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2. Hardware performance counter - Wikipedia

   en.wikipedia.org/wiki/Hardware_performance_counter

   In computers, hardware performance counters (HPC), [1] or hardware counters are a set of special-purpose registers built into modern microprocessors to store the counts of hardware-related activities within computer systems. Advanced users often rely on those counters to conduct low-level performance analysis or tuning.

3. Performance Application Programming Interface - Wikipedia

   en.wikipedia.org/wiki/Performance_Application...

   Counter multiplexing and overflow handling are also supported. Operating system support for accessing hardware counters is needed to use PAPI. For example, prior to 2010, a Linux/x86 kernel had to be patched with a performance monitoring counters driver (perfctr link) to support PAPI. Since Linux version 2.6.32, and PAPI 2010 releases, PAPI can ...

4. List of performance analysis tools - Wikipedia

   en.wikipedia.org/wiki/List_of_performance...

   Sampling profiler with support of hardware events on several architectures. GPL Performance Application Programming Interface (PAPI) Various Library for hardware performance counters on modern microprocessors. Pin by Intel: Linux, Windows, macOS, Android Dynamic binary instrumentation system that allows users to create custom program analysis ...

5. perf (Linux) - Wikipedia

   en.wikipedia.org/wiki/Perf_(Linux)

   It supports hardware performance counters, tracepoints, software performance counters (e.g. hrtimer), and dynamic probes (for example, kprobes or uprobes). [4] In 2012, two IBM engineers recognized perf (along with OProfile) as one of the two most commonly used performance counter profiling tools on Linux. [5]

6. Run-time estimation of system and sub-system level power ...

   en.wikipedia.org/wiki/Run-time_estimation_of...

   Hardware performance counters (HPCs) are a set of special purpose registers built into modern microprocessors to store the counts of hardware-related activities for hardware and software related events. [4] Different models of processors have limited numbers of hardware counters with different events that will satisfy the CPU requirement.

7. Mechanical computer - Wikipedia

   en.wikipedia.org/wiki/Mechanical_computer

   The most common examples are adding machines and mechanical counters, which use the turning of gears to increment output displays. More complex examples could carry out multiplication and division—Friden used a moving head which paused at each column—and even differential analysis.

8. Program counter - Wikipedia

   en.wikipedia.org/wiki/Program_counter

   The instruction counter is at the lower left. The program counter ( PC ), [ 1 ] commonly called the instruction pointer ( IP ) in Intel x86 and Itanium microprocessors , and sometimes called the instruction address register ( IAR ), [ 2 ] [ 1 ] the instruction counter , [ 3 ] or just part of the instruction sequencer, [ 4 ] is a processor ...

9. Counter (digital) - Wikipedia

   en.wikipedia.org/wiki/Counter_(digital)

   Voltage changes on the five outputs of the binary counter counting from 00000, left to 11111 (or 31), right (vertically). In digital logic and computing, a counter is a device which stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock.