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Въпроси отговори
Въпрос: hdd speed
[Търси: ]

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Към началото |Добави въпрос |Отговори
 
Въпрос
От: helix (dhelix __@__ mail[ точка ]bg) Дата: 07/04/2003
Zdr!
Imam slednia problem(vupros) puskam 

   hdparm /dev/hda
na moia linux i mi dava 4e buffered read e 2.81MB/s
sled kato izpulnih 
    hdparm -X69 -d1 -u1 -m16 -c3 /dev/hda se vdigna do okolo
19MB/s
 oba4e mi dava 4e UDMA mode 3/4/5 ne sa poddurjani.Ta vuprosa
 mi e moga li da si pusna mode5 i kak, i ima li drug na4in da
si uveli4a skorostta na diska?
10x


Отговор #1
От: Djimbo (kvv (a) atsoftconsult-bg< dot >com) Дата: 07/04/2003
Zdr probvai parvo tova :
[root@desktop1 kiril]# /sbin/hdparm -i /dev/hda

/dev/hda:

 Model=ST36424A, FwRev=3.09, SerialNo=7BR06KQ3
  Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs
RotSpdTol>.5% }
 RawCHS=13328/15/63, TrkSize=0, SectSize=0, ECCbytes=0
  BuffType=unknown, BuffSize=512kB, MaxMultSect=16,
MultSect=16
  CurCHS=13328/15/63, CurSects=12594960, LBA=yes,
LBAsects=12594960
  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 udma0 udma1 *udma2 udma3
udma4
 AdvancedPM=no WriteCache=enabled
 Drive Supports : Reserved : ATA-1 ATA-2 ATA-3 ATA-4
Da vidish kakvoto ti trebva sled tova optimizirai s hdparm

hdparm -X {kvoto tii treba}

 Napravi testove spechialno pri men hdd varvi po dobre na
Udma 2 otkolkoto na 5

Test:

 [root@desktop1 kiril]# /sbin/hdparm -X66 -d1 -m16 -c3
/dev/hdc

/dev/hdc:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting using_dma to 1 (on)
 setting xfermode to 66 (UltraDMA mode2)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm /dev/hdc

/dev/hdc:
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 2498/255/63, sectors = 40132503, start = 0
 busstate     =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  1.67 seconds =
76.65 MB/sec
  Timing buffered disk reads:  64 MB in  2.91 seconds = 21.99
MB/sec
 [root@desktop1 kiril]# /sbin/hdparm -X69 -d1 -m16 -c3
/dev/hdc

/dev/hdc:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting using_dma to 1 (on)
 setting xfermode to 69 (UltraDMA mode5)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  2.27 seconds =
56.39 MB/sec
  Timing buffered disk reads:  64 MB in  2.92 seconds = 21.92
MB/sec
 [root@desktop1 kiril]# /sbin/hdparm -X66 -d1 -m16 -c3
/dev/hdc

/dev/hdc:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting using_dma to 1 (on)
 setting xfermode to 66 (UltraDMA mode2)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  1.65 seconds =
77.58 MB/sec
  Timing buffered disk reads:  64 MB in  3.37 seconds = 18.99
MB/sec
 [root@desktop1 kiril]# /sbin/hdparm -X69 -d1 -u1 -m16 -c3
/dev/hdc

/dev/hdc:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting unmaskirq to 1 (on)
 setting using_dma to 1 (on)
 setting xfermode to 69 (UltraDMA mode5)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  1.78 seconds =
71.91 MB/sec
  Timing buffered disk reads:  64 MB in  2.91 seconds = 21.99
MB/sec
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  1.77 seconds =
72.32 MB/sec
  Timing buffered disk reads:  64 MB in  2.92 seconds = 21.92
MB/sec
 [root@desktop1 kiril]# /sbin/hdparm -X66 -d1 -m16 -c3
/dev/hdc

/dev/hdc:
 setting 32-bit I/O support flag to 3
 setting multcount to 16
 setting using_dma to 1 (on)
 setting xfermode to 66 (UltraDMA mode2)
 multcount    = 16 (on)
 I/O support  =  3 (32-bit w/sync)
 using_dma    =  1 (on)
[root@desktop1 kiril]# /sbin/hdparm -Tt /dev/hdc

/dev/hdc:
  Timing buffer-cache reads:   128 MB in  1.68 seconds =
76.19 MB/sec
  Timing buffered disk reads:  64 MB in  2.91 seconds = 21.99
MB/sec


Za sledniqt HDD :
[root@desktop1 kiril]# /sbin/hdparm -i /dev/hdc

/dev/hdc:

  Model=MAXTOR 6L020J1, FwRev=A93.0500,
SerialNo=661134651988
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
  RawCHS=16383/16/63, TrkSize=32256, SectSize=21298,
ECCbytes=4
  BuffType=DualPortCache, BuffSize=1819kB, MaxMultSect=16,
MultSect=16
  CurCHS=16383/16/63, CurSects=16514064, LBA=yes,
LBAsects=40132503
  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 udma0 udma1 *udma2 udma3 udma4
udma5 udma6
 AdvancedPM=no WriteCache=enabled
  Drive Supports : ATA/ATAPI-5 T13 1321D revision 1 : ATA-1
ATA-2 ATA-3 ATA-4 ATA-5



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