LangChainMetriclangchain_chain_time
Duration of a LangChain chain executionDimensions:None
Available on:
OpenTelemetry (1)
OpenTelemetry (1)Interface Metrics (1)
Knowledge Base (1 documents, 0 chunks)
referenceTime to First Token (TTFT) in LLM Inference2183 wordsscore: 0.75This page provides a comprehensive technical reference on Time to First Token (TTFT) as a performance metric for LLM inference systems. It covers TTFT's definition, components (scheduling delay and prompt processing time), relationship to other metrics like TBT and TPOT, optimization strategies including dynamic token pruning and cache management, and advanced temporal analysis approaches like fluidity-index for better user experience assessment.
Related Insights (4)
Agent Infinite Loop Detectioncritical
Agents can enter infinite tool-calling loops when tool selection logic fails or tools return results that trigger repeated invocations, consuming tokens and delaying responses.
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LangSmith import optimization reduces initial import time overheadinfo
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OpenAI automatic server-side compaction now supportedinfo
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Anthropic cache_control now hoisted to tool_result levelwarning
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