HSP configuration tips

HSP transfer speeds are limited by certain configurations, including certain system settings, network card configuration and hardware (CPU, RAM, disk and network card). For Windows systems, transfer speeds are also influenced by whether Windows is running as a standalone instance or on a VM.

These tips can help you improve your system's transfer speeds.

Running in a VM

If you are running the Cleo Harmony or Cleo VLTrader application in a VM, use Linux for the HSP receiver where possible. If using Linux is not feasible, use the most recent version of Windows Server (with up-to-date drivers from the VM provider) for the HSP receiver.

Network card configuration

If running the Cleo Harmony or Cleo VLTrader application in either a VM or a native OS, ensure that your network cards support Receive Side Scaling and that Receive Side Scaling is enabled in the network card configuration. If Receive Side Scaling is not enabled, individual HSP channels will not be able to scale, that is, increase the amount of data it is capable of receiving over time, which results in slow overall transfer speeds.

Windows-specific configuration

Ensure that Windows has downloaded and applied the latest Windows updates
Ensure the following network configuration parameters are set correctly.
Note: You can view your current network configuration by opening a command prompt and running this command as administrator: netsh int tcp show global

Receive Window Auto-Tuning Level

Set the value of this parameter to normal.

Open a command prompt and run this command as administrator:netsh int tcp set global autotuninglevel=normal

Receive-Side Scaling State

Set the value of this parameter to enabled.

Open a command prompt and run this command as administrator:netsh int tcp set global rss=enabled