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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.00208 |
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Table of Contents:
- A significant impediment to high performance in key-value stores is the high cost of thread switching or stalls. While there are many sources for this, a major one is the contention for resources. And this cost increases with load as conflicting operations more frequently try to access data concurrently. Traditional latch-based approaches usually handle these situations by blocking one or more contending threads. Latch-free techniques can avoid this behavior. But the payoff may be limited if latch-free techniques require executing wasted work. In this paper, we show how latch-free techniques exploit delta record updating and can significantly reduce wasted work by using notices, a new latch-free approach. This paper explains how notices work and can solve B-tree index maintenance problems, while avoiding thread switches or stalls. Other opportunities for avoiding thread switches or stalls are also discussed.