Benchmarking Disks with hdparm

Sample Result

$ hdparm -tT /dev/sda{,,,}

/dev/sda:
 Timing cached reads:   482 MB in  2.00 seconds = 240.76 MB/sec
 Timing buffered disk reads:  102 MB in  3.02 seconds =  33.74 MB/sec

/dev/sda:
 Timing cached reads:   464 MB in  2.00 seconds = 231.45 MB/sec
 Timing buffered disk reads:  106 MB in  3.05 seconds =  34.74 MB/sec

/dev/sda:
 Timing cached reads:   512 MB in  2.02 seconds = 253.11 MB/sec
 Timing buffered disk reads:   92 MB in  3.01 seconds =  30.61 MB/sec

/dev/sda:
 Timing cached reads:   412 MB in  2.68 seconds = 153.65 MB/sec
 Timing buffered disk reads:  110 MB in  3.00 seconds =  36.64 MB/sec

Disk Information

# hdparm -I /dev/sda

/dev/sda:

ATA device, with non-removable media
        Model Number:       SAMSUNG HM080HC                         
        Serial Number:      [14-digits-masked]
        Firmware Revision:  AM100-16
Standards:
        Used: ATA/ATAPI-7 T13 1532D revision 0 
        Supported: 7 6 5 4 
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:  156301488
        LBA48  user addressable sectors:  156301488
        device size with M = 1024*1024:       76319 MBytes
        device size with M = 1000*1000:       80026 MBytes (80 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        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 (0x0080)
        Recommended acoustic management value: 254, current value: 0
        DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 
             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:
           *    SMART feature set
                Security Mode feature set
           *    Power Management feature set
           *    Write cache
           *    Look-ahead
           *    Host Protected Area feature set
           *    WRITE_BUFFER command
           *    READ_BUFFER command
           *    NOP cmd
           *    DOWNLOAD_MICROCODE
                Advanced Power Management feature set
                SET_MAX security extension
                Automatic Acoustic Management feature set
           *    48-bit Address feature set
           *    Device Configuration Overlay feature set
           *    Mandatory FLUSH_CACHE
           *    FLUSH_CACHE_EXT
           *    SMART error logging
           *    SMART self-test
           *    General Purpose Logging feature set
           *    IDLE_IMMEDIATE with UNLOAD
           *    SMART Command Transport (SCT) feature set
           *    SCT Long Sector Access (AC1)
           *    SCT LBA Segment Access (AC2)
           *    SCT Error Recovery Control (AC3)
           *    SCT Features Control (AC4)
           *    SCT Data Tables (AC5)
Security: 
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
                frozen
        not     expired: security count
                supported: enhanced erase
        44min for SECURITY ERASE UNIT. 44min for ENHANCED SECURITY ERASE UNIT.
HW reset results:
        CBLID- above Vih
        Device num = 0 determined by the jumper
Checksum: correct
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