Themis RES-22XR3, Руководство по установке

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RES-22XR3 Installation Manual - Configuration 1 Version 1.3
3-12
Themis Computer
NorthBridge Configuration
3.3.3.11 Intel I/OAT
The Intel I/OAT (I/O Acceleration Technology) significantly reduces CPU overhead
by leveraging CPU architectural improvements, freeing resources for more other
tasks. The options are Disabled and
Enabled (default).
3.3.3.12 DCA Technology
Select Enabled to use Intel’s DCA (Direct Cache Access) Technology to improve
data transfer efficiency. The Options are Disabled and
Enabled (default).
3.3.3.13 DCA Prefetch Delay
A DCA Prefetch is used with TOE components to prefetch data in order to shorten
execution cycles and maximize data processing efficiency. Prefetching too fre-
quently can saturate the cache directory and delay necessary cache accesses. This
feature reduces or increases the frequency in which the system prefetches data. The
options are [8], [16],
[32] (default), [40], [48], [56], [64], [72], [80], [88], [96], [104],
[112], and [120].
3.3.3.14 Intel VT-d
Select Enabled to enable Intel's Virtualization Technology support for Direct I/O
VT-d by reporting the I/O device assignments to VMM through the DMAR ACPI
Tables. This feature offers fully-protected I/O resource-sharing across the Intel plat-
forms, providing the user with greater reliability, security and availability in net-
working and data-sharing. The settings are
Enabled (default) and Disabled.
3.3.3.15 Active State Power Management
Select Enabled to start Active-State Power Management for signal transactions
between L0 and L1 Links on the PCI Express Bus. This maximizes power-saving
and transaction speed. The options are Enabled and
Disabled (default).
3.3.3.16 IOH PCI-E Max Payload Size
Some add-on cards perform faster with the coalesce feature, which limits the pay-
load size to 128B; while others, with a payload size of 256B which inhibits the
coalesce feature. Please refer to your add-on card user guide for the desired setting.
The options are
256B (default) and 128B