おまえの hddparm -tT 教えてください。

bash# cat /proc/ide/hda/model
TOSHIBA MK6015MAP
/dev/hda:
Timing buffer-cache reads: 64 MB in 0.55 seconds =116.36 MB/sec
Timing buffered disk reads: 32 MB in 2.44 seconds =13.11 MB/sec

bash-2.05# cat /proc/ide/hda/model
FUJITSU MPG3409AT E
/dev/hda:
Timing buffer-cache reads: 128 MB in 1.04 seconds =123.08 MB/sec
Timing buffered disk reads: 64 MB in 2.35 seconds = 27.23 MB/sec

bash-2.05# cat /proc/ide/hdc/model
IBM-DPTA-372050
/dev/hdc:
Timing buffer-cache reads: 128 MB in 1.01 seconds =126.73 MB/sec
Timing buffered disk reads: 64 MB in 2.94 seconds = 21.77 MB/sec

>>359
体感速度は向上しましたか？

>>360氏

はい、向上しました。

>>360氏
まだまだ、チューニングが必要かもしれません。

# hdparm -tT /dev/{sd{a,b,c,d,e,f},md1}
/dev/sda:
Timing cached reads: 20076 MB in 1.99 seconds = 10063.61 MB/sec
Timing buffered disk reads: 376 MB in 3.01 seconds = 125.12 MB/sec
/dev/sdb:
Timing cached reads: 21944 MB in 1.99 seconds = 11001.30 MB/sec
Timing buffered disk reads: 378 MB in 3.02 seconds = 125.36 MB/sec
/dev/sdc:
Timing cached reads: 20116 MB in 2.00 seconds = 10082.27 MB/sec
Timing buffered disk reads: 376 MB in 3.00 seconds = 125.28 MB/sec
/dev/sdd:
Timing cached reads: 20992 MB in 1.99 seconds = 10522.85 MB/sec
Timing buffered disk reads: 376 MB in 3.00 seconds = 125.25 MB/sec
/dev/sde:
Timing cached reads: 19760 MB in 1.99 seconds = 9904.86 MB/sec
Timing buffered disk reads: 376 MB in 3.01 seconds = 124.96 MB/sec
/dev/sdf:
Timing cached reads: 20588 MB in 1.99 seconds = 10320.11 MB/sec
Timing buffered disk reads: 378 MB in 3.01 seconds = 125.40 MB/sec
/dev/md1:
Timing cached reads: 22024 MB in 1.99 seconds = 11042.53 MB/sec
Timing buffered disk reads: 1452 MB in 3.00 seconds = 483.54 MB/sec

HDDは15k.5の300GBx6
SAS RAIDコントローラは LSI 1068E
(っつーてもRAID機能は殺してHBAとしてlinuxのmdでRAID5を構成)

>>363のシステムドライブにOCZのMLCな60GBのSSDをゲット
さっそくCentOS5.2(x86_64)を入れてhdparm実行してみた。

# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 22780 MB in 1.99 seconds = 11423.06 MB/sec
Timing buffered disk reads: 328 MB in 3.01 seconds = 108.82 MB/sec

とりあえずsshで入れる環境まで作って今日はおしまい。

HP Mini 1000 (HDD 60GBモデル)

/dev/sda:

Model=TOSHIBA MK6028GAL , FwRev=BN101C , SerialNo= Y82RW1ZQW
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=46
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117210240
IORDY=on/off, tPIO={min:240,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 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

Timing cached reads: 1152 MB in 2.00 seconds = 575.91 MB/sec
Timing buffered disk reads: 88 MB in 3.02 seconds = 29.12 MB/sec

/dev/sda:

Model=HDS722516VLAT20 , FwRev=V34OA6EA, SerialNo= VNR41EC4CJKL0M
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=1794kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=321670847
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: unknown setting WriteCache=enabled
Drive conforms to: ATA/ATAPI-6 T13 1410D revision 3a: ATA/ATAPI-2,3,4,5,6

* signifies the current active mode

Timing cached reads: 2086 MB in 2.00 seconds = 1043.12 MB/sec
Timing buffered disk reads: 168 MB in 3.00 seconds = 55.93 MB/sec

