=7Y1648
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117210240
IORDY=yes, 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=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
* signifies the current active mode
yavin root # hdparm -i /dev/hdb
/dev/hdb:
Model=HL-DT-STCD-RW/DVD-ROM GCC-4240N, FwRev=D110, SerialNo=
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:120,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
Drive conforms to: device does not report version:
* signifies the current active mode
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Helena
Veteran
Joined: 02 Apr 2003
Posts: 1114
Location: Den Dolder, The Netherlands
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| Posted: Fri Feb 13, 2004 9:19 am Post subject: |
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Interesting... I have similar problems with my laptop, also using a Hitachi drive: | Code: | OdysseusGentoo root # hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1376 MB in 2.00 seconds = 687.07 MB/sec
Timing buffered disk reads: 72 MB in 3.08 seconds = 23.40 MB/sec
OdysseusGentoo root #
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I don't know hdparm well but I did note that on another Gentoo box the ratio between the 2 timings is 10, here it's like 30. Maybe a buffer problem? | Code: | OdysseusGentoo root # hdparm -i /dev/hda
/dev/hda:
Model=HITACHI_DK23DA-40, FwRev=00J0A0A1, SerialNo=13UHSC
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160
IORDY=yes, 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=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
* signifies the current active mode |
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meyerm
Veteran
Joined: 27 Jun 2002
Posts: 1311
Location: Munich / Germany
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| Posted: Fri Feb 13, 2004 9:56 am Post subject: |
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For me, it looks like you're quite lucky with your timings 
you got almost 700 MB/s from cache which is ok and 30 MB/s from disk which is also ok for a laptop harddisk. As you can see, my second disk (hdc) does have similar values...
But 80 kB/s is faaaar too slow...  |
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Helena
Veteran
Joined: 02 Apr 2003
Posts: 1114
Location: Den Dolder, The Netherlands
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| Posted: Fri Feb 13, 2004 11:48 am Post subject: |
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 Maybe I wasn't looking right. Anyway, this Gentoo box I'm using now has serial ATA (i.e. SCSI) and I don't know how to time that. The second system I was mentioning had scores of 562/50 although it is a fast UDMA6 disk. Indeed I am noticing very high wait percentages in TOP for this system, so I'm beginning to assume something is wrong.
So it's /dev/hda you're worried about? BTW you didn't include but /dev/hdb. |
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meyerm
Veteran
Joined: 27 Jun 2002
Posts: 1311
Location: Munich / Germany
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| Posted: Fri Feb 13, 2004 2:33 pm Post subject: |
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Whoops. Thanks
| Code: |
yavin root # hdparm -i /dev/hdc
/dev/hdc:
Model=HITACHI_DK23EB-40, FwRev=00K0A0C0, SerialNo=6G4590
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160
IORDY=yes, 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=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
* signifies the current active mode
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And yes, it's hda. hdc seems to be ok for a notebook harddisk. But hda would not even be acceptable on my Zaurus or P100  |
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safferli
n00b
Joined: 14 Jan 2004
Posts: 45
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| Posted: Fri Feb 13, 2004 3:52 pm Post subject: |
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I have the same problem on my Acer Travelmate 800 with a Hitatchi harddirve. Note that the testing gives *terrible* results, but the system doesn't feel slow at all.
| Code: | bash-2.05b# hdparm -i /dev/hda
/dev/hda:
Model=HITACHI_DK23EA-60, FwRev=00K2A0A1, SerialNo=PV9356
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117210240
IORDY=yes, 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=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
* signifies the current active mode |
| Code: | bash-2.05b# hdparm /dev/hda
/dev/hda:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 65535/16/63, sectors = 117210240, start = 0
bash-2.05b# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1288 MB in 2.00 seconds = 642.49 MB/sec
Timing buffered disk reads: 10 MB in 3.35 seconds = 2.99 MB/sec |
which is not too bad, I had values of 30kB/s already... seems to be pretty stable on 2-3MB/s now. I could get the 642MB/s faster with some more aggressive hdparm settings.
But now for the strange part: turn off dma and the test results increase!
| Code: |
ash-2.05b# hdparm -d0 /dev/hda
/dev/hda:
setting using_dma to 0 (off)
using_dma = 0 (off)
bash-2.05b# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1212 MB in 2.01 seconds = 604.28 MB/sec
Timing buffered disk reads: 22 MB in 3.06 seconds = 7.19 MB/sec
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Perhaps you could try to turn off dma and see what happens... |
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Helena
Veteran
Joined: 02 Apr 2003
Posts: 1114
Location: Den Dolder, The Netherlands
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| Posted: Fri Feb 13, 2004 5:22 pm Post subject: |
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| safferli wrote: | I have the same problem on my Acer Travelmate 800 with a Hitatchi harddirve. Note that the testing gives *terrible* results, but the system doesn't feel slow at all.
But now for the strange part: turn off dma and the test results increase!
| Code: |
ash-2.05b# hdparm -d0 /dev/hda
/dev/hda:
setting using_dma to 0 (off)
using_dma = 0 (off)
bash-2.05b# hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1212 MB in 2.01 seconds = 604.28 MB/sec
Timing buffered disk reads: 22 MB in 3.06 seconds = 7.19 MB/sec
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Perhaps you could try to turn off dma and see what happens... |
My disk has slowed down to 2-3 as well... I've been fiddling around with hdparm but no luck. Studying the man page I wonder whether it still is necessary to use hdparm manually, or even what the boot service does. |
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feffi
Apprentice
Joined: 29 Mar 2003
Posts: 216
Location: Sol->Earth->Germany->Giessen
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| Posted: Fri Feb 13, 2004 5:35 pm Post subject: |
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As 'safferli' allready wrote my Harddisk also seems quite slow (as well in Gentoo as in Windows), maybe the limit of the Hitachi drive lays around 8MB/sec?? I also use an Acer Travelmate 803 LCi.
My hdparm settings:
| Code: |
all_args="-d1 -A1 -m16 -u1 -a64 -c1"
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my info on /dev/hda:
| Code: |
bash ~ # hdparm -i /dev/hda
/dev/hda:
Model=IC25N040ATCS04-0, FwRev=CA4OA71A, SerialNo=CSH406DDHN872B
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=1768kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160
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=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 3:
* signifies the current active mode
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my benchmarks on /dev/hda (average from 3 runs):
| Code: |
bash ~ # hdparm -tT /dev/hda
/dev/hda:
Timing buffer-cache reads: 1468 MB in 2.00 seconds = 733.38 MB/sec
Timing buffered disk reads: 62 MB in 3.08 seconds = 20.13 MB/sec
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Despite that THIS is definetly NOT fast, the system 'feels' fast...strange...
edit: I've done some research on Hitachi drive an found that the tranferrate of approx. 20MB/sec is the fastest where 8-10MB/sec is average (depending on where the data is actually on the drive). Furthermore this drive seems to be one of the faster ones built into laptops...sad, but true...
_________________
have fun
feffi
/(bb|[^b]{2})/ that is the Question!
Gentoo-Wiki: Acer Travelmate 803 LCi manual |
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meyerm
Veteran
Joined: 27 Jun 2002
Posts: 1311
Location: Munich / Germany
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| Posted: Fri Feb 13, 2004 9:04 pm Post subject: |
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Hmm, ok. What kernel are you using? As safferli wrote, disabling DMA really helped a little bit! Now I got 4 MB/s which is a world faster than before (Att: only in the hdparm tests! I didn't do any "real" tests up to now)
I'm using a 2.6.1 |
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