LaurieWired/tailslayer

Health v2 · maintenance only

Flags: no_releases young

Adoption not part of the score

2817 stars · 162 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Tailslayer is a C++ header-only library that reduces tail latency in RAM reads caused by DRAM refresh stalls. It replicates data across independent DRAM channels with uncorrelated refresh schedules and issues hedged reads, using whichever replica responds first.

Use cases

• reduce tail latency of memory reads
• hide DRAM refresh stalls in low-latency systems
• hedge reads across DRAM channels
• build low-latency trading or HPC hot paths
• replicate hot data across memory channels

When to choose

• you need to shave microseconds off p99 memory read latency
• you run on AMD, Intel, or Graviton hardware and can pin to cores
• your workload is dominated by DRAM refresh stalls on a small hot dataset

When to avoid

• your dataset is too large to replicate across channels
• you need portability across arbitrary memory configurations
• you want a mature, widely production-tested solution

Facets

library · maturity experimental

concurrency developer-tools performance hardware developer-tools cpp cross-platform tail-latency dram-refresh hedged-reads low-latency memory performance linux

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