Hitachi HDP725050GLA360 x 6
Hitachi HDT725050VLA360 x 2

mdadm
md1:raid1
md2:raid10
md3:raid10
md4:raid6

# hdparm -tT /dev/md{1,2,3,4}

/dev/md1:
Timing cached reads: 4434 MB in 2.00 seconds = 2217.98 MB/sec
Timing buffered disk reads: 270 MB in 3.02 seconds = 89.35 MB/sec

/dev/md2:
Timing cached reads: 4794 MB in 2.00 seconds = 2398.63 MB/sec
Timing buffered disk reads: 1724 MB in 3.00 seconds = 574.57 MB/sec

/dev/md3:
Timing cached reads: 4602 MB in 2.00 seconds = 2301.99 MB/sec
Timing buffered disk reads: 848 MB in 3.02 seconds = 280.57 MB/sec

/dev/md4:
Timing cached reads: 3302 MB in 2.00 seconds = 1651.67 MB/sec
Timing buffered disk reads: 1034 MB in 3.01 seconds = 343.55 MB/sec

# /sbin/hdparm -tT /dev/{sd{a,d},md2}
/dev/sda:
 Timing cached reads:   4416 MB in  2.00 seconds = 2208.16 MB/sec
 Timing buffered disk reads:  220 MB in  3.00 seconds =  73.23 MB/sec

/dev/sdd:
 Timing cached reads:   4412 MB in  2.00 seconds = 2206.96 MB/sec
 Timing buffered disk reads:  368 MB in  3.01 seconds = 122.20 MB/sec

/dev/md2:
 Timing cached reads:   4368 MB in  2.00 seconds = 2183.79 MB/sec
 Timing buffered disk reads:  652 MB in  3.01 seconds = 216.83 MB/sec

起動時間はSSDが早いのう
CentOS5.2 POST > auto login > desktop
/dev/sda:Model=WD1600AAJS-19WAA0           57s
/dev/sdd:Model=SPCC Solid State DiskB20    40s
/dev/md2:Model=WD6400AAKS-22A7B0[RAID0]    46s

$ sudo /sbin/hdparm -itT /dev/sdc

/dev/sdc:

Model=Hitachi HDT721010SLA360 , FwRev=ST6OA31B, SerialNo=STF604MH0D5R9B
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56
BuffType=DualPortCache, BuffSize=15001kB, MaxMultSect=16, MultSect=?0?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 7406 MB in 2.00 seconds = 3705.39 MB/sec
Timing buffered disk reads: 336 MB in 3.01 seconds = 111.47 MB/sec

echo "test" > /dev/null

$ sudo /sbin/hdparm -itT /dev/sda

/dev/sda:

Model=Hitachi HDS721010KLA330 , FwRev=GKAOAB0A, SerialNo= GTE005PBGDBPZL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=31157kB, MaxMultSect=16, MultSect=?0?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
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 *udma6
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 6220 MB in 2.00 seconds = 3111.82 MB/sec
Timing buffered disk reads: 248 MB in 3.01 seconds = 82.28 MB/sec

echo "test" > /dev/null

K8T800　Athlon64 3000+　PC3200 512MB
さすがにシングルチャネルだからか、メモリおせえな…

# hdparm -tiT /dev/sda

/dev/sda:

Model=ST340016A , FwRev=3.75 , SerialNo=3HS3J6YJ
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?
(maybe): CurCHS=16383/16/63, CurSects=16514064, 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: Unspecified: ATA/ATAPI-1,2,3,4,5

* signifies the current active mode

Timing cached reads: 894 MB in 2.00 seconds = 446.50 MB/sec
Timing buffered disk reads: 96 MB in 3.03 seconds = 31.67 MB/sec

/dev/sda:
Timing cached reads: 562 MB in 2.02 seconds = 277.61 MB/sec
Timing buffered disk reads: 70 MB in 3.05 seconds = 22.92 MB/sec

echo "test" > /dev/null

# cat /sys/block/sda/device/model
TOSHIBA THNS064G

# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 3244 MB in 2.00 seconds = 1622.84 MB/sec
Timing buffered disk reads: 676 MB in 3.01 seconds = 224.48 MB/sec

$ sudo hdparm -itT /dev/sda

/dev/sda:

