我有一个客户端正在运行他们在 Vista 上编写的自定义 VB 6 应用程序。该应用程序在 Vista 上安装并运行良好。但是，在一台 Vista PC 上，应用程序的加载和运行速度非常慢。我让 IT 运行了一个进程监控跟踪，我看到了大量的“FAST IO DISALLOWED”结果以及其他问题。什么会导致“FAST IO DISALLOWED”，我该如何解决？请参阅下面的部分跟踪：
更新：似乎应用程序加载正常，但在打开报告等时运行缓慢。
更新：我有一个工作正常的 PC 的踪迹。但是，我相信缓慢是因为他们离开了 ODBC 跟踪。有很多这样的：
10:06:30.7641621 AM Cert.exe 2940 WriteFile C:\Users\clw\AppData\Local\Temp\SQL.LOG SUCCESS Offset: 15,622,144, Length: 4,096, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal
10:03:41.8117795 AM Cert.exe 2940 FileSystemControl C:\Program Files END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8120107 AM Cert.exe 2940 FileSystemControl C:\Program Files\cert client END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8132994 AM Cert.exe 2940 FileSystemControl C:\Users END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8135160 AM Cert.exe 2940 FileSystemControl C:\Users\clw END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8139291 AM Cert.exe 2940 FileSystemControl C:\Users\clw\AppData\Local END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8141457 AM Cert.exe 2940 FileSystemControl C:\Users\clw\AppData\Local\Temp END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8143618 AM Cert.exe 2940 FileSystemControl C:\Windows END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8152178 AM Cert.exe 2940 FileSystemControl C:\Windows\AppPatch END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8156104 AM Cert.exe 2940 FileSystemControl C:\Windows\System32 END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8159341 AM Cert.exe 2940 FileSystemControl C:\Windows\System32\en-US END OF FILE Control: FSCTL_FILE_PREFETCH
10:03:41.8364376 AM Cert.exe 2940 CreateFile C:\Users\clw\AppData\Local\Temp\~DF9022.TMP NAME NOT FOUND Desired Access: Read Data/List Directory, Execute/Traverse, Read Attributes, Disposition: Open, Options: Non-Directory File, Complete If Oplocked, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8365446 AM Cert.exe 2940 CreateFile C:\Users\clw\AppData\Local\Temp\~DFD6E5.TMP NAME NOT FOUND Desired Access: Read Data/List Directory, Execute/Traverse, Read Attributes, Disposition: Open, Options: Non-Directory File, Complete If Oplocked, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8366473 AM Cert.exe 2940 CreateFile C:\Users\clw\AppData\Local\Temp\~DFCFD9.TMP NAME NOT FOUND Desired Access: Read Data/List Directory, Execute/Traverse, Read Attributes, Disposition: Open, Options: Non-Directory File, Complete If Oplocked, Attributes: N, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8458081 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\MSVBVM60.DLL FAST IO DISALLOWED
10:03:41.8458819 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\MSVBVM60.DLL NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8460056 AM Cert.exe 2940 QueryOpen C:\Windows\System32\msvbvm60.dll FAST IO DISALLOWED
10:03:41.8465561 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\SafeBoot\Option REPARSE Desired Access: Query Value, Set Value
10:03:41.8465840 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\SafeBoot\Option NAME NOT FOUND Desired Access: Query Value, Set Value
10:03:41.8466314 AM Cert.exe 2940 RegQueryValue HKLM\SOFTWARE\Policies\Microsoft\Windows\safer\codeidentifiers\TransparentEnabled NAME NOT FOUND Length: 80
10:03:41.8466735 AM Cert.exe 2940 RegOpenKey HKCU\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers NAME NOT FOUND Desired Access: Query Value
10:03:41.8503387 AM Cert.exe 2940 QueryOpen C:\Windows\System32\shimeng.dll FAST IO DISALLOWED
10:03:41.8513365 AM Cert.exe 2940 QueryOpen C:\Windows\System32\shimeng.dll FAST IO DISALLOWED
10:03:41.8524301 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\apphelp.dll FAST IO DISALLOWED
10:03:41.8525127 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\apphelp.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8526418 AM Cert.exe 2940 QueryOpen C:\Windows\System32\apphelp.dll FAST IO DISALLOWED
10:03:41.8535673 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\SafeBoot\Option REPARSE Desired Access: Query Value
10:03:41.8535961 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\SafeBoot\Option NAME NOT FOUND Desired Access: Query Value
10:03:41.8536132 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\Session Manager\AppCompatibility REPARSE Desired Access: Query Value
10:03:41.8536279 AM Cert.exe 2940 RegOpenKey HKLM\System\CurrentControlSet\Control\Session Manager\AppCompatibility NAME NOT FOUND Desired Access: Query Value
10:03:41.8536435 AM Cert.exe 2940 RegOpenKey HKLM\Software\Policies\Microsoft\Windows\AppCompat NAME NOT FOUND Desired Access: Query Value
10:03:41.8540884 AM Cert.exe 2940 RegQueryValue HKCU\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\ShowDebugInfo NAME NOT FOUND Length: 256
10:03:41.8554647 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8563921 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8584068 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\USERENV.dll FAST IO DISALLOWED
