Chapter 4: UEFI BIOS
89
from issuing a performance penalty before a device fails. Please note that virtual lockstep
mode will only start to work for ADDDC after a faulty DRAM module is spared. The options
are Enable and
Disable
.
Patrol Scrub
Patrol Scrubbing is a process that allows the CPU to correct correctable memory errors
detected in a memory module and send the corrections to the requestor (the original
source). When this feature is set to Enable, the IO hub will read and write back one cache
line every 16K cycles if there is no delay caused by internal processing. By using this
method, roughly 64 GB of memory behind the IO hub will be scrubbed every day. The
options are
Enable
and Disable.
Patrol Scrub Interval (Available when Patrol Scrub is set to Enable)
Use this feature to specify the number of hours (between 0 to 24) required for the system to
complete a full patrol scrubbing. Enter 0 for patrol scrubbing to be performed automatically.
The default setting is
24
.
IIO Con
fi
guration
EV DFX (Device Function On-Hide) Features
When this feature is set to Enable, the EV_DFX Lock Bits that are located in a processor
will always remain clear during electric tuning. The options are
Disable
and Enable.
CPU1 Con
fi
guration/CPU2 Con
fi
guration/CPU3 Con
fi
guration/CPU4
Con
fi
guration
IOU0 (IIO PCIe Br1)
Use this feature to con
fi
gure the PCI-E Bifurcation setting for a PCI-E port speci
fi
ed by the
user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU1 (IIO PCIe Br2)
Use this feature to con
fi
gure the PCI-E Bifurcation setting for a PCI-E port speci
fi
ed by the
user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU2 (IIO PCIe Br3)
Use this feature to con
fi
gure the PCI-E Bifurcation setting for a PCI-E port speci
fi
ed by the
user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
MCP0 (IIO PCIe Br4)
Use this feature to con
fi
gure the PCI-E Bifurcation setting for a PCI-E port speci
fi
ed by the
user. The options are x16 and
Auto
.