Model=Hitachi HDT725032VLA360 , FwRev=V54OA73A, SerialNo= VFD200R2DALDRL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=15315kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=625142448
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 3290 MB in 2.00 seconds = 1644.69 MB/sec
Timing buffered disk reads: 222 MB in 3.01 seconds = 73.64 MB/sec

Model=HITACHI_DK23EA-30

/dev/hda:
Timing cached reads: 386 MB in 2.00 seconds = 192.92 MB/sec
Timing buffered disk reads: 76 MB in 3.02 seconds = 25.13 MB/sec

udma5

# cat /sys/block/sda/device/model
9650SE-2LP DISK
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 26200 MB in 1.99 seconds = 13174.04 MB/sec
Timing buffered disk reads: 320 MB in 3.01 seconds = 106.27 MB/sec

intel SSDの結果が見てみたいな
入れた香具師居ないかな

マシン１
#cat /sys/block/sda/device/model
LD 0 RAID5 349G
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 3956 MB in 2.00 seconds = 1979.00 MB/sec
Timing buffered disk reads: 448 MB in 3.00 seconds = 149.16 MB/sec

マシン２
#cat /sys/block/sda/device/model
PERC 5/i Adapter
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 12696 MB in 2.00 seconds = 6354.50 MB/sec
Timing buffered disk reads: 734 MB in 3.02 seconds = 243.22 MB/sec

intel G33 Core2Duo E4400 2GB DDR2-667 WD400JD

/sbin/hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 2270 MB in 2.00 seconds = 1134.52 MB/sec
Timing buffered disk reads: 174 MB in 3.01 seconds = 57.86 MB/sec

ST380815AS

hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 2424 MB in 2.00 seconds = 1211.69 MB/sec
Timing buffered disk reads: 224 MB in 3.01 seconds = 74.44 MB/sec

test

$ cat /sys/block/sda/device/model
SAMSUNG HD502HJ
# for ((i=0;i<3;i++)) ; do /sbin/hdparm -tT /dev/sda ; done
/dev/sda:
 Timing cached reads:   5212 MB in  2.00 seconds = 2605.05 MB/sec
 Timing buffered disk reads:  434 MB in  3.00 seconds = 144.45 MB/sec

いつだかわからんが昔測ったデータ
# hdparm -itT /dev/sda

/dev/sda:

Model=WDC WD2500BEVS-00UST0 , FwRev=01.01A01, SerialNo= WD-WXE807137827
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?0?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=268435455
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 796 MB in 2.00 seconds = 398.17 MB/sec
Timing buffered disk reads: 164 MB in 3.03 seconds = 54.14 MB/sec

同じドライブでいま測ったデータ
# hdparm -itT /dev/sda

/dev/sda:

Model=WDC, FwRev=01.01A01, SerialNo=WD-WXE807137827
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=449338050
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2166 MB in 2.00 seconds = 1083.50 MB/sec
Timing buffered disk reads: 170 MB in 3.03 seconds = 56.06 MB/sec

なんかUDMAのモードが増えてるしcachedが3倍近く速くなってる

キャッシュはメインメモリの速度だからな

/dev/sda:

Model=INTEL, FwRev=2CV102HD, SerialNo=CVPO015203FN080JGN
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 6288 MB in 2.00 seconds = 3147.82 MB/sec
Timing buffered disk reads: 778 MB in 3.00 seconds = 259.12 MB/sec


cpuinfo
model name : Intel(R) Core(TM) i7 CPU L 620 @ 2.00GHz


Intel の SSD 80G だよん。
思えば遠くへ来たもんだ。

>>389
おおー速い
よさそうだね
起動速度も凄い？

起動はメチャ速くなりました。
要らんモジュールは削ってるけど、それでも速いです。
躊躇せず再起動できます。

まだあまり使い込んでるわけではないので、アレですけど
read は速くて write は期待したほどじゃない感じでしょうか。
tar の展開とか遅いなあって感じが、なんとなく。
ただ、これは気のせいかもしれません。
(裏で何かやってたかも)

test fencs schr?linger

2TB*6@mdadm RAID5

/dev/md0:
Timing cached reads: 14054 MB in 2.00 seconds = 7040.24 MB/sec
Timing buffered disk reads: 1684 MB in 3.01 seconds = 560.09 MB/sec

