Dotaz: Rychlost kopirovana suborov na disku

[macros]

Mam HD 7200 rpm Seagate. Jadro 2.6.7-ck6, mdk 10 CE filesystem je ReiserFS. Doska K7S5A.

Ako root mam pri kopirovani suboru v ramci toho isteho disku, alebo particie rychlost okolo 10 MB/s. Priblizne rovnaku rychlost mam aj vo WIN XP.

Problem je ze ako user mi kopiruje rovnaky subor na to iste miesto maximalne rychlostou 2,5 MB/s.

Otazka je - preco? V com je problem? DMA je zapnute.Vie niekto, v com to je? Pri kopirovani je vytazenie CPU 100%

/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 = 78165360, start = 0

/dev/hda:
 Timing buffer-cache reads:   748 MB in  2.00 seconds = 373.31 MB/sec
 Timing buffered disk reads:  106 MB in  3.06 seconds =  34.68 MB/sec

Odpovědi

[Petr Šobáň]

Nevím mám stejnou desku stejné HD a bez problémů.

[root@soban /home/petr]# /sbin/hdparm -tT /dev/hda

/dev/hda:
 Timing buffer-cache reads:   924 MB in  2.01 seconds = 460.23 MB/sec
 Timing buffered disk reads:  124 MB in  3.00 seconds =  41.31 MB/sec

[root@soban /home/petr]# /sbin/hdparm -tT /dev/hdb

/dev/hdb:
 Timing buffer-cache reads:   924 MB in  2.00 seconds = 460.92 MB/sec
 Timing buffered disk reads:  124 MB in  3.04 seconds =  40.77 MB/sec

[root@soban /home/petr]# /sbin/hdparm /dev/hda

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  3 (32-bit w/sync)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 16383/255/63, sectors = 234441648, start = 0

[root@soban /home/petr]# /sbin/hdparm /dev/hdb

/dev/hdb:
 multcount    = 16 (on)
 IO_support   =  3 (32-bit w/sync)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 65535/16/63, sectors = 234441648, start = 0
[root@soban /home/petr]# /sbin/hdparm -i /dev/hda

/dev/hda:

 Model=ST3120026A, FwRev=3.06, SerialNo=3JT2N1KB
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
 CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=234441648
 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:

 * signifies the current active mode
[root@soban /home/petr]# /sbin/hdparm -i /dev/hdb

/dev/hdb:

 Model=ST3120023A, FwRev=3.33, SerialNo=3KA1DVAF
 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=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=234441648
 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:

 * signifies the current active mode

Takže máte v jádře podporu čipsetu pro svůj IDE řadič ?

#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
# CONFIG_BLK_DEV_CMD640 is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_BLK_DEV_GENERIC=y
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
CONFIG_IDEDMA_PCI_AUTO=y
# CONFIG_IDEDMA_ONLYDISK is not set
CONFIG_BLK_DEV_ADMA=y
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD74XX is not set
# CONFIG_BLK_DEV_ATIIXP is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_TRIFLEX is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5520 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_SC1200 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_PDC202XX_OLD is not set
# CONFIG_BLK_DEV_PDC202XX_NEW is not set
# CONFIG_BLK_DEV_SVWKS is not set
# CONFIG_BLK_DEV_SIIMAGE is not set
CONFIG_BLK_DEV_SIS5513=y
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
# CONFIG_IDE_ARM is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_IVB is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_BLK_DEV_HD is not set

[macros]

Dakujem za odpoved. Podporu pre svoj chipset tam mam, presne ako vy.

Problem je ze pod rootom mi to kopiruje 10MB/s a ako uzivatelovi len 2MB/s. To mi nejde do hlavy, ze preco....

/dev/hda:

 Model=ST340016A, FwRev=3.10, SerialNo=3HS223QV
 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=4047/16/255, CurSects=16511760, 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: 

 * signifies the current active mode

[Petr Šobáň]

Jedině že by ten PC byl moc vytíženej a jeho výpočetní výkon by se používal jinde.

Jedinej rozdil jsem našel zde: IO_support = 3 (32-bit w/sync) vy tam máte 1 skouste to přehodit a potom se mrknout taky třeba do biosu co je tam nastavené prefetch a pod....

Taky kolik ram má ten PC nedostatek RAM používání swapu - zdržuje další zařízení na jednom kabelu ?

[macros]

Komp nerobi nic. Ram 256 MB, je to hned po boote (aj) ked zmenim na IO_support = 3 (32-bit w/sync) tak mam podla -tT este mensi prenos.

Skusil som nabootovat knoppix a tam som mal Timing buffered disk reads nieco malo cez 40 MB/s.

Aku mate verziu jadra?

Prefetch parameter v biose nemam... Musim ist prec,ale vecer sa na to pozriem...

[#2453]

A neni to zpusobeny nejakym limitem ?

Tomas

[#2453]

Jo, jeste - to je jasny, ze CPU maka na 100% vzdyt to je IDEcko...

[macros]

To ma napada ako jedine, ale neviem akym, alebo co by to mohlo byt...