WebSolution is configure prefetchers by using MSR registers from OS level. If you use recent XMRig with root privileges (Linux) or admin privileges (Windows) the miner configure all …
WebFeb 23, 2024 · This article focuses on two of the tools provided by msr-tools: rdmsr and wrmsr. Reading MSRs using RDMSR. The rdmsr tool enables reading the value of a …
Processors from the P6 family onwards (including PentiumPro, Pentium II, III, 4 and Intel Core) have a collection of registers that allow configuration of OS-relevant things such as memory type-range, sysenter/sysexit, local APIC, etc. These MSRs are accessed using special instructions such as RDMSR (Read MSR), WRMSR (Write MSR), and RDTSC.
Examples for rather well-known MSRs are the memory type range registers (MTRRs) and the address-range registers (ARRs). ^ "10.6.2 Test Registers". 80386 PROGRAMMER'S REFERENCE MANUAL (PDF).
Use of the Linux msr kernel module creates a pseudo file "/dev/cpu/ x /msr" (with a unique x for each processor or processor core). A user with permissions to read and/or write to this file can use the file I/O API to access these registers. The msr-tools package provides a reference implementation.
Same MSR might be shared by threads in the same core, cores in the same socket or among all sockets, such that if it's persistent then writing to its "address" on one core will make written value visible at other core even on other socket (if MSR is shared between sockets) - this is how "mailbox" MSRs work among cores.
Each MSR that is accessed by the RDMSR and WRMSR group of instructions is identified by a 32-bit integer. MSRs are 64-bit wide. The presence of MSRs on your processor is indicated by CPUID.01h:EDX[bit 5].
WebFeb 14, 2021 · Run it as administrator, reboot (this will enable HUGE PAGES) and then run every time as administrator: this will set MSR automatically.
Webmsr - x86 CPU MSR access device DESCRIPTION top /dev/cpu/CPUNUM/msr provides an interface to read and write the model-specific registers (MSRs) of an x86 CPU.
WebReads the contents of a 64-bit model specific register (MSR) specified in the ECX register into registers EDX:EAX. (On processors that support the Intel 64 architecture, the high …
WebJun 6, 2023 · So MSR is a function with optional storage attached and accessed via RDMSR/WRMSR instructions by its number ("address"). Check "Intel® 64 and IA-32 …