HDD -> SDD

bartman
2011-06-16

Table of Contents

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

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