Unverified50% confidenceFactExact time
KV缓存的大小随上下文长度线性增长，处理更长文本时显存消耗会显著增加
1
Sources
50%
Confidence
Long-term
Relevance
8/26/2026
First Seen
Sources
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VerifiedKV缓存将已计算的Key-Value矩阵存储在显存中实现增量计算，代价是显存占用随序列长度线性增长80% similarUnverifiedKV缓存随上下文长度增加，显存占用可达总显存的60%以上77% similarVerifiedKV Cache占用的显存随序列长度线性增长77% similarUnverifiedKV缓存的大小与上下文长度线性增长，Qwen 2.5 32B 在64K上下文下的KV缓存可能额外占用数GB内存75% similarUnverifiedKV缓存的显存占用与上下文长度、模型层数和注意力头数成正比，8K上下文下一个典型27B模型可能额外消耗2～4GB显存74% similar
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