PCI latency tool: useful for what? and why does it freezes my PC

Discussion in 'alt.steinberg.cubase' started by Hueyduck, Mar 6, 2009.

  1. Hueyduck Guest

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    Hello everyone,

    I have two questions regarding PCI latency timing:

    Have any of you ever noticed performances improvement after having
    lowered PCI latency of your PCI-e graphic card ?

    I tried this softwares (PCI latency tool 3.1 v2) on my old PC and it
    launches ok. Of course, I dont' need it on my old machine since it has a
    AGP graphic card.

    On my new PC (wich does have a PCI-e graphic card), launching the
    software makes my PC freeze. (MB= GA-EP35C-DS3R). The "PCI latency tool"
    service is started, but I wondered If the software could be needing
    another service that was previously stopped by the administrator of the
    PC ;)


    As I don't know exactly what improvement I'm aiming at with this tweak,
    I'd rather ask the cubase community if it'sworth the time looking for a
    solution.


    I'm a bit torn between the "If it's not broken, don't fix it" and the
    instinct that leads one to obtain the best from it's machine.



    Huey
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  2. Steve Guest

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    The PCI Latency tool was aimed at correcting pops and clicks in audio
    because of bandwidth problems on the PCI bus. It simply adjusts the
    priority given to each device on the PCI bus. If you were having problems
    with your sound card dropping out while recording you would set the priority
    to your sound card higher than anything else on the PCI bus using the tool
    so that other devices would always yield bandwidth to it. It doesn't make
    anything faster and in your case it's slowing your machine down by crashing
    it.

    If you want things to load faster, mix down faster buy a faster computer.
    If you want to get through recording things faster play things at 2x the
    tempo and pitch then cut the bitrate in half when you are playing it back.

    "Hueyduck" <> wrote in message
    news:49b16342$0$18941$...
    > Hello everyone,
    >
    > I have two questions regarding PCI latency timing:
    >
    > Have any of you ever noticed performances improvement after having lowered
    > PCI latency of your PCI-e graphic card ?
    >
    > I tried this softwares (PCI latency tool 3.1 v2) on my old PC and it
    > launches ok. Of course, I dont' need it on my old machine since it has a
    > AGP graphic card.
    >
    > On my new PC (wich does have a PCI-e graphic card), launching the software
    > makes my PC freeze. (MB= GA-EP35C-DS3R). The "PCI latency tool" service is
    > started, but I wondered If the software could be needing another service
    > that was previously stopped by the administrator of the PC ;)
    >
    >
    > As I don't know exactly what improvement I'm aiming at with this tweak,
    > I'd rather ask the cubase community if it'sworth the time looking for a
    > solution.
    >
    >
    > I'm a bit torn between the "If it's not broken, don't fix it" and the
    > instinct that leads one to obtain the best from it's machine.
    >
    >
    >
    > Huey
  3. Hueyduck Guest

    Member Since:
    Message Count:
    0
    Re: PCI latency tool: useful for what? and why does it freezes myPC

    Steve a écrit :
    > The PCI Latency tool was aimed at correcting pops and clicks in audio
    > because of bandwidth problems on the PCI bus. It simply adjusts the
    > priority given to each device on the PCI bus. If you were having problems
    > with your sound card dropping out while recording you would set the priority
    > to your sound card higher than anything else on the PCI bus using the tool
    > so that other devices would always yield bandwidth to it. It doesn't make
    > anything faster and in your case it's slowing your machine down by crashing
    > it.


    Thanks for this information. Actually, my questions had emerged after I
    had just read that sometimes, in some audio configurations, the PCI-e
    card latency was set in such a way that it would produce clicks and pops
    in the audio flow during CPU intensive playbacks.
    It happens that while I was reading that, I was making tests to compare
    the performances of my current PC and my brand new one I just built.
    The test is simply that: I open the exact same song in both systems and
    I compare the CPU load at different latency .
    Anyway: this is the moment where I tweak things once and almost for all
    onmy new computer, so if the "PCI latency" had been a simple things to
    do in order to gain a little performance, I would have done it.
    -

    >
    > If you want things to load faster, mix down faster buy a faster computer.
    > If you want to get through recording things faster play things at 2x the
    > tempo and pitch then cut the bitrate in half when you are playing it back.

    -
    Thanks you, Steve.

    Huey
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