WD20EARSの667GBプラッタのほうです。

>>389 に続いて Intel X25-M

$ sudo /sbin/hdparm -itT /dev/sdj

/dev/sdj:

Model=INTEL, FwRev=2CV102HD, SerialNo=CVPO01650065080JGN
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=1
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 18998 MB in 2.00 seconds = 9510.80 MB/sec
Timing buffered disk reads: 806 MB in 3.01 seconds = 268.06 MB/sec

500GB プラッタ、キャッシュ 64MB の Caviar Black 1TB モデル。

$ cat /sys/block/sdg/device/model
WDC WD1002FAEX-0

$ sudo hdparm -itT /dev/sdg

/dev/sdg:

Model=WDC, FwRev=05.01D05, SerialNo=WD-WCATR2025250
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 26398 MB in 2.00 seconds = 13214.35 MB/sec
Timing buffered disk reads: 382 MB in 3.00 seconds = 127.24 MB/sec

1.8インチのサムソンSSDです

Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: SAMSUNG MCCOE64G Rev: PS10
Type: Direct-Access ANSI SCSI revision: 05

~# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 12084 MB in 1.99 seconds = 6065.87 MB/sec
Timing buffered disk reads: 328 MB in 3.01 seconds = 109.12 MB/sec

INTELに全然敵ってないな〜

>>396
というかすぐ上のHDDにすら負けているね。

>>397
さすがに >395 のは64MBキャッシュ効きまくりの結果でしょ〜
って思ってるんだけど、それともudma6ってのが効いてるの？
だとしても >386 と >387 は大差ないし・・・

SSDはシーケンシャルよりランダムがHDDよりも圧倒的だろ

そうか、そうだね、実際の使用状況ではランダムアクセス性能だよね。
ぼーっとしてた。ゴメン。

SSDならぬSDカードを/にした安物ノートPCを使用中
カード差し替えると環境をまるごと移せるから結構便利

# hdparm -tT /dev/sdb

/dev/sdb:
Timing cached reads: 1870 MB in 2.00 seconds = 935.60 MB/sec
Timing buffered disk reads: 60 MB in 3.08 seconds = 19.46 MB/sec

Intel製安ファイルサーバ＋WD30EZRS(750GB プラッタ)

$ cat /sys/block/sdb/device/model
WDC WD30EZRS-00J
$ dmesg | grep -i ich
[ 0.178597] pci 0000:00:1f.0: quirk: region 0800-087f claimed by ICH6 ACPI/GPIO/TCO
[ 0.178602] pci 0000:00:1f.0: quirk: region 0480-04bf claimed by ICH6 GPIO
$ sudo hdparm -itT /dev/sdb

/dev/sdb:

Model=WDC WD30EZRS-00J99B0 , FwRev=80.00A80, SerialNo= WD-WCAWZ0032511
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=5860533168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 1546 MB in 2.00 seconds = 772.95 MB/sec
Timing buffered disk reads: 344 MB in 3.01 seconds = 114.30 MB/sec

最近買い換えたノートPC
# hdparm -itT /dev/sda

/dev/sda:

Model=WDC WD6400BPVT-26HXZT1, FwRev=02.01A02, SerialNo=WD-WX21A90L0608
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=16
CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=1250263728
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 5958 MB in 2.00 seconds = 2980.72 MB/sec
Timing buffered disk reads: 254 MB in 3.02 seconds = 84.11 MB/sec

test

$ sudo hdparm -itT /dev/sda

/dev/sda:

Model=Hitachi HDT725032VLA360, FwRev=V54OA73A, SerialNo=VFD200R2DALDRL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=15315kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=625142448
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2882 MB in 2.00 seconds = 1440.68 MB/sec
Timing buffered disk reads: 222 MB in 3.01 seconds = 73.70 MB/sec

$ sudo hdparm -itT /dev/sdb

/dev/sdb:

Model=WDC WD10EADS-00L5B1, FwRev=01.01A01, SerialNo=WD-WCAU49342910
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2988 MB in 2.00 seconds = 1493.76 MB/sec
Timing buffered disk reads: 280 MB in 3.02 seconds = 92.78 MB/sec

sudo hdparm -itT /dev/sda #Arch Linux

/dev/sda:

