Počasen disk v linuxu

se oproščam, da je problem v angleščini, ker sem poslal tut na usenet, sam se mi ne da še v slovenščini napisat, pa sj itak vsi razumete angleško!

hi!

i have this weird problem with my disk read speed.

my configuration:

RH 8.0
MSI Turbo2 v5.0 (KT133A chipset)
AMD Duron 600
256Mb SDRAM 133
2xMaxtor 40Gb 5400 ATA100 (disks are NOT identical)
Fujitsu 8.4 5400 ATA33

1st HDD is connected to primary ide channel as master (no slave connected). it has one ext3 partition for rh8 and one for windows. 2nd HDD is connected to secondary channel on Promise Ultra66 controler (again as master without slave). it has one vfat partition and two swap partitions (1 for win and 1 for linux) at the end. 3rd HDD has only one vfat partition.

my problem is that when i'm copying large files (probably the same goes for small files but i don't notice it) i get like 1-2Mb/s transfers. this is only the case when i copy files from /dev/hda1 to /dev/hdx. when i copy files from /dev/hdx to /dev/hda the speeds are at least 5x greater. copy from /dev/hda1 to /dev/hda1 is extremly slow also. so, i guess there is only problem with my /dev/hda read speed, right?

i thought hdparm would show low scores for /dev/hda but this is what i got:

[root@localhost root]# hdparm -Tti /dev/hda

/dev/hda:

Model=MAXTOR 4K040H2, FwRev=A08.1500, SerialNo=572118710633
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=DualPortCache, BuffSize=2000kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78198750
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 udma3 udma4 *udma5
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1: 1 2 3 4 5

Timing buffer-cache reads: 128 MB in 0.61 seconds =211.42 MB/sec
Timing buffered disk reads: 64 MB in 1.98 seconds = 32.28 MB/sec

[root@localhost root]# hdparm -Tti /dev/hde

/dev/hde:

Model=FUJITSU MPD3084AT, FwRev=DD-03-44, SerialNo=01017104
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=512kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=16514064
IORDY=yes, 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: device does not report version: 1 2 3 4

Timing buffer-cache reads: 128 MB in 0.59 seconds =218.47 MB/sec
Timing buffered disk reads: 64 MB in 4.17 seconds = 15.35 MB/sec

[root@localhost root]# hdparm -Tti /dev/hdg

/dev/hdg:

Model=Maxtor 4D040H2, FwRev=DAH017K0, SerialNo=D26TSE4E
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80043264
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 udma3 *udma4 udma5
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 0: 1 2 3 4 5 6

Timing buffer-cache reads: 128 MB in 0.61 seconds =211.42 MB/sec
Timing buffered disk reads: 64 MB in 1.85 seconds = 34.60 MB/sec

the speeds are about right for this configuration, aren't they?
i have dma enabled, tried (un)masking irq, -c1, etc... nothig helped the actual read speed.

here is also hdparm -I:
/dev/hda:

ATA device, with non-removable media
Model Number: MAXTOR 4K040H2
Serial Number: 572118710633
Firmware Revision: A08.1500
Standards:
Used: ATA/ATAPI-5 T13 1321D revision 1
Supported: 5 4 3 2 & some of 6
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 78198750
device size with M = 1024*1024: 38182 MBytes
device size with M = 1000*1000: 40037 MBytes (40 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 4 Queue depth: 1
Standby timer values: spec'd by Vendor, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Recommended acoustic management value: 254, current value: 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* Automatic Acoustic Management feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
Security:
Master password revision code = 65534
supported
not enabled
not locked
not frozen
not expired: security count
not supported: enhanced erase
26min for SECURITY ERASE UNIT.
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct

/dev/hdg:

ATA device, with non-removable media
Model Number: Maxtor 4D040H2
Serial Number: D26TSE4E
Firmware Revision: DAH017K0
Standards:
Used: ATA/ATAPI-6 T13 1410D revision 0
Supported: 6 5 4 3
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 80043264
device size with M = 1024*1024: 39083 MBytes
device size with M = 1000*1000: 40982 MBytes (40 GB)
Capabilities:
LBA, IORDY(can be disabled)
bytes avail on r/w long: 57 Queue depth: 1
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: unknown setting (0x0000)
Recommended acoustic management value: 192, current value: 192
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4 udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* NOP cmd
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
* SMART feature set
* Device Configuration Overlay feature set
* Automatic Acoustic Management feature set
SET MAX security extension
Advanced Power Management feature set
* DOWNLOAD MICROCODE cmd
* SMART self-test
* SMART error logging
HW reset results:
CBLID- above Vih
Device num = 0 determined by the jumper
Checksum: correct


any ideas?

i also tried changing about every bios setting, nothig helped!

thanks!

v rh 7.3 je blo isto počas. v windowsih pa je vse normalno!