Proactive Memory Allocation for Database Systems
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Solution Overview
Problem
In computing systems, particularly in-memory database systems, low free memory can lead to performance bottlenecks as processes wait for memory allocation, causing delays and reduced responsiveness during insertion-intensive workloads.
Innovation Solution
Implementing proactive memory allocation, where a dedicated thread monitors the free memory pool and pre-allocates additional memory from the operating system when the pool falls below a threshold, ensuring a sufficient pool of free memory pages is maintained to avoid delays in memory allocation for other threads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If memory is allocated on-demand when free memory is low, then memory is used efficiently, but process performance degrades due to waiting for allocation
Solution Approach 1:
The patent implements proactive memory allocation where a dedicated thread monitors the free memory pool and pre-allocates additional memory from the operating system before the memory is actually needed by other threads. This preliminary action ensures that memory is available when needed without causing process delays, resolving the contradiction between efficient memory usage and maintained productivity.
2Reliability
If a dedicated thread monitors and manages memory allocation proactively, then memory availability is improved, but system complexity increases
Solution Approach 1:
The dedicated thread autonomously monitors the free memory pool, detects when memory falls below thresholds, and proactively allocates additional memory without requiring external intervention or complex coordination with other threads. This self-service approach improves memory availability while keeping the system relatively simple by avoiding complex inter-thread communication and synchronization mechanisms.
Data Source
AI summary
Technologies are described for performing proactive memory allocation (e.g., pre-allocation). Proactive memory allocation (e.g., proactive memory page allocation) can be provided for applications, such as database applications. For example, an application can be associated with a free memory pool (e.g., a free memory pool containing free memory pages). A dedicated thread of the application can monitor the free memory pool and perform proactive memory allocation when needed (e.g., when the amount of memory in the pool is low). For example, the dedicated thread can obtain new free memory from the operating system and add it to the pool.