Model=WDC WD10EARS-22Y5B1, FwRev=80.00A80, SerialNo=WD-WCAV5A704312
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 4776 MB in 2.00 seconds = 2388.39 MB/sec
Timing buffered disk reads: 330 MB in 3.01 seconds = 109.63 MB/sec

sudo hdparm -itT /dev/hda

/dev/hda:

Model=CF Card, FwRev=Ver6.00, SerialNo=D5E00708106C00000677
Config={ HardSect NotMFM Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=512, ECCbytes=4
BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=31227840
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 udma3 udma4 *udma5 udma6
AdvancedPM=no WriteCache=disabled
Drive conforms to: Unspecified: ATA/ATAPI-4,5

* signifies the current active mode

Timing cached reads: 1522 MB in 2.00 seconds = 760.95 MB/sec
Timing buffered disk reads: 194 MB in 3.01 seconds = 64.47 MB/sec

hdparm -itT /dev/sdc

/dev/sdc:

Model=WDC WD20EARS-00MVWB0, FwRev=51.0AB51, SerialNo=WD-WMAZA3948940
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=3907029168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2962 MB in 2.00 seconds = 1480.98 MB/sec
Timing buffered disk reads: 358 MB in 3.01 seconds = 118.98 MB/sec

ちなみに>>409はeSATA接続です。

Timing cached reads: 538 MB in 2.00 seconds = 268.71 MB/sec
Timing buffered disk reads: 116 MB in 3.03 seconds = 38.32 MB/sec

どうなの？

Intel X25-E 4台のraid0
/dev/md0:
Timing cached reads: 26748 MB in 2.00 seconds = 13403.41 MB/sec
Timing buffered disk reads: 1284 MB in 3.00 seconds = 427.86 MB/sec

オンボのSATAコントローラがPCI接続だったでござる orz

# hdparm -itT /dev/sda

/dev/sda:

Model=SPCC, FwRev=100730, SerialNo=0000000000000000005F
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=62533296
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-4,5,6,7

* signifies the current active mode

Timing cached reads: 2068 MB in 2.00 seconds = 1034.34 MB/sec
Timing buffered disk reads: 222 MB in 3.01 seconds = 73.74 MB/sec

# hdparm -Tt /dev/sdb

/dev/sdb:
Timing cached reads: 1688 MB in 2.00 seconds = 844.65 MB/sec
Timing buffered disk reads: 94 MB in 3.02 seconds = 31.15 MB/sec

/dev/md0:
Timing cached reads: 4026 MB in 2.00 seconds = 2012.94 MB/sec
Timing buffered disk reads: 736 MB in 3.00 seconds = 245.13 MB/sec

echo "test" > /dev/null

/dev/mapper/isw_fadffcfge_vol06:
Timing cached reads: 15424 MB in 2.00 seconds = 7718.61 MB/sec
Timing buffered disk reads: 1416 MB in 3.00 seconds = 471.43 MB/sec

CF変換晒してみる。>>401見るとSDで十分だったのかもしれん。
hdparm -itT /dev/sda

/dev/sda:

Model=CF, FwRev=Ver6.00, SerialNo=
Config={ HardSect NotMFM Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=32256, SectSize=512, ECCbytes=4
BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=1
CurCHS=16383/16/63, CurSects=31227840, LBA=yes, LBAsects=31227840
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 udma3 udma4 udma5 udma6
AdvancedPM=no WriteCache=disabled
Drive conforms to: Unspecified: ATA/ATAPI-4,5

* signifies the current active mode

Timing cached reads: 1030 MB in 2.00 seconds = 514.72 MB/sec
Timing buffered disk reads: 86 MB in 3.07 seconds = 28.04 MB/sec

[root@localhost ~]# hdparm -tT /dev/sd?

/dev/sda:
Timing cached reads: 8846 MB in 2.00 seconds = 4431.70 MB/sec
Timing buffered disk reads: 372 MB in 3.00 seconds = 123.82 MB/sec

/dev/sdb:
Timing cached reads: 8556 MB in 2.00 seconds = 4285.59 MB/sec
Timing buffered disk reads: 178 MB in 3.02 seconds = 58.99 MB/sec

sdaがシングルプッタラ500GB(ST3500418AS)
sdbはウエスタンのマルチプッタラ250GB(WD2500JS)

