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Article:
  An Unencrypted Look at FileVault
Subject:   FileVault performance tax
Date:   2003-12-20 05:05:20
From:   anonymous2
The author is a bit wrong about why FileVault has no perceivable performance impact. He claims that Mac OS X is fast enough to handle the encryption/decryption with out user notice. This is not true. It is precisely because Mac OS X is so *slow* that you don't notice the encryption/decryption overhead. A Mac OS X system call has an order of magnitude more overhead than a Linux system call for example. And since there is already so much overhead in a Mac OS X kernel operation, adding the additional encryption/decryption overhead is unoticeable.

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  1. FileVault performance tax
    2003-12-21 17:22:15  anonymous2 [View]

  2. FileVault performance tax
    2003-12-21 07:42:53  anonymous2 [View]

    • FileVault performance tax
      2003-12-22 01:07:13  anonymous2 [View]

      • FileVault performance tax
        2008-07-21 15:50:00  softweyr [View]

  3. FJ de Kermadec photo FileVault performance tax
    2003-12-20 07:20:37  FJ de Kermadec | O'Reilly Blogger [View]

  4. FileVault performance tax
    2003-12-20 07:14:57  anonymous2 [View]

    • FileVault performance tax
      2003-12-21 15:03:51  tychay [View]

      • FileVault performance tax
        2003-12-26 21:19:45  anonymous2 [View]

        • FileVault performance tax
          2004-09-29 17:52:42  rhigginbo [View]

        • FileVault performance tax
          2004-09-29 17:48:11  rhigginbo [View]

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