Intel Hyper-Threading Technology set IntelHyperThread |
Whether the processor uses Intel Hyper-Threading Technology, which allows multithreaded software applications to execute threads in parallel within each processor. This can be one of the following:
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Disabled—The processor does not permit hyperthreading.
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Enabled—The processor allows for the parallel execution of multiple threads.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Number of Enabled Cores set CoreMultiProcessing |
Allows you to disable one or more of the physical cores on the server. This can be one of the following:
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All—Enables all physical cores. This also enables Hyper Threading on the associated logical processor cores.
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1 through n—Specifies the number of physical processor cores that can run on the server. Each physical core has an associated logical core.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Execute Disable set ExecuteDisable |
Classifies memory areas on the server to specify where application code can execute. As a result of this classification, the processor disables code execution if a malicious worm attempts to insert code in the buffer. This setting helps to prevent damage, worm propagation, and certain classes of malicious buffer overflow attacks. This can be one of the following:
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Disabled—The processor does not classify memory areas.
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Enabled—The processor classifies memory areas.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature. |
Intel VT set IntelVT |
Whether the processor uses Intel Virtualization Technology (VT), which allows a platform to run multiple operating systems and applications in independent partitions. This can be one of the following:
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Disabled—The processor does not permit virtualization.
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Enabled—The processor allows multiple operating systems in independent partitions.
Note |
If you change this option, you must power cycle the server before the setting takes effect. |
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Intel VT-d set IntelVTD |
Whether the processor uses Intel Virtualization Technology for Directed I/O (VT-d). This can be one of the following:
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Disabled—The processor does not use virtualization technology.
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Enabled—The processor uses virtualization technology.
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Intel VT-d Coherency Support set CoherencySupport |
Whether the processor supports Intel VT-d Coherency. This can be one of the following:
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Disabled—The processor does not support coherency.
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Enabled—The processor uses VT-d Coherency as required.
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Intel VT-d ATS Support set ATS |
Whether the processor supports Intel VT-d Address Translation Services (ATS). This can be one of the following:
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Disabled—The processor does not support ATS.
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Enabled—The processor uses VT-d ATS as required.
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CPU Performance set CPUPerformance |
Sets the CPU performance profile for the server. The performance profile consists of the following options:
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DCU Streamer Prefetcher
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DCU IP Prefetcher
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Hardware Prefetcher
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Adjacent Cache-Line Prefetch
This can be one of the following:
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Enterprise—All options are enabled.
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High_Throughput—Only the DCU IP Prefetcher is enabled. The rest of the options are disabled.
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HPC—All options are enabled. This setting is also known as high performance computing.
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Custom—All performance profile options can be configured from the BIOS setup on the server. In addition, the Hardware Prefetcher and Adjacent Cache-Line Prefetch options can be configured in the fields below.
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Hardware Prefetcher set HardwarePrefetch |
Whether the processor allows the Intel hardware prefetcher to fetch streams of data and instruction from memory into the unified second-level cache when necessary. This can be one of the following:
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Disabled—The hardware prefetcher is not used.
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Enabled—The processor uses the hardware prefetcher when cache issues are detected.
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Adjacent Cache Line Prefetcher set AdjacentCacheLinePrefetch |
Whether the processor fetches cache lines in even/odd pairs instead of fetching just the required line. This can be one of the following:
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Disabled—The processor only fetches the required line.
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Enabled— The processor fetches both the required line and its paired line.
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DCU Streamer Prefetch set DcuStreamerPrefetch |
Whether the processor uses the DCU IP Prefetch mechanism to analyze historical cache access patterns and preload the most relevant lines in the L1 cache. This can be one of the following:
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Disabled—The processor does not try to anticipate cache read requirements and only fetches explicitly requested lines.
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Enabled—The DCU prefetcher analyzes the cache read pattern and prefetches the next line in the cache if it determines that it may be needed.
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DCU IP Prefetcher set DcuIpPrefetch |
Whether the processor uses the DCU IP Prefetch mechanism to analyze historical cache access patterns and preload the most relevant lines in the L1 cache. This can be one of the following:
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Disabled—The processor does not preload any cache data.
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Enabled—The DCU IP prefetcher preloads the L1 cache with the data it determines to be the most relevant.