/dev/sda:
Model=Hitachi HTS725050A9A364, FwRev=PC4OC70E,
Timing cached reads: 6678 MB in 1.99 seconds = 3347.47 MB/sec
Timing buffered disk reads: 320 MB in 3.01 seconds = 106.34 MB/sec
ノートで3桁に到達したのは感慨深い

echo "test" > /dev/null

1 の cache read に近いしなあ。

$ sudo hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 7522 MB in 2.00 seconds = 3762.67 MB/sec
Timing buffered disk reads: 722 MB in 3.00 seconds = 240.48 MB/sec

初SSD CT256M4SSD2 / fw 009
31k で買った
マシンがSATA300 なのでIF が足引っ張ってるかな

EeePC901-X
root@user-901:~# hdparm -itT /dev/sda

/dev/sda:

Model=ASUS-PHISON SSD, FwRev=TST2.04U, SerialNo=S
Config={ HardSect NotMFM Fixed DTR>10Mbs }
RawCHS=7818/16/63, TrkSize=32256, SectSize=512, ECCbytes=4
BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=off
CurCHS=7818/16/63, CurSects=7880544, LBA=yes, LBAsects=7880544
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 udma3 *udma4
AdvancedPM=no
Drive conforms to: Unspecified: ATA/ATAPI-4,5

* signifies the current active mode

Timing cached reads: 918 MB in 2.00 seconds = 458.65 MB/sec
Timing buffered disk reads: 98 MB in 3.05 seconds = 32.13 MB/sec

~$ sudo hdparm -itT /dev/sdb

/dev/sdb:

Model=M4-CT064M4SSD2, FwRev=0009, SerialNo=00000000xxxxxxxxxxxB
Config={ Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=125045424
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

Timing cached reads: 3176 MB in 2.00 seconds = 1589.03 MB/sec
Timing buffered disk reads: 560 MB in 3.00 seconds = 186.47 MB/sec


sata2.xだとドライブの足を引っ張ってる状態なんだろうね。
新しいマザー買わなきゃ…

/dev/sda:

Model=INTEL SSDSA2M080G2GC, FwRev=2CV102HD, SerialNo=
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D revision 1: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 6364 MB in 2.00 seconds = 3182.98 MB/sec
Timing buffered disk reads: 510 MB in 3.01 seconds = 169.35 MB/sec

/dev/sdb:

Model=Hitachi HDS721010DLE630, FwRev=MS2OA5N0, SerialNo=
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56
BuffType=DualPortCache, BuffSize=25956kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 6586 MB in 2.00 seconds = 3294.04 MB/sec
Timing buffered disk reads: 510 MB in 3.01 seconds = 169.35 MB/sec

こんなもんなの？

2.5inch SATA です．

cat /proc/scsi/scsi
WDC WD3200BEVT-2 Rev: 11.0

# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 182 MB in 2.02 seconds = 90.32 MB/sec
Timing buffered disk reads: 166 MB in 3.00 seconds = 55.25 MB/sec

$ sudo hdparm -itT /dev/sda

/dev/sda:

Model=STT_FZM64GW18P, FwRev=VATE1703, SerialNo=P682582-N5A1-404B001
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=DualPortCache, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117440512
IORDY=yes, 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 udma3 udma4 *udma5 udma6
AdvancedPM=no WriteCache=disabled
Drive conforms to: unknown: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 1448 MB in 2.00 seconds = 724.08 MB/sec
Timing buffered disk reads: 236 MB in 3.00 seconds = 78.54 MB/sec

echo "test" > /dev/null

2Tの緑キャビア黒キャビア
/dev/sda:

Model=WDC WD20EARS-00S8B1, FwRev=80.00A80, SerialNo=WD-WCAVY4381452

Timing cached reads: 7184 MB in 2.00 seconds = 3593.62 MB/sec
Timing buffered disk reads: 308 MB in 3.01 seconds = 102.19 MB/sec

/dev/sdb:

Model=WDC WD2002FAEX-007BA0, FwRev=05.01D05, SerialNo=WD-WMAY05193088

Timing cached reads: 7284 MB in 2.00 seconds = 3643.46 MB/sec
Timing buffered disk reads: 414 MB in 3.01 seconds = 137.34 MB/sec

>>403のノートPCだが、買って2年ほどたつしそろそろディスクを載せ替え
なんかmSATAのSSDも積めるようなんで、1TB 7200rpm(2.5inch)とmSATA 256GB SSDを載せてみた

