HDD -> SDD

[ link: hdd-to-ssd | tags: hw ssd | updated: Thu, 22 Mar 2012 20:28:45 ]

After reading and hearing everyone raving about SSDs for a couple of years it was hard to resists the upgrade.

So I got an Intel SSD 510 120GB to replace my Seagate 2.5" laptop HDD.

The prices in the ~120GB SSD category are pretty close. I chose the Intel based on reading that they have a low failure rate (I was unable to find the soruce when writing this up).

The Thinkpad X61 only has SATA-II; the drive supposedly has better performance on SATA3.

UPDATE: Samat K Jain points out that "the ThinkPad X61 is limited to 1.5 Gbps, even with SATA-II (Lenovo's excuse: power saving, by keeping bus clocks down)". Lots of discussion about that on the net.

My setup...

  • Thinkpad X61 w/ 4G of RAM
  • Linux 2.6.39
  • XFS on encrypted LVM (default Debian install)

Here are the summarized bonie++ results.

Test HDD SDD SDD improvement
Sequential Output (KB/s) 40777 76504 1.87
Sequential Input (KB/s) 50883 89495 1.75
Random Seeks (Hz) 115.7 8242 71.23

Detailed results follow.

SATA connected...

  • HDD (direct, internal SATA)

    ------Sequential Output------
    -Per Chr- --Block-- -Rewrite-
    K/sec %CP K/sec %CP K/sec %CP
      507  96 40777   9 18916   4
    21918us   30049ms    4885ms  
    
    
    ------Sequential Create------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
     4205  33 +++++ +++  7906  56
      323ms     361us   36194us  
    
    
    --Sequential Input-
    -Per Chr- --Block--
    K/sec %CP K/sec %CP
     1188  98 50883   6
    28682us     427ms  
    
    
    --Random-
    --Seeks--
     /sec %CP
    115.7   3
     1258ms
    
    
    --------Random Create--------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
     4969  41 +++++ +++  8127  58
    33240us     248us   17470us
    
    
    1.96,1.96,oxygen,1,1308235638,8G,,507,96,40777,9,18916,4,1188,98,50883,6,115.7,3,16,,,,,4205,33,+++++,+++,7906,56,4969,41,+++++,+++,8127,58,21918us,30049ms,4885ms,28682us,427ms,1258ms,323ms,361us,36194us,33240us,248us,17470us
    
  • SDD (direct, internal SATA)

    $ bonnie++
    ...
    
    
    ------Sequential Output------
    -Per Chr- --Block-- -Rewrite-
    K/sec %CP K/sec %CP K/sec %CP
      699  98 76504  11 33240   5
    13000us     138ms    3195ms  
    
    
    ------Sequential Create------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
     1685  18 +++++ +++  1566  15
    19248us     347us   16185us  
    
    
    --Sequential Input-
    -Per Chr- --Block--
    K/sec %CP K/sec %CP
     1766  98 89495   9
     9253us     115ms  
    
    
    --Random-
    --Seeks--
     /sec %CP
     8242 156
    18453us
    
    
    --------Random Create--------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
     1442  16 +++++ +++  1407  14
    16373us    1645us   40035us
    
    
    1.96,1.96,oxygen,1,1308421092,8G,,699,98,76504,11,33240,5,1766,98,89495,9,8242,156,16,,,,,1685,18,+++++,+++,1566,15,1442,16,+++++,+++,1407,14,13000us,138ms,3195ms,9253us,115ms,18453us,19248us,347us,16185us,16373us,1645us,40035us
    

USB connected...

  • HDD (external USB encolosure)

    $ bonnie++
    ...
    TBD
    
  • SDD (external USB encolosure)

    $ bonnie++
    ...
    
    
    ------Sequential Output------
    -Per Chr- --Block-- -Rewrite-
    K/sec %CP K/sec %CP K/sec %CP
      236  97 27309   5 14605   4
    49235us    6536ms    6152ms  
    
    
    ------Sequential Create------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
     9045  58 +++++ +++ 12715  76
      181ms     653us     362us  
    
    
    --Sequential Input-
    -Per Chr- --Block--
    K/sec %CP K/sec %CP
      759  99 39972   4
    15913us   17705us  
    
    
    --Random-
    --Seeks--
     /sec %CP
     1667  36
      507ms
    
    
    --------Random Create--------
    -Create-- --Read--- -Delete--
     /sec %CP  /sec %CP  /sec %CP
    11224  70 +++++ +++ 13911  87
     3317us      73us    3122us
    
    
    1.96,1.96,oxygen,1,1308279549,8G,,236,97,27309,5,14605,4,759,99,39972,4,1667,36,16,,,,,9045,58,+++++,+++,12715,76,11224,70,+++++,+++,13911,87,49235us,6536ms,6152ms,15913us,17705us,507ms,181ms,653us,362us,3317us,73us,3122us
    

Bart's Blog

/hdd-to-ssd

About

I am an embedded Linux software developer and consultant operating under Jukie Networks Inc in Ottawa, Canada.

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first post!





Bart Trojanowski
http://www.jukie.net/~bart
bart@jukie.net