磁盘读取性能测试

安装测试工具hdparm(hard disk parameters)

1、测试硬盘的读取速度

#  hdparm -t /dev/xvdb/dev/xvdb:Timing buffered disk reads: 1270 MB in  3.00 seconds = 422.80 MB/sec

2、测试硬盘缓存的读取速度

 # hdparm -T /dev/xvdb/dev/xvdb:Timing cached reads:   10362 MB in  1.99 seconds = 5219.66 MB/sec

Options:-a   Get/set fs readahead-A   Get/set the drive look-ahead flag (0/1)-b   Get/set bus state (0 == off, 1 == on, 2 == tristate)-B   Set Advanced Power Management setting (1-255)-c   Get/set IDE 32-bit IO setting-C   Check drive power mode status-d   Get/set using_dma flag-D   Enable/disable drive defect management-E   Set cd/dvd drive speed-f   Flush buffer cache for device on exit-F   Flush drive write cache-g   Display drive geometry-h   Display terse usage information-H   Read temperature from drive (Hitachi only)-i   Display drive identification-I   Detailed/current information directly from drive-J   Get/set Western DIgital "Idle3" timeout for a WDC "Green" drive (DANGEROUS)-k   Get/set keep_settings_over_reset flag (0/1)-K   Set drive keep_features_over_reset flag (0/1)-L   Set drive doorlock (0/1) (removable harddisks only)-m   Get/set multiple sector count-M   Get/set acoustic management (0-254, 128: quiet, 254: fast)-n   Get/set ignore-write-errors flag (0/1)-N   Get/set max visible number of sectors (HPA) (VERY DANGEROUS)-p   Set PIO mode on IDE interface chipset (0,1,2,3,4,...)-P   Set drive prefetch count-q   Change next setting quietly-Q   Get/set DMA queue_depth (if supported)-r   Get/set device readonly flag (DANGEROUS to set)-R   Get/set device write-read-verify flag-s   Set power-up in standby flag (0/1) (DANGEROUS)-S   Set standby (spindown) timeout-t   Perform device read timings-T   Perform cache read timings-u   Get/set unmaskirq flag (0/1)-U   Obsolete-v   Use defaults; same as -acdgkmur for IDE drives-V   Display program version and exit immediately-w   Perform device reset (DANGEROUS)-W   Get/set drive write-caching flag (0/1)-x   Obsolete-X   Set IDE xfer mode (DANGEROUS)-y   Put drive in standby mode-Y   Put drive to sleep-z   Re-read partition table-Z   Disable Seagate auto-powersaving mode

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