んでまずはSSD
/dev/sda:

Model=M4-CT256M4SSD3, FwRev=04MH, SerialNo=000000001302036018D3
Config={ Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=65535/1/63, CurSects=16515009, LBA=yes, LBAsects=500118192
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

Timing cached reads: 5820 MB in 2.00 seconds = 2911.09 MB/sec
Timing buffered disk reads: 734 MB in 3.00 seconds = 244.48 MB/sec

つぎにHDD

/dev/sdb:

Model=HGST HTS721010A9E630, FwRev=JB0OA3B0, SerialNo=JG40006PG09UUD
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=65535/1/63, CurSects=4128705, LBA=yes, LBAsects=1953525168
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 *udma6
AdvancedPM=yes: mode=0x80 (128) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 5530 MB in 2.00 seconds = 2765.68 MB/sec
Timing buffered disk reads: 390 MB in 3.00 seconds = 129.81 MB/sec

HDDも前のやつ(640GB 5400rpm)よりかは1.5倍くらい速くなってる
SSDはもっと速いが、思ったほどじゃないな

最近買った３台
Device Model: ST1000NM0033-9ZM173
Timing cached reads: 23602 MB in 1.99 seconds = 11831.04 MB/sec
Timing buffered disk reads: 530 MB in 3.01 seconds = 176.31 MB/sec

Device Model: WDC WD10EFRX-68JCSN0
Timing cached reads: 24286 MB in 1.99 seconds = 12173.49 MB/sec
Timing buffered disk reads: 448 MB in 3.01 seconds = 148.82 MB/sec

Device Model: ST1000LM014-1EJ164
Timing cached reads: 5352 MB in 2.00 seconds = 2680.35 MB/sec
Timing buffered disk reads: 306 MB in 3.01 seconds = 101.69 MB/sec

Timing cached reads: 25770 MB in 2.00 seconds = 12904.65 MB/sec Timing buffered disk reads: 2378 MB in 3.00 seconds = 792.51 MB/sec

Model=ST4000DM000-1F2168, FwRev=CC52, SerialNo=W300H9Y4
Timing cached reads: 30746 MB in 2.00 seconds = 15392.73 MB/sec
Timing buffered disk reads: 422 MB in 3.01 seconds = 140.43 MB/sec

/dev/md0: Timing cached reads: 29472 MB in 2.00 seconds = 14754.72 MB/sec Timing buffered disk reads: 3540 MB in 3.00 seconds = 1180.00 MB/sec

ps3disk sb_02: ps3da is a Hitachi HTS722020K9SA00 (190782 MiB total, 178238 MiB for OtherOS)

# hdparm -itT /dev/ps3da2

/dev/ps3da2:
HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
Timing cached reads: 3752 MB in 2.00 seconds = 1878.79 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
Timing buffered disk reads: 210 MB in 3.02 seconds = 69.47 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device

コマンド 'hddparm' は見つかりませんでした。もしかして:
コマンド 'hdparm' - パッケージ 'hdparm' (main)
hddparm: コマンドが見つかりません

/dev/sda:

Model=M4-CT064M4SSD2, FwRev=0309, SerialNo=0000000011500324D2F3
Config={ Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=125045424
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

Timing cached reads: 3234 MB in 2.00 seconds = 1616.08 MB/sec
Timing buffered disk reads: 780 MB in 3.01 seconds = 259.41 MB/se

/dev/sdb:

Model=TOSHIBA DT01ACA200, FwRev=MX4OABB0, SerialNo=53I7NYKXS
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56
BuffType=DualPortCache, BuffSize=unknown, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=3907029168
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 3498 MB in 2.00 seconds = 1748.64 MB/sec
Timing buffered disk reads: 542 MB in 3.00 seconds = 180.57 MB/sec

/dev/sdc:

Model=WDC WD10EARS-00Y5B1, FwRev=80.00A80, SerialNo=WD-WCAV5A625020
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2858 MB in 2.00 seconds = 1429.11 MB/sec
Timing buffered disk reads: 24 MB in 3.10 seconds = 7.74 MB/sec

/dev/sdd:

