Page Table: entry_size 16-64 bytes per page

Q: What is the main function of the Page Table in industrial systems?

The Page Table manages metadata for pages in the buffer pool, enabling efficient memory access, reducing disk operations, and optimizing system performance in industrial computing environments.

Q: How does the Page Table handle page replacement?

It implements algorithms like LRU or Clock to track page usage patterns and determine which pages to evict when the buffer pool reaches capacity, ensuring optimal memory utilization.

Q: What are the key performance metrics for a Page Table?

Lookup speed, memory efficiency, concurrency handling, and accuracy in tracking page states are critical performance indicators for industrial Page Table implementations.

Component Specifications

Definition

The Page Table is a critical component within the Buffer Pool Manager of industrial machinery and computing systems, serving as a centralized registry that maintains metadata for all pages currently stored in the buffer pool. It maps logical page identifiers to physical buffer frame locations, tracks page states (clean/dirty, pinned/unpinned), records access patterns, and manages page replacement policies. This component enables efficient memory allocation, reduces disk I/O operations, and optimizes system performance by providing rapid access to frequently used data pages.

Working Principle

The Page Table operates on hash table or array-based indexing principles, where each entry corresponds to a page in the buffer pool. When a page request occurs, the Page Table quickly locates the page using its unique identifier. It implements algorithms like LRU (Least Recently Used) or Clock to track page usage and determine which pages to evict when the buffer pool is full. The table maintains synchronization through locking mechanisms to ensure data consistency in multi-threaded industrial environments.

Materials

Implemented as software/data structure in memory; hardware-accelerated versions may use SRAM or dedicated cache memory chips.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Entry Size	16-64 bytes per page
Concurrency	Supports multiple simultaneous accesses
Lookup Time	<1 microsecond
Max Entries	1000-1000000
Memory Footprint	Configurable based on buffer pool size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO/IEC 2382, ISO/IEC 9899, DIN 66253

Parent Products

This component is used in the following industrial products

Buffer Pool Manager

A software component within database systems that manages memory buffers for efficient data access.

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Engineering Analysis

Risks & Mitigation

Memory corruption
Concurrency conflicts
Algorithm inefficiency leading to thrashing
Data inconsistency during system failures

FMEA Triads

Trigger: Memory allocation errors
Failure: Page Table corruption leading to system crashes
Mitigation: Implement robust error handling and memory validation routines

Trigger: Inadequate synchronization mechanisms
Failure: Data races causing inconsistent page states
Mitigation: Use appropriate locking protocols and atomic operations

Trigger: Inefficient page replacement algorithm
Failure: Increased disk I/O and reduced system performance
Mitigation: Implement adaptive algorithms and regular performance monitoring

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Zero data corruption tolerance; <0.1% performance degradation under normal load

Test Method

Stress testing with varying workloads, concurrency testing, fault injection testing, and performance benchmarking against industry standards

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Page Table

Manufacturer profiles associated with Page Table.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the main function of the Page Table in industrial systems?