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arxiv 2402.06262 v2 pith:B3GAJMC5 submitted 2024-02-09 cs.CL cs.AI

On the Efficacy of Eviction Policy for Key-Value Constrained Generative Language Model Inference

classification cs.CL cs.AI
keywords evictionkey-valuecachepoliciesconstrainedeasykvefficacygenerative
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Despite the recent success associated with Large Language Models (LLMs), they are notably cost-prohibitive to deploy in resource-constrained environments due to their excessive memory and computational demands. In addition to model parameters, the key-value cache is also stored in GPU memory, growing linearly with batch size and sequence length. As a remedy, recent works have proposed various eviction policies for maintaining the overhead of key-value cache under a given budget. This paper embarks on the efficacy of existing eviction policies in terms of importance score calculation and eviction scope construction. We identify the deficiency of prior policies in these two aspects and introduce RoCo, a robust cache omission policy based on temporal attention scores and robustness measures. Extensive experimentation spanning prefilling and auto-regressive decoding stages validates the superiority of RoCo. Finally, we release EasyKV, a versatile software package dedicated to user-friendly key-value constrained generative inference. Code available at https://github.com/DRSY/EasyKV.

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Forward citations

Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. HACK++: Towards More Effective Head-Aware Key-Value Compression for Efficient Visual Autoregressive Modeling

    cs.CV 2026-06 unverdicted novelty 7.0

    HACK++ is a head-aware KV cache compression framework for VAR models that decouples current-scale attention from historical cache under adaptive per-head budgets to achieve near-lossless generation at 30% attention an...

  2. Meta-Soft: Leveraging Composable Meta-Tokens for Context-Preserving KV Cache Compression

    cs.AI 2026-05 unverdicted novelty 6.0

    Meta-Soft dynamically synthesizes targeted soft tokens from a learnable orthogonal meta-library via Gumbel-Softmax selection and uses attention-flow integration to preserve semantic information during KV cache eviction.

  3. Ada-KV: Optimizing KV Cache Eviction by Adaptive Budget Allocation for Efficient LLM Inference

    cs.CL 2024-07 accept novelty 6.0

    Ada-KV is the first head-wise adaptive KV cache budget allocator for LLMs, using a theoretical loss upper bound to allocate eviction differently per attention head and yielding higher quality than uniform methods on l...

  4. Coverage-Driven KV Cache Eviction for Efficient and Improved Inference of LLM

    cs.CL 2026-06 unverdicted novelty 5.0

    K-VEC is a coverage-aware KV-cache eviction strategy using cross-head and cross-layer modules that improves performance by up to 10.35 points over prior methods on LongBench subsets at fixed memory budget.

  5. GRKV: Global Regression for Training-Free KV Cache Compression in Long-Context LLMs

    cs.CL 2026-05 unverdicted novelty 5.0

    GRKV applies global ridge regression to KV cache merging for span-based retention in long-context LLMs, claiming to be the only method that improves benchmark performance with minimal overhead.

  6. Towards Efficient Large Language Model Serving: A Survey on System-Aware KV Cache Optimization

    cs.LG 2026-07 accept novelty 4.0

    A survey organizing serving-time KV cache optimization techniques into temporal, spatial, and structural system behaviors, analyzing cross-behavior co-design patterns and open challenges.

  7. Meta-Soft: Leveraging Composable Meta-Tokens for Context-Preserving KV Cache Compression

    cs.AI 2026-05 unverdicted novelty 4.0

    Meta-Soft dynamically synthesizes targeted soft tokens from a learnable meta-library using Gumbel-Softmax and applies attention-flow integration to compress KV cache while attempting to preserve evicted context information.