Model=WDC WD20EARS-00MVWB0, FwRev=51.0AB51, SerialNo=WD-WCAZA2460714
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=3907029168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 2672 MB in 2.00 seconds = 1336.18 MB/sec
Timing buffered disk reads: 332 MB in 3.00 seconds = 110.63 MB/sec

/dev/sdc:

Model=HGST HDS5C4040ALE630, FwRev=MPAOA580, SerialNo=PL1331LAGK58EH
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56
BuffType=DualPortCache, BuffSize=23140kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=7814037168
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 *udma6
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 9956 MB in 2.00 seconds = 4981.18 MB/sec
Timing buffered disk reads: 362 MB in 3.00 seconds = 120.65 MB/sec

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/dev/sda:

Model=C300-CTFDDAC064MAG, FwRev=0002, SerialNo=00000000103002FC2EC4
Config={ Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=125045424
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-3,4,5,6,7

* signifies the current active mode

Timing cached reads: 7628 MB in 2.00 seconds = 3815.32 MB/sec
Timing buffered disk reads: 750 MB in 3.00 seconds = 249.72 MB/sec

/dev/sdb:

Model=WDC WD60EFRX-68MYMN1, FwRev=82.00A82, SerialNo=WD-WX11D1414773
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=11721045168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=no WriteCache=enabled
Drive conforms to: Reserved: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode

Timing cached reads: 30622 MB in 2.00 seconds = 15331.17 MB/sec
Timing buffered disk reads: 518 MB in 3.01 seconds = 171.99 MB/sec

6T買った。ほとんどアニメ動画です。

test　test　test

テストはこっちで。

test
http://maguro.2ch.net/test/read.cgi/linux/1341351394/

thanks for your advice, i've got it :)
please forgive my selfish behavior to this thread.

SSD単体
# hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 8578 MB in 2.00 seconds = 4293.74 MB/sec
Timing buffered disk reads: 1360 MB in 3.00 seconds = 453.22 MB/sec

SSD5台によるRAID0
# hdparm -tT /dev/md0
/dev/md0:
Timing cached reads: 8558 MB in 2.00 seconds = 4283.58 MB/sec
Timing buffered disk reads: 2512 MB in 3.00 seconds = 836.70 MB/sec

SSD5台によるRAID10
# hdparm -tT /dev/md1
/dev/md1:
Timing cached reads: 8720 MB in 2.00 seconds = 4364.81 MB/sec
Timing buffered disk reads: 2248 MB in 3.00 seconds = 748.93 MB/sec

>>453
RAID0組んでも、readそんなに上がらないのか

>454
cached read が 4GB/s のマシンだと他が足引っ張ってる気がしなくもない。

糞古い40GBのHDDからSSDに変更するまえの自分用メモ
DG33BU C2D-E4400 DDR667-2GB WD400JD-40GB

/sbin/hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 2282 MB in 2.00 seconds = 1140.90 MB/sec
Timing buffered disk reads: 176 MB in 3.03 seconds = 58.04 MB/sec

Cubox-iにUSBフラッシュx2コをおごってRAID5組んだ結果

hdparm -tT /dev/mmcblk0p1 /dev/md0

/dev/mmcblk0p1:
Timing cached reads: 686 MB in 2.00 seconds = 342.98 MB/sec
Timing buffered disk reads: 62 MB in 3.07 seconds = 20.18 MB/sec

/dev/md0:
Timing cached reads: 726 MB in 2.00 seconds = 362.45 MB/sec
Timing buffered disk reads: 148 MB in 3.01 seconds = 49.15 MB/sec

SSDとか色々変更して5年ぶりに鯖を組み直した結果
DG45ID Cele-E3300 DDR800-2GB X25-V 40GB

/sbin/hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 2550 MB in 2.00 seconds = 1274.75 MB/sec
Timing buffered disk reads: 518 MB in 3.01 seconds = 172.14 MB/sec

今となってはヘボいSSDだけど、起動速度を筆頭にメッチャ効果あるな

1年半前から使っているノートだが、ここらでSSDにのせかえてみる
SSDはCrucialのMX300 2.5-inch SSD(1TB)

Timing cached reads: 25194 MB in 2.00 seconds = 12609.64 MB/sec
Timing buffered disk reads: 1406 MB in 3.00 seconds = 468.24 MB/sec

うむ、もうしばらく使えるな