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  2. CPUID - Wikipedia

    en.wikipedia.org/wiki/CPUID

    Advancing to subleaf 1 (by making another call to CPUID with EAX=Bh and ECX=1) could for instance return 201h in ECX, meaning that this is a core-type level, and 4 in EBX because there are 4 logical processors in the package; EAX returned could be any value greater than 3, because it so happens that bit number 2 is used to identify the core in ...

  3. x86 instruction listings - Wikipedia

    en.wikipedia.org/wiki/X86_instruction_listings

    Read Time Stamp Counter and Processor ID. RDTSCP: 0F 01 F9: Read Time Stamp Counter and processor core ID. [v] The TSC value is placed in EDX:EAX and the core ID in ECX. [w] Usually 3 [x] K8, [y] Nehalem, Silvermont, Nano: POPCNT [z] Population Count. POPCNT r16,r/m16 POPCNT r32,r/m32: F3 0F B8 /r: Count the number of bits that are set to 1 in ...

  4. Process identifier - Wikipedia

    en.wikipedia.org/wiki/Process_identifier

    In computing, the process identifier (a.k.a. process ID or PID) is a number used by most operating system kernels—such as those of Unix, macOS and Windows—to uniquely identify an active process. This number may be used as a parameter in various function calls, allowing processes to be manipulated, such as adjusting the process's priority or ...

  5. Process control block - Wikipedia

    en.wikipedia.org/wiki/Process_control_block

    Process Number (PID) – unique identification number for each process (also known as Process ID); Program Counter (PC) – a pointer to the address of the next instruction to be executed for this process; CPU Registers – register set where process needs to be stored for execution for running state;

  6. ps (Unix) - Wikipedia

    en.wikipedia.org/wiki/Ps_(Unix)

    %CPU: How much of the CPU the process is using %MEM: How much memory the process is using ADDR: Memory address of the process C or CP: CPU usage and scheduling information COMMAND* Name of the process, including arguments, if any NI: nice value F: Flags PID: Process ID number PPID: ID number of the process's parent process PRI: Priority of the ...

  7. Model-specific register - Wikipedia

    en.wikipedia.org/wiki/Model-specific_register

    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 [6] package provides a reference implementation.

  8. Linux namespaces - Wikipedia

    en.wikipedia.org/wiki/Linux_namespaces

    A user namespace contains a mapping table converting user IDs from the container's point of view to the system's point of view. This allows, for example, the root user to have user ID 0 in the container but is actually treated as user ID 1,400,000 by the system for ownership checks. A similar table is used for group ID mappings and ownership ...

  9. List of AMD CPU microarchitectures - Wikipedia

    en.wikipedia.org/wiki/List_of_AMD_CPU_micro...

    AMD now refers to the codename K8 processors as the Family 0Fh processors. 10h and 0Fh refer to the main result of the CPUID x86 processor instruction. In hexadecimal numbering, 0F(h) (where the h represents hexadecimal numbering) equals the decimal number 15, and 10(h) equals the decimal number 16.