57 lines
1.4 KiB
Rust
57 lines
1.4 KiB
Rust
//! Per-turn prompt latency measurement.
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//!
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//! Extracted from `xai-grok-shell::session::prompt_timing`.
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use std::time::Instant;
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use crate::events::PromptLatency;
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use crate::session_ctx::log_event;
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pub use crate::enums::McpInitStrategy;
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pub struct PromptTiming {
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turn_start: Instant,
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mcp_wait_ms: u64,
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tool_collection_ms: u64,
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}
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impl PromptTiming {
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pub fn start() -> Self {
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Self {
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turn_start: Instant::now(),
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mcp_wait_ms: 0,
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tool_collection_ms: 0,
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}
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}
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pub fn record_tool_prep(&mut self, mcp_wait_ms: u64, total_prep_ms: u64) {
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self.mcp_wait_ms = mcp_wait_ms;
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self.tool_collection_ms = total_prep_ms.saturating_sub(mcp_wait_ms);
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}
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pub fn emit(
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self,
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model_call_ms: u64,
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turn_index: u32,
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mcp_server_count: u32,
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mcp_tools_registered: u32,
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mcp_strategy: McpInitStrategy,
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model_id: String,
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) {
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let total_ms = self.turn_start.elapsed().as_millis() as u64;
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let pre_model_ms = total_ms.saturating_sub(model_call_ms);
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log_event(PromptLatency {
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turn_index,
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total_ms,
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mcp_wait_ms: self.mcp_wait_ms,
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tool_collection_ms: self.tool_collection_ms,
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model_call_ms,
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pre_model_ms,
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mcp_server_count,
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mcp_tools_registered,
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mcp_strategy,
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model_id,
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});
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}
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}
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