NEC Express5800 Series Maintenance Manual page 101

Chapter 2 Useful Features
(b) I/O Options Menu
When you select System Configuration > BIOS/Platform Configuration (RBSU) > Power and Performance
Options > I/O Options from the System Utilities, the I/O Options menu appears.
For details about the options, see the table below.
Option
ACPI SLIT
Intel NIC DMA Channels
(IOAT)
Memory Proximity
Reporting for I/O
Parameter
[Enabled]
Disabled
[Enabled]
Disabled
[Enabled]
Disabled
Express5800/R120h-1E, R120h-2E Maintenance Guide
Description
The ACPI SLIT (System Locality Information
Table) defines the relative access times between
processors, memory subsystems,
subsystems. Operating systems that support the
SLIT can use this information to improve
performance by allocating
workloads more efficiently.
Use this option to select the Intel NIC DMA
Channels support. This is a NIC acceleration
option that only runs on Intel-based NICs.
When enabled, the System BIOS reports the
proximity relationship between I/O devices and
system memory to the operating system. Most
operating systems can use this information to
efficiently assign memory resources for devices,
such as network controllers and storage devices.
Additionally, certain I/O devices might not be able
to take advantage of I/O handling benefits if their
OS drivers are not properly optimized to support
this feature. See your operating system and I/O
device documentation for more details.
[ ]: Default setting
1. System Utilities
and I/O
resources and
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