Dante PCIe-R Card
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Moderation:
a.
Go to Control Panel > Network and Internet > Network Connections.
b.
Right-click the network adaptor you use for Dante traffic, and select ‘Properties’.
c.
Click ‘Configure’.
d.
Select the ‘Advanced’ tab.
e.
Click ‘Flow Control’ and set the value to ‘Disabled’.
f.
Click ‘Interrupt Moderation’ and adjust for best performance (reduced latency vs. CPU
usage).
g.
Click OK.
Advanced Configuration
1. Many motherboards provide additional configuration options. To achieve reliable performance at very
low buffer settings, the following may also be required:
n Set CStates to OFF
n Disable Intel SpeedStep
n Enable TurboBoost
2. Surprisingly, hardware RAID can be problematic for low-latency performance. This might sound
counter-intuitive, but the device drivers required to run hardware RAID controllers (in particular, Intel
RAID controllers that may be built into your motherboard) can result in excessive DPC spikes in the
system. This prevents the audio hardware and DAW from timely access to memory, which will limit
your ability to reduce ASIO buffers to the minimum possible value. Your system running a driver
called IASTOR.SYS is indicative of hardware RAID being enabled.
Many motherboards provide an option to disable this, however, it will require the hard disk to be re-
formatted and the OS re-installed. If you really know what you are doing, it is certainly possible to
install a second disk and selectively boot between the two as you toggle RAID on or off. Remember
that a disk formatted for a hardware Raid system will not be readable if raid is disabled, and vice
versa.
Very Advanced Configuration
Microsoft provide a Windows Performance Toolkit as part of the development SDK. This includes a tool
called “xperf”. This is a very advanced tool that can help you to identify which drivers are responsible for
any DPC or Interrupt latency in your system. If you have access to this tool, you can use it to identify
components in your system that may be causing DPC or other forms of system latency. Refer to
http://msdn.microsoft.com/en-us/performance/cc825801.aspx for more information.
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