hdparm硬盘参数显示与设置

.显示硬盘的相关设置
[root@cnscn ~]# hdparm  /dev/sda

/dev/sda:
 IO_support   =  0 (default 16-bit)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 19929［柱面数］/255［磁头数］/63［扇区数］, sectors = 320173056［总扇区数］, start = 0［起始扇区数］

.显示硬盘的柱面、磁头、扇区数
[root@cnscn ~]# hdparm  -g  /dev/sda

/dev/sda:
 geometry     = 19929［柱面数］/255［磁头数］/63［扇区数］, sectors = 320173056［总扇区数］, start = 0［起始扇区数］

.评估硬盘的读取效率
[root@cnscn ~]# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  166 MB in  3.03 seconds =  54.85 MB/sec
[root@cnscn ~]# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  160 MB in  3.01 seconds =  53.11 MB/sec
[root@cnscn ~]# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  166 MB in  3.00 seconds =  55.31 MB/sec

.评估硬盘快取的读取效率
[root@cnscn ~]# hdparm -T /dev/sda

/dev/sda:
 Timing cached reads:   3784 MB in  2.00 seconds = 1894.60 MB/sec
[root@cnscn ~]# hdparm -T /dev/sda

/dev/sda:
 Timing cached reads:   3816 MB in  2.00 seconds = 1909.06 MB/sec
[root@cnscn ~]# hdparm -T /dev/sda

/dev/sda:
 Timing cached reads:   3728 MB in  2.00 seconds = 1866.29 MB/sec

.检测IDE硬盘的电源管理模式
[root@cnscn ~]# hdparm -C /dev/sda

/dev/sda:
 drive state is:  standby   [省电模式]

.显示IDE硬盘的内定硬件规格
[root@cnscn ~]# hdparm -i /dev/sda

.直接检测硬盘的硬件规格
[root@cnscn ~]# hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
        Model Number:       Maxtor 6B160M0
        Serial Number:      B404PTJH
        Firmware Revision:  BANC1BM0
Standards:
        Supported: 7 6 5 4
        Likely used: 7
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:  268435455
        LBA48  user addressable sectors:  320173056
        device size with M = 1024*1024:      156334 MBytes
        device size with M = 1000*1000:      163928 MBytes (163 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        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: 192, current value: 254
        DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
        Enabled Supported:
           *    NOP cmd
           *    READ BUFFER cmd
           *    WRITE BUFFER cmd
           *    Host Protected Area feature set
           *    Look-ahead
           *    Write cache
           *    Power Management feature set
                Security Mode feature set
           *    SMART feature set
           *    FLUSH CACHE EXT command
           *    Mandatory FLUSH CACHE command
           *    Device Configuration Overlay feature set
           *    48-bit Address feature set
           *    Automatic Acoustic Management feature set
                SET MAX security extension
                Advanced Power Management feature set
           *    DOWNLOAD MICROCODE cmd
           *    General Purpose Logging feature set
           *    SMART self-test
           *    SMART error logging
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
        not     frozen
        not     expired: security count
        not     supported: enhanced erase
Checksum: correct

.检测并设置IDE硬盘的32位I/O模式
 检测
 [root@cnscn ~]# hdparm -c /dev/sda

 /dev/sda:
 IO_support   =  0 (default 16-bit)  ［默认16位I／O］

 设置
 [root@cnscn ~]# hdparm -c 1 /dev/sda

.检测并设置IDE硬盘的DMA模式
 [root@cnscn ~]# hdparm -d /dev/sda
  /dev/sda:
  ...
 
 [root@cnscn ~]# hdparm -d 1 /dev/sda

.检测读取文件时，预先存入快取的扇区数
[root@cnscn ~]# hdparm -a /dev/sda

/dev/sda:
 readahead    = 256 (on)


.查询并设置硬盘多重扇区存取的扇区数，以增进硬盘的存取效率
 [root@cnscn ~]# hdparm -m /dev/sda
 [root@cnscn ~]# hdparm -m 参数值为整数值如8 /dev/sda

.将内顾虑缓冲的数据写入硬盘，并清除缓冲区的数据
 [root@cnscn ~]# hdparm -f /dev/sda