Re: [Comm] UDMA66 ATA100

[Alexander Kubatkin <_kaa_@mail.ru>]

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On Mon, 18 Nov 2002 21:44:24 +0300
Sergey Kuznetsov <yozhik@atom.ru> wrote:

> On Sun, 17 Nov 2002 23:44:31 +0000
> Sergey Bezuglov <noc@mail.spbnit.ru> wrote:
> 
> > > > Как включить режим АТА100 или хотябы 66. Сколько не бьюсь с
> > > > hdparm макс. скорость только 28 метров в секунду :(((  и
> > > > мать и винт могут АТА100, шлейф 80 жильный...  Где
> > > > крутить???# hdparm -d1 -X69 /dev/hda
> > при hdparm -t /dev/hda выдает: 64MB за 2.2 секунды = 27MB в
> > секунду. Это так и должно быть??? Приятель говорит, что у него
> > hdparm меряет 100MB, и у него пишет 100MB в секунду.
> 
> [root@localhost root]# hdparm -t /dev/hdb
> /dev/hdb:
>  Timing buffered disk reads:  64 MB in  1.42 seconds = 45.07
> MB/sec
> 
> [root@localhost root]# hdparm -t /dev/hda
> /dev/hda:
>  Timing buffered disk reads:  64 MB in  2.47 seconds = 25.91
> MB/sec
> 
> И то и другое - UDMA100 на соответствующем контроллере и
> адекватном шлейфе. Но hda делает 5400 об/мин, а hdb - на 7200. И
> разница не 33%, а куда больше.
> 


приведу для примера свои параметры в файле myhdd.txt.
машинка:
CPU:AMD Athlon 850MHz
RAM:1024Mb(2DIMMx512Mb)
Mother:ASUS A7V133(KT133A+PromiseATA100)
HDD:IBM 60Gb ATA100(шлейф 80pin)

вопрос: как удалось получить 45.07Mb/sec?

> С уважением,
> Сергей
> _______________________________________________
> Community mailing list
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> 
> 



__________________________________________________________
Alexander Kubatkin 

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#hdparm -tT /dev/hda

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.73 seconds =175.34 MB/sec
 Timing buffered disk reads:  64 MB in  1.70 seconds = 37.65 MB/sec


#hdparm -iI /dev/hda

/dev/hda:

 Model=IC35L060AVER07-0, FwRev=ER6OA44A, SerialNo=SZPTZLV7538
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=40
 BuffType=DualPortCache, BuffSize=1916kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=120103200
 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: disabled (255) WriteCache=enabled
 Drive conforms to: ATA/ATAPI-5 T13 1321D revision 1:  2 3 4 5


ATA device, with non-removable media
powers-up in standby; SET FEATURES subcmd spins-up.
        Model Number:       IC35L060AVER07-0
        Serial Number:      SZPTZLV7538
        Firmware Revision:  ER6OA44A
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:  120103200
        device size with M = 1024*1024:       58644 MBytes
        device size with M = 1000*1000:       61492 MBytes (61 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        bytes avail on r/w long: 40     Queue depth: 32
        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: 128, current value: 254
        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=240ns  IORDY flow control=120ns
Commands/features:
        Enabled Supported:
           *    NOP cmd
           *    READ BUFFER cmd
           *    WRITE BUFFER cmd
           *    Host Protected Area feature set
                Release interrupt
           *    Look-ahead
           *    Write cache
           *    Power Management feature set
                Security Mode feature set
           *    SMART feature set
           *    Device Configuration Overlay feature set
                Automatic Acoustic Management feature set
                SET MAX security extension
                Address Offset Reserved Area Boot
                SET FEATURES subcommand required to spinup after power up
                Power-Up In Standby feature set
                Advanced Power Management feature set
           *    READ/WRITE DMA QUEUED
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
        not     frozen
        not     expired: security count
        not     supported: enhanced erase
        46min for SECURITY ERASE UNIT.
HW reset results:
        CBLID- above Vih
        Device num = 0 determined by the jumper
Checksum: correct

#hdparm  /dev/hda

/dev/hda:
 multcount    = 16 (on)
 IO_support   =  3 (32-bit w/sync)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 7476/255/63, sectors = 120103200, start = 0