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"XP Compatibility" mode - slow VHD...

Discussion in 'Windows 7' started by Newman, Apr 12, 2010.

  1. Newman

    Newman Flightless Bird

    I have a realively new machine running Win7 x64. The person using this
    machine pretty much has to run the "compatibility mode" because
    certain software is not compatible with Win7 (yet).

    She has been complaining about the machine running slowly, and I have
    been digging. The Win7 machine is F-A-S-T!!! But WinXPis very slow.

    I was toubleshooting another problem, and I think I finally have
    discovered the problem...

    VHD disk performance - or lac thereof!

    I used a benchmark, and the Win7 machine's RAID5 is about 20 times
    faster than her pervious machines solo hard disk. However, when I run
    the benchmark inside the VPC for WinXP, it reports performance almost
    100 times slower than her Win7 host which roughly equates to 1/3 the
    disk permormance of her *old* computer!

    Given how dependant Windows is on disk, this most certainly is a HUGE
    bottleneck.

    Question is....

    What can be done about it????

    Please tell me there is a "magic bullet" here! This woman has
    "tommorows machine today", and the software just is not ready. I know
    that Hyper-V on our server is a whole lot fater than this, so why is
    VPC is *slow*????

    Help!
     
  2. Trev

    Trev Flightless Bird

    "Newman" <cloakedrun2001@yahoo.ca> wrote in message
    news:7i37s51436q5g57i3o6ucjrv9oodo511eu@4ax.com...
    > I have a realively new machine running Win7 x64. The person using this
    > machine pretty much has to run the "compatibility mode" because
    > certain software is not compatible with Win7 (yet).
    >
    > She has been complaining about the machine running slowly, and I have
    > been digging. The Win7 machine is F-A-S-T!!! But WinXPis very slow.
    >
    > I was toubleshooting another problem, and I think I finally have
    > discovered the problem...
    >
    > VHD disk performance - or lac thereof!
    >
    > I used a benchmark, and the Win7 machine's RAID5 is about 20 times
    > faster than her pervious machines solo hard disk. However, when I run
    > the benchmark inside the VPC for WinXP, it reports performance almost
    > 100 times slower than her Win7 host which roughly equates to 1/3 the
    > disk permormance of her *old* computer!
    >
    > Given how dependant Windows is on disk, this most certainly is a HUGE
    > bottleneck.
    >
    > Question is....
    >
    > What can be done about it????
    >
    > Please tell me there is a "magic bullet" here! This woman has
    > "tommorows machine today", and the software just is not ready. I know
    > that Hyper-V on our server is a whole lot fater than this, so why is
    > VPC is *slow*????
    >
    > Help!


    Why Not Install as Xp compatibly into WIN 7 rather then Virtual Machine
    http://www.trevorbowden.co.uk/Win7compatmode.html
     
  3. c_atiel

    c_atiel Flightless Bird

    The only software that will not run in Win 7 64 is so old it probably has 16
    bit code in it. That software may or may not run on Win 7 32 in XP
    compatibility mode.
    If you really have to run software that old why are you using a Win 7 OS?
    It is simple to create a dual boot with XP and then run the apps directly on
    XP. Anything that runs on Win7 will run on XP but not versa vice.
     
  4. Fishface

    Fishface Flightless Bird

    Newman wrote:

    > I was toubleshooting another problem, and I think I finally have
    > discovered the problem...
    >
    > VHD disk performance - or lac thereof!
    >
    > I used a benchmark, and the Win7 machine's RAID5 is about 20 times
    > faster than her pervious machines solo hard disk. However, when I run
    > the benchmark inside the VPC for WinXP, it reports performance almost
    > 100 times slower than her Win7 host which roughly equates to 1/3 the
    > disk permormance of her *old* computer!
    >
    > Given how dependant Windows is on disk, this most certainly is a HUGE
    > bottleneck.
    >
    > Question is....
    >
    > What can be done about it????
    >
    > Please tell me there is a "magic bullet" here! This woman has
    > "tommorows machine today", and the software just is not ready. I know
    > that Hyper-V on our server is a whole lot fater than this, so why is
    > VPC is *slow*????


