documentation/hardware.md

How to verify PCIe slot

If you install card in 4x lane PCIe slot, while card designed for 8x PCIe, most likely your card wont be able to reach max bandwidth and will drop packets due PCIe bus bandwidth limit.

pppoe01 ~ # cat /sys/class/net/eth3/device/current_link_width 
8
pppoe01 ~ # cat /sys/class/net/eth3/device/max_link_width 
8

This means card working on maximum PCI lanes

pppoe04 ~ # cat /sys/class/net/eth5/device/current_link_width 
4
pppoe04 ~ # cat /sys/class/net/eth5/device/max_link_width 
8

And here you can see card working in PCIe 4x lanes slot, while it supports 8x.

HP Proliant Gen9 CPU dynamic frequency settings

1. Access the System Utilities:

   • Power on or reboot the server.
   • During the boot process, when prompted, press the F9 key to launch the System Utilities.

2. Navigate to the Power Profile Setting:

   • Within the System Utilities, select "System Configuration."
   • Choose "BIOS/Platform Configuration (RBSU)."
   • Navigate to "Power Management."
   • Select "Power Profile" and press Enter.

3. Select the Desired Power Profile:

   • You'll see a list of available power profiles.
   • Choose the profile: Custom.
   • Press Enter to confirm your selection.

4. Go back to the main menu

5. From the System Utilities screen:

   • select System Configuration, then BIOS/Platform Configuration (RBSU) > Power Management > Power Regulator and press Enter.
   • Select: "OS Control Mode" —Processors run in their maximum power and performance state at all times, unless the OS enables a power management policy.
   • Press Enter to confirm your selection.

6. Press F10 to save your changes and exit.