Buffer Pool Manager

Product Specifications

Technical details and manufacturing context for Buffer Pool Manager

Definition

The Buffer Pool Manager is a software component used in database systems to manage the buffer pool, a dedicated memory area that caches frequently accessed data pages from disk. Its primary function is to reduce disk I/O operations by serving data requests from memory whenever possible, thereby improving overall database performance. The component employs intelligent caching algorithms, page replacement policies, and concurrency control mechanisms to optimize memory usage and ensure data consistency. It is part of the Index Storage Engine and is critical for high-throughput transaction processing and analytical workloads. The buffer pool size typically ranges from 64 to 1024 MB, with page sizes from 4 to 64 KB. The component supports sustained throughput of 100–500 K IOPS, with average latency between 0.1 and 1.0 ms. Cache hit ratios are typically 90–99%, and concurrency is supported for 16–128 threads. Memory bandwidth ranges from 10 to 50 GB/s, and power consumption under full load is 5–20 W. The operating temperature range is 0–70 °C, with non-condensing relative humidity of 10–90% RH. The mean time between failures (MTBF) is 50,000–200,000 hours, and the physical footprint on a circuit board is 100–500 cm². These values are reference ranges and must be verified for the specific model and application. The component is delivered as software code, and no external standards are listed. For procurement, confirm model-specific parameters and compliance with the legal manufacturer or supplier.

Working Principle

The Buffer Pool Manager maintains a pool of memory buffers that store copies of database pages. When a page is requested, it first checks the buffer pool. If present (cache hit), it returns the page from memory. If not (cache miss), it reads from disk, stores it in the buffer pool using replacement algorithms like LRU or Clock, and manages dirty page write-back to disk. It handles page locking and pinning for transactions, ensuring data consistency. The component optimizes performance by balancing memory usage and disk I/O.

Common Materials

Software Code

Technical Parameters

Parameter	Typical range	Notes & selection driver
Buffer Pool Size	64–1024 MB	Determines memory footprint and cache capacity.
Page Size	4–64 KB	Affects I/O efficiency and memory overhead.
Throughput	100–500 K IOPS	Sustained read/write operations per second.
Latency	0.1–1.0 ms	Average time to access a page in the pool.
Cache Hit Ratio	90–99 %	Percentage of requests served from buffer.
Concurrency	16–128 threads	Number of concurrent access threads supported.
Memory Bandwidth	10–50 GB/s	Data transfer rate between buffer and CPU.
Power Consumption	5–20 W	Typical power draw under full load.
Operating Temperature	0–70 °C	Ambient temperature range for reliable operation.
Humidity	10–90 % RH	Non-condensing relative humidity range.
MTBF	50000–200000 hours	Mean time between failures for the component.
Footprint	100–500 cm²	Physical area required on the circuit board.

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

Components / BOM

Page Table Part
Maps page identifiers to buffer pool locations

Material: Data Structure
Free List Part
Tracks available buffer frames

Material: Data Structure
Dirty Page List Part
Tracks modified pages needing write-back

Material: Data Structure
LRU Chain Part
Implements Least Recently Used page ordering

Material: Data Structure
Memory Buffers
The pool of frames that actually hold the cached database pages.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Index Storage Engine

View system integration details

Manufacturers of Buffer Pool Manager

Manufacturer profiles associated with Buffer Pool Manager.

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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 · Page last updated 6 September 2026

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Frequently Asked Questions

What is the primary function of the Buffer Pool Manager?

It manages the buffer pool, a memory area that caches database pages to reduce disk I/O and improve data access speed.

What are typical buffer pool sizes?

The buffer pool size typically ranges from 64 to 1024 MB, depending on the system configuration and workload.

How does the Buffer Pool Manager handle cache misses?

On a cache miss, it reads the page from disk, stores it in the buffer pool using a replacement algorithm like LRU or Clock, and may write back dirty pages.

What parameters should be verified before deployment?

Verify buffer pool size, page size, throughput, latency, cache hit ratio, concurrency, memory bandwidth, power consumption, operating temperature, humidity, MTBF, and footprint with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (software component)
other spec:	Memory capacity: 1GB to 1TB+, I/O throughput: 100MB/s to 10GB/s+
temperature:	Ambient to 70°C (typical server operating range)

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards