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5.50.8 and SSDs Performance Impact?

What is everyone's experience with encypting SSDs via 5.50.8? Anyone cares to post some times?
We've noticed a serious performance decrease when SSD is encrypted with SGN, regardless of whether full-disk or fast initial encryption was used. This is on new HP machines with i7 processors, running Windows7 x64 and latest SSDs, so both hardware and OS support TRIM operations.

Example numbers, for those who's interested, gathered via CrystalDiskMark 3.0.1:

UNENCRYPTED Corsair CSSD-V128GB2 Drive:

Sequential Read : 212.628 MB/s

Sequential Write : 175.936 MB/s

Random Read 512KB : 155.177 MB/s

Random Write 512KB : 154.502 MB/s

TrueCrypt ENCRYPTED Corsair CSSD-V128GB2 Drive:

Sequential Read : 162.017 MB/s

Sequential Write : 134.865 MB/s

Random Read 512KB : 83.691 MB/s

Random Write 512KB : 60.338 MB/s

SGN 5.50.8 "fast initial encryption" ENCRYPTED Corsair CSSD-V128GB2 Drive:

Sequential Read : 71.869 MB/s

Sequential Write : 69.355 MB/s

Random Read 512KB : 65.140 MB/s

Random Write 512KB : 68.579 MB/s

As you can see, performance impact is quite significant, especially in overall sequential read and write operations. My understanding was that "fast initial encryption" was supposed to be the solution for this performance hit in SSDs, but as you can see, this is not the case.
Can anyone confirm that they are seeing similar figures?
Thanks!

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0 dimitri_limanov over 14 years ago

Hi ssij,
Encryption is definitely the cause of such performance impact. Your best bet is to wait out until 5.60, as it introduced many performance improvements, and not just on SSD front. Here are some numbers from 5.60 Technical Preview:
Unencrypted
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
           Sequential Read :    91.427 MB/s
          Sequential Write :    88.750 MB/s
         Random Read 512KB :    30.581 MB/s
        Random Write 512KB :    38.354 MB/s
    Random Read 4KB (QD=1) :     0.387 MB/s [    94.4 IOPS]
   Random Write 4KB (QD=1) :     0.680 MB/s [   166.0 IOPS]
   Random Read 4KB (QD=32) :     0.778 MB/s [   190.1 IOPS]
Random Write 4KB (QD=32) :     0.675 MB/s [   164.7 IOPS]
Encrypted with 5.60TP:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                          Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
   Sequential Read :    89.933 MB/s
Sequential Write :    84.967 MB/s
   Random Read 512KB :    28.029 MB/s
Random Write 512KB :    31.970 MB/s
Random Read 4KB (QD=1) : 0.320 MB/s [ 84.7 IOPS]
   Random Write 4KB (QD=1) : 0.717 MB/s [ 107.4 IOPS]
   Random Read 4KB (QD=32) : 0.662 MB/s [ 134.9 IOPS]
Random Write 4KB (QD=32) : 0.457 MB/s [ 109.3 IOPS]
Test : 1000 MB [C: 26.0% (121.2/465.5 GB)] (x5)
Date : 2011/01/20 23:47:11
    OS : Windows 7 Enterprise Edition [6.1 Build 7600] (x64)
:11805
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0 dimitri_limanov over 14 years ago

Hi ssij,
Encryption is definitely the cause of such performance impact. Your best bet is to wait out until 5.60, as it introduced many performance improvements, and not just on SSD front. Here are some numbers from 5.60 Technical Preview:
Unencrypted
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
           Sequential Read :    91.427 MB/s
          Sequential Write :    88.750 MB/s
         Random Read 512KB :    30.581 MB/s
        Random Write 512KB :    38.354 MB/s
    Random Read 4KB (QD=1) :     0.387 MB/s [    94.4 IOPS]
   Random Write 4KB (QD=1) :     0.680 MB/s [   166.0 IOPS]
   Random Read 4KB (QD=32) :     0.778 MB/s [   190.1 IOPS]
Random Write 4KB (QD=32) :     0.675 MB/s [   164.7 IOPS]
Encrypted with 5.60TP:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                          Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
   Sequential Read :    89.933 MB/s
Sequential Write :    84.967 MB/s
   Random Read 512KB :    28.029 MB/s
Random Write 512KB :    31.970 MB/s
Random Read 4KB (QD=1) : 0.320 MB/s [ 84.7 IOPS]
   Random Write 4KB (QD=1) : 0.717 MB/s [ 107.4 IOPS]
   Random Read 4KB (QD=32) : 0.662 MB/s [ 134.9 IOPS]
Random Write 4KB (QD=32) : 0.457 MB/s [ 109.3 IOPS]
Test : 1000 MB [C: 26.0% (121.2/465.5 GB)] (x5)
Date : 2011/01/20 23:47:11
    OS : Windows 7 Enterprise Edition [6.1 Build 7600] (x64)
:11805
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