    You can read about my experience in this thread:
    http://groups.google.com/group/alt....read/thread/b8a10e37f1f7049a/a2710b4c8fa8699e

    It seems that the Virtual XP Mode accesses the Windows 7 local disks as
    "Disk from Remote Desktop Connection."

    No solution here, but possibly more insight?
     
  5. Fishface

    Fishface Flightless Bird

  6. Fishface

    Fishface Flightless Bird

  7. Newman

    Newman Flightless Bird

    On Mon, 12 Apr 2010 22:55:31 +0100, "Trev" <trev_uk@hotmail.com
    invalid> wrote:

    >
    >"Newman" <cloakedrun2001@yahoo.ca> wrote in message
    >news:7i37s51436q5g57i3o6ucjrv9oodo511eu@4ax.com...
    >> I have a realively new machine running Win7 x64. The person using this
    >> machine pretty much has to run the "compatibility mode" because
    >> certain software is not compatible with Win7 (yet).
    >>
    >> She has been complaining about the machine running slowly, and I have
    >> been digging. The Win7 machine is F-A-S-T!!! But WinXPis very slow.
    >>
    >> I was toubleshooting another problem, and I think I finally have
    >> discovered the problem...
    >>
    >> VHD disk performance - or lac thereof!
    >>
    >> I used a benchmark, and the Win7 machine's RAID5 is about 20 times
    >> faster than her pervious machines solo hard disk. However, when I run
    >> the benchmark inside the VPC for WinXP, it reports performance almost
    >> 100 times slower than her Win7 host which roughly equates to 1/3 the
    >> disk permormance of her *old* computer!
    >>
    >> Given how dependant Windows is on disk, this most certainly is a HUGE
    >> bottleneck.
    >>
    >> Question is....
    >>
    >> What can be done about it????
    >>
    >> Please tell me there is a "magic bullet" here! This woman has
    >> "tommorows machine today", and the software just is not ready. I know
    >> that Hyper-V on our server is a whole lot fater than this, so why is
    >> VPC is *slow*????
    >>
    >> Help!

    >
    >Why Not Install as Xp compatibly into WIN 7 rather then Virtual Machine
    >http://www.trevorbowden.co.uk/Win7compatmode.html



    It is not a "hardware" compatibility problem, it is a software
    compatibility problem. Basically, ScotiaBank's software and web-site
    do NOT support any 64 bit O/S nor do they support IE8 or any version
    of Firefox.

    In my experience, Banks are notoriously slow to adopt and adapt to new
    software technology. This is likel because there are lots of $$$$
    involved, so they have to vet the applications fully.

    I recall when MS Java was rendered defunct by the courts, and then
    security bugs were found in it. I still had to have this user with the
    old MS Java installed because the banks were too slow in approving Sun
    Java.

    <sigh>
     
  8. Newman

    Newman Flightless Bird

    On Mon, 12 Apr 2010 18:17:01 -0700, "c_atiel" <fac_187@hotmail.com>
    wrote:

    >The only software that will not run in Win 7 64 is so old it probably has 16
    >bit code in it. That software may or may not run on Win 7 32 in XP
    >compatibility mode.
    >If you really have to run software that old why are you using a Win 7 OS?
    >It is simple to create a dual boot with XP and then run the apps directly on
    >XP. Anything that runs on Win7 will run on XP but not versa vice.


    I am slowing getting coming to this conclusion. The problem initially
    was one of license. THat is, the WInXP compatibility mode is "free". A
    dual boot would require a dual license. THat said, another WInXP
    license would be way cheaper than all the BS that I have gone through
    with "compatibility mode".

    MS lied again. :(
     

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