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Win XP Pro and Alpha 5 version 4.5

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    #1

    Win XP Pro and Alpha 5 version 4.5

    I searched the board for XP Pro compatibility problems with A5 version 4.5 built 266, but could not find any answer.

    Is there any problem using version 4.5 with XP Pro?

    Thanks
    Tags: None
    #2
    RE: Win XP Pro and Alpha 5 version 4.5

    If memory serves there are two issues:

    1) XP's compatibility mode for Alpha 5 (vers 4.5) should be set to Windows 2000.

    2) If your app is running on a LAN XP's default settings are often configured for client server apps, which permit local buffering and deferred disk writes in order to improve performance with C/S apps. This can wreck any file sharing app like Alpha Five (and others). So the recommendation is to disable "opportunistic locking" in XP.

    -- tom

    Comment

      #3
      RE: Win XP Pro and Alpha 5 version 4.5

      Thanks Tom,

      What do you mean by "opportunistic locking", can you be a little more specific

      Regards

      JP

      Comment

        #4
        RE: Win XP Pro and Alpha 5 version 4.5

        If you want the long story........

        Configuring opportunistic locking in Windows
        View products that this article applies to.
        Article ID : 296264
        Last Review : February 17, 2005
        Revision : 6.0
        This article was previously published under Q296264
        Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
        256986 (http://support.microsoft.com/kb/256986/) Description of the Microsoft Windows Registry
        SUMMARY
        By default, opportunistic locking is enabled for server message block (SMB) clients that run one of the Windows operating systems that is listed at the beginning of this article. Opportunistic locking allows clients to lock files and locally cache information without the risk of another user changing the file. This increases performance for many file operations but may decrease performance in other operations because the server that grants the opportunistic lock must manage the breaking of that lock when another user requests access to the file.
        MORE INFORMATION
        Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.The location of the client registry entry for opportunistic locking has changed from the earlier location in Microsoft Windows NT. In later versions of Windows, you can disable opportunistic locking by setting the following registry entry to 1:
        HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb\Parameters\
        OplocksDisabled REG_DWORD 0 or 1
        Default: 0 (not disabled)

        Note The OplocksDisabled registry value configures Windows clients to either request or not request opportunistic locks on a remote file.
        You can also deny the granting of opportunistic locks by setting the following registry entry to 0:
        HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters
        EnableOplocks REG_DWORD 0 or 1
        Default: 1 (Enabled by Default)

        Note The EnableOplocks value configures Windows-based servers (including Workstations sharing files) to allow or deny opportunistic locks on local files.
        In addition, you can use the following values to tune opportunistic locking for Windows-based computers that have granted opportunistic locks.

        The following value specifies the minimum link throughput that the server allowed before it disables raw and opportunistic locks for this connection:
        MinLinkThroughput REG_DWORD 0 to infinite bytes per second
        Default: 0
        The following value specifies the maximum time that is allowed for a link delay. If delays exceed this number, the server disables raw I/O and opportunistic locking for this connection:
        MaxLinkDelay REG_DWORD 0 to 100,000 seconds
        Default: 60
        The following value specifies the time that the server waits for a client to respond to an oplock break request (smaller values allow detection of crashed clients more quickly, but might potentially cause loss of cached data):
        OplockBreakWait REG_DWORD 10 to 180 seconds
        Default: 35


        Note You must restart the computer for these registry changes to take effect.

        --------------------------------------------------------------------------------

        APPLIES TO
        � Microsoft Windows Server 2003, Standard Edition
        � Microsoft Windows Server 2003, Enterprise Edition
        � Microsoft Windows Server 2003, Datacenter Edition
        � Microsoft Windows Server 2003, Web Edition
        � Microsoft Windows Server 2003, Datacenter Edition
        � Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
        � Microsoft Windows XP Professional
        � Microsoft Windows XP Tablet PC Edition
        � Microsoft Windows XP Professional 64-Bit Edition (Itanium)
        � Microsoft Windows 2000 Server
        � Microsoft Windows 2000 Advanced Server
        � Microsoft Windows 2000 Professional Edition
        � Microsoft Windows 2000 Datacenter Server
        � Microsoft Windows Small Business Server 2003 Premium Edition
        � Microsoft Windows Small Business Server 2003 Standard Edition
        There can be only one.

        Comment

          #5
          RE: Win XP Pro and Alpha 5 version 4.5

          Many thanks to both of you,

          I really appreciate

          Regards

          JP

          Comment

            #6
            RE: Win XP Pro and Alpha 5 version 4.5

            Is your recommendation for XP Service pack 1 or 2.

            On one station I have Service pack 1 and A5V4.5 operates quite well and on the station with Service pack 2 it is extremely slow. On the latest we have also the last updates from Windows.

            One more point, Office 2003 seems to be conflicting with A5V4.5

            Thanks again

            Comment

              #7
              RE: Win XP Pro and Alpha 5 version 4.5

              I hope Tom will weigh back in and assist you with this question. I was trying to help with the question of disabling the locking. I do not have any direct knowledge of V4.5 and xp conflicts.
              There can be only one.

              Comment

                #8
                RE: Win XP Pro and Alpha 5 version 4.5

                Thanks

                JP

                Comment

                  #9
                  RE: Win XP Pro and Alpha 5 version 4.5

                  I'm sorry to say that I don't have any specific suggestions for you.

                  I use A5V4.5 on two different XP machines. Both have SP2 and all Windows updates. It runs just fine. No noticeable slow down.

                  I have both installations set to run Alpha in Windows 2000 compatibility mode. You havent' said if you followed the earlier recommendation or not. I assume you have.

                  I do NOT have Office 2003 installed on either machine. I'm using Office 2000, with its patches. Do not know if this is significant.

                  In other forums folks have reported that performance will slow down dramatically if security services are protecting your database folder on the server. Certain antivirus and spyblocking programs actually screen all disk writes before passing them through to the server. I hesitate to advise you on this since I'm not a security expert by any means. Others have recommended that these systems be configured to exclude the primary database folder on the server from these automatic protections.

                  Otherwise, I'd suggest you compare the setup of the machines that are running well against those that are running slowly. Is there anything else that might explain the difference you're seeing, other than SP2? (things to look for: network protocols the same? mapped drives the same ? etc.)

                  I suppose if you're really desperate, you might consider rolling back SP2 to SP1 to see if that makes a difference. This at least would help to confirm your suspicion that SP2 is at fault.

                  You could also begin searching the Microsoft Knowledgebase for articles dealing with network performance of file sharing databases and SP2.

                  It seems to me this is a Microsoft issue. V.4.5 was released long before Office 2003, XP, or SP2.

                  Dare I suggest it's time to upgrade Alpha Five?

                  -- tom

                  Comment

                    #10
                    RE: Win XP Pro and Alpha 5 version 4.5

                    Thanks Tom,


                    Application runs in Windows 2000 compatibility mode an no improvement.

                    I will follow your suggestion to rool back to WP SP1 and see what happens.

                    One other station is XP SP2 and runs fine but that is an upgrade from SP1, while the one I am having problem with is an original SP2, not an upgrade from SP1.

                    A third station is running on XP SP1 and works also OK.

                    I am considering using A5V6 and have downloaded the trial version that i will try next week after the station is rolled back to SP1

                    I will let you know of the results.

                    Thanks again for your input I really appreciate

                    Regards

                    JP

                    Comment

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