CLI Guide

BIOS.ProcSettings.CpuFeatureRmss (Read or Write)
Description
Enables or disables REP-MOV/STOS Streaming support. This setting can affect performance, depending
on the application running on the server.
Legal Values
● Enabled
● Disabled
Default Value Not Applicable
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
Dependency Not applicable
BIOS.ProcSettings.CpuInterconnectBusSpeed (Read or Write)
Description
This setting governs the frequency of the communication links among the CPUs in the system. Note that
standard and basic bin processors support lower link frequencies than the advanced parts do. Maximum
Data Rate indicates that the BIOS will run the communication links at the maximum frequency supported
by the processors. You can also select specific frequencies that the processors support, which can vary.
For best performance, you should choose the Maximum Data setting. Any reduction in the communication
link frequency will affect the performance of non-local memory accesses and cache coherency traffic. In
addition, it can slow access to non-local I/O devices from a particular CPU. However, if power saving
considerations outweigh performance, you may want to reduce the frequency of the CPU communication
links. If you do this, you should localize memory and I/O accesses to the nearest NUMA node to minimize
the impact to system performance.
Only available if 2 or more CPUs are present. On 14G only MaxDataRate, 10GTps, and 9GTps
Legal Values
● MaxDataRate
● 10GTps
● 9GTps
Default Value Not Applicable
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
Dependency Not applicable
BIOS.ProcSettings.CpuMinSevAsid (Read or Write)
Description
This field determines the number of Secure Encrypted Virtualization (SEV) ES and non-ES available
Address Space IDs. The number specified is the dividing line between ES and non-ES ASIDs. ES -
Encrypted State - the register save state area is also encrypted along with the entire guest memory area.
The maximum number of SEV ASIDs available depends on installed CPU and memory configuration which
can either be 15, 253 or 509. The default value is 1 and the value entered by user means the number of
non-ES ASIDs starts from the value entered and ends at the maximum number of SEV ASIDs available.
A value of 1 means there are only non-ES ASIDs available. Example 1: If the maximum number of ASIDs
is 15, the default value 1 means there are 15 SEV non-ES ASIDs and 0 SEV ES ASIDs. Example 2: If the
maximum number of ASIDs is 15, the value 4 means there are 12 SEV non-ES ASIDs and 3 SEV ES ASIDs.
Example 3: If the maximum number of ASIDs is 509, the value 40 means there are 470 SEV non-ES ASIDs
and 39 SEV ES ASIDs.
Legal Values None
Default Value Not Applicable
Write Privilege Server Control
License Required iDRAC Express or iDRAC Enterprise
314 BIOS Attributes