10:03:41.8584865 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\USERENV.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8586292 AM Cert.exe 2940 QueryOpen C:\Windows\System32\userenv.dll FAST IO DISALLOWED
10:03:41.8596784 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\Secur32.dll FAST IO DISALLOWED
10:03:41.8597688 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\Secur32.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8598876 AM Cert.exe 2940 QueryOpen C:\Windows\System32\secur32.dll FAST IO DISALLOWED
10:03:41.8609065 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\WINSPOOL.DRV FAST IO DISALLOWED
10:03:41.8609847 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\WINSPOOL.DRV NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8611001 AM Cert.exe 2940 QueryOpen C:\Windows\System32\winspool.drv FAST IO DISALLOWED
10:03:41.8621551 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\MPR.dll FAST IO DISALLOWED
10:03:41.8622367 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\MPR.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8623555 AM Cert.exe 2940 QueryOpen C:\Windows\System32\mpr.dll FAST IO DISALLOWED
10:03:41.8635846 AM Cert.exe 2940 RegQueryValue HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\DllNXOptions\MSVBVM60.DLL NAME NOT FOUND Length: 1,024
10:03:41.8640720 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8647012 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8652669 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8658389 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcGenral.dll FAST IO DISALLOWED
10:03:41.8671217 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcGenral.dll FAST IO DISALLOWED
10:03:41.8685097 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\UxTheme.dll FAST IO DISALLOWED
10:03:41.8685815 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\UxTheme.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8687057 AM Cert.exe 2940 QueryOpen C:\Windows\System32\uxtheme.dll FAST IO DISALLOWED
10:03:41.8698204 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\WINMM.dll FAST IO DISALLOWED
10:03:41.8698927 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\WINMM.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8700262 AM Cert.exe 2940 QueryOpen C:\Windows\System32\winmm.dll FAST IO DISALLOWED
10:03:41.8710641 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\OLEACC.dll FAST IO DISALLOWED
10:03:41.8711384 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\OLEACC.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8712509 AM Cert.exe 2940 QueryOpen C:\Windows\System32\oleacc.dll FAST IO DISALLOWED
10:03:41.8731507 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\NETAPI32.dll FAST IO DISALLOWED
10:03:41.8732118 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\NETAPI32.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8733267 AM Cert.exe 2940 QueryOpen C:\Windows\System32\netapi32.dll FAST IO DISALLOWED
10:03:41.8744751 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\MSACM32.dll FAST IO DISALLOWED
10:03:41.8745411 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\MSACM32.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8746462 AM Cert.exe 2940 QueryOpen C:\Windows\System32\msacm32.dll FAST IO DISALLOWED
10:03:41.8754788 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\VERSION.dll FAST IO DISALLOWED
10:03:41.8755423 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\VERSION.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8756391 AM Cert.exe 2940 QueryOpen C:\Windows\System32\version.dll FAST IO DISALLOWED
10:03:41.8765001 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\sfc.dll FAST IO DISALLOWED
10:03:41.8765651 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\sfc.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8766658 AM Cert.exe 2940 QueryOpen C:\Windows\System32\sfc.dll FAST IO DISALLOWED
10:03:41.8774055 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\sfc_os.DLL FAST IO DISALLOWED
10:03:41.8774647 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\sfc_os.DLL NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8775795 AM Cert.exe 2940 QueryOpen C:\Windows\System32\sfc_os.dll FAST IO DISALLOWED
10:03:41.8787514 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\dwmapi.dll FAST IO DISALLOWED
10:03:41.8788140 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\dwmapi.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a
10:03:41.8789108 AM Cert.exe 2940 QueryOpen C:\Windows\System32\dwmapi.dll FAST IO DISALLOWED
10:03:41.8809343 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8814584 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcGenral.dll FAST IO DISALLOWED
10:03:41.8819923 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8824723 AM Cert.exe 2940 QueryOpen C:\Windows\AppPatch\AcLayers.dll FAST IO DISALLOWED
10:03:41.8828336 AM Cert.exe 2940 QueryOpen C:\Program Files\cert client\SHUNIMPL.dll FAST IO DISALLOWED
10:03:41.8828918 AM Cert.exe 2940 CreateFile C:\Program Files\cert client\SHUNIMPL.dll NAME NOT FOUND Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a