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标题: 西数蓝盘1T 绿盘2T在Ubuntu 10的表现! [打印本页]
作者: hero    时间: 2011-2-12 21:22
标题: 西数蓝盘1T 绿盘2T在Ubuntu 10的表现!
大家都发win下面的测试，我来个另类的，Linux Ubuntu 10.10下hdparm的测试结果

[attach]1473215[/attach]
从上到下是绿盘2T 蓝盘1T 希捷250G（AAM都是最低值）

[attach]1473216[/attach]

绿盘2T AAM 128 to 254


作者: Edison    时间: 2011-2-13 11:01
C:\Program Files (x86)\hdparm\bin>hdparm-run.bat -Tt hdc
hdparm -Tt hdc

WD 1TB 黑盘：
  1. ATA device, with non-removable media
  2.         Model Number:       WDC WD1002FAEX-00Z3A0
  3.         Serial Number:      WD-WCATR2895237
  4.         Firmware Revision:  05.01D05
  5. Transport: Serial, SATA 1.0a, SATA II Extensions, SATA Rev 2.5
  6. Standards:
  7.         Supported: 8 7 6 5
  8.         Likely used: 8
  9. Configuration:
  10.         Logical         max     current
  11.         cylinders       16383   16383
  12.         heads           16      16
  13.         sectors/track   63      63
  14.         --
  15.         CHS current addressable sectors:   16514064
  16.         LBA    user addressable sectors:  268435455
  17.         LBA48  user addressable sectors: 1953525168
  18.         device size with M = 1024*1024:      953869 MBytes
  19.         device size with M = 1000*1000:     1000204 MBytes (1000 GB)
  20. Capabilities:
  21.         LBA, IORDY(can be disabled)
  22.         Queue depth: 32
  23.         Standby timer values: spec'd by Standard, with device specific minimum
  24.         R/W multiple sector transfer: Max = 16  Current = 16
  25.         Recommended acoustic management value: 128, current value: 254
  26.         DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
  27.              Cycle time: min=120ns recommended=120ns
  28.         PIO: pio0 pio1 pio2 pio3 pio4
  29.              Cycle time: no flow control=120ns  IORDY flow control=120ns
  30. Commands/features:
  31.         Enabled Supported:
  32.            *    SMART feature set
  33.                 Security Mode feature set
  34.            *    Power Management feature set
  35.            *    Write cache
  36.            *    Look-ahead
  37.            *    Host Protected Area feature set
  38.            *    WRITE_BUFFER command
  39.            *    READ_BUFFER command
  40.            *    NOP cmd
  41.            *    DOWNLOAD_MICROCODE
  42.                 Power-Up In Standby feature set
  43.            *    SET_FEATURES required to spinup after power up
  44.                 SET_MAX security extension
  45.                 Automatic Acoustic Management feature set
  46.            *    48-bit Address feature set
  47.            *    Device Configuration Overlay feature set
  48.            *    Mandatory FLUSH_CACHE
  49.            *    FLUSH_CACHE_EXT
  50.            *    SMART error logging
  51.            *    SMART self-test
  52.            *    General Purpose Logging feature set
  53.            *    64-bit World wide name
  54.            *    {READ,WRITE}_DMA_EXT_GPL commands
  55.            *    Segmented DOWNLOAD_MICROCODE
  56.            *    SATA-I signaling speed (1.5Gb/s)
  57.            *    SATA-II signaling speed (3.0Gb/s)
  58.            *    unknown 76[3]
  59.            *    Native Command Queueing (NCQ)
  60.            *    Host-initiated interface power management
  61.            *    Phy event counters
  62.            *    unknown 76[12]
  63.            *    DMA Setup Auto-Activate optimization
  64.            *    Software settings preservation
  65.            *    SMART Command Transport (SCT) feature set
  66.            *    SCT Long Sector Access (AC1)
  67.            *    SCT LBA Segment Access (AC2)
  68.            *    SCT Features Control (AC4)
  69.            *    SCT Data Tables (AC5)
  70.                 unknown 206[12]
  71.                 unknown 206[13]
  72. Security:
  73.         Master password revision code = 65534
  74.                 supported
  75.         not     enabled
  76.         not     locked
  77.         not     frozen
  78.         not     expired: security count
  79.                 supported: enhanced erase
  80.         182min for SECURITY ERASE UNIT. 182min for ENHANCED SECURITY ERASE UNIT.
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hdc:
Timing cached reads:   468 MB in  2.01 seconds = 233.40 MB/sec
Timing buffered disk reads:  356 MB in  3.01 seconds = 118.19 MB/sec
作者: aliguagua    时间: 2011-2-13 18:04
看不懂，黑盘的缓存读取速度怎么那么低，另外Timing cached reads不是应该受接口的限制最高300MB/s的吗



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