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Direct Cache Access Support set DirectCacheAccess |
Allows processors to increase I/O performance by placing data from I/O devices directly into the processor cache. This setting helps to reduce cache misses. This can be one of the following:
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Disabled—Data from I/O devices is not placed directly into the processor cache.
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Enabled—Data from I/O devices is placed directly into the processor cache.
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Power Technology set CPUPowerManagement |
Enables you to configure the CPU power management settings for the following options:
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Enhanced Intel Speedstep Technology
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Intel Turbo Boost Technology
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Processor Power State C6
Power Technology can be one of the following:
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Custom—The server uses the individual settings for the BIOS parameters mentioned above. You must select this option if you want to change any of these BIOS parameters.
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Disabled—The server does not perform any CPU power management and any settings for the BIOS parameters mentioned above are ignored.
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Energy_Efficient—The server determines the best settings for the BIOS parameters mentioned above and ignores the individual settings for these parameters.
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Enhanced Intel Speedstep Technology set EnhancedIntelSpeedStep |
Whether the processor uses Enhanced Intel SpeedStep Technology, which allows the system to dynamically adjust processor voltage and core frequency. This technology can result in decreased average power consumption and decreased average heat production. This can be one of the following:
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Disabled—The processor never dynamically adjusts its voltage or frequency.
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Enabled—The processor utilizes Enhanced Intel SpeedStep Technology and enables all supported processor sleep states to further conserve power.
We recommend that you contact your operating system vendor to make sure the operating system supports this feature.
Note |
CPUPowerManagement must be set to Custom or the server ignores the setting for this parameter. |
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Intel Turbo Boost Technology set IntelTurboBoostTech |
Whether the processor uses Intel Turbo Boost Technology, which allows the processor to automatically increase its frequency if it is running below power, temperature, or voltage specifications. This can be one of the following:
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Disabled—The processor does not increase its frequency automatically.
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Enabled—The processor utilizes Turbo Boost Technology if required.
Note |
CPUPowerManagement must be set to Custom or the server ignores the setting for this parameter. |
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Processor Power State C6 set ProcessorC6Report |
Whether the BIOS sends the C6 report to the operating system. When the OS receives the report, it can transition the processor into the lower C6 power state to decrease energy usage while maintaining optimal processor performance. This can be one of the following:
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Disabled—The BIOS does not send the C6 report.
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Enabled—The BIOS sends the C6 report, allowing the OS to transition the processor to the C6 low power state.
Note |
CPUPowerManagement must be set to Custom or the server ignores the setting for this parameter. |
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Processor Power State C1 Enhanced set ProcessorC1EReport |
Whether the CPU transitions to its minimum frequency when entering the C1 state. This can be one of the following:
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Disabled—The CPU continues to run at its maximum frequency in C1 state.
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Enabled—The CPU transitions to its minimum frequency. This option saves the maximum amount of power in C1 state.
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Frequency Floor Override set CpuFreqFloor |
Whether the CPU is allowed to drop below the maximum non-turbo frequency when idle. This can be one of the following:
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Disabled— The CPU can drop below the maximum non-turbo frequency when idle. This option decreases power consumption but may reduce system performance.
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Enabled— The CPU cannot drop below the maximum non-turbo frequency when idle. This option improves system performance but may increase power consumption.
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P-STATE Coordination set PsdCoordType |
Allows you to define how BIOS communicates the P-state support model to the operating system. There are 3 models as defined by the Advanced Configuration and Power Interface (ACPI) specification.
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HW_ALL—The processor hardware is responsible for coordinating the P-state among logical processors with dependencies (all logical processors in a package).
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SW_ALL—The OS Power Manager (OSPM) is responsible for coordinating the P-state among logical processors with dependencies (all logical processors in a physical package), and must initiate the transition on all of the logical processors.
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SW_ANY—The OS Power Manager (OSPM) is responsible for coordinating the P-state among logical processors with dependencies (all logical processors in a package), and may initiate the transition on any of the logical processors in the domain.
Note |
CPUPowerManagement must be set to Custom or the server ignores the setting for this parameter. |
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Energy Performance set CpuEngPerfBias |
Allows you to determine whether system performance or energy efficiency is more important on this server. This can be one of the following:
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Balanced_Energy
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Balanced_Performance
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Energy_Efficient
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Performance
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