From bb1af235ea2822d7a40f75ef52e4d6a2cde84da2 Mon Sep 17 00:00:00 2001
From: Charlie Marsh <charliemarsh@openai.com>
Date: Tue, 28 Jul 2026 14:29:15 +0000
Subject: [PATCH] Load thread titles concurrently during session startup
 (#35779)

## What changed

Run the thread-title lookup alongside instruction refresh and plugin and skill
warmup, avoiding an additional sequential wait during session initialization.

GitOrigin-RevId: 021f48abeac249c5d3fe526d026bf031acf1bed9
---
 codex-rs/core/src/session/session.rs | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/codex-rs/core/src/session/session.rs b/codex-rs/core/src/session/session.rs
index 92494f026d..1849c33bd4 100644
--- a/codex-rs/core/src/session/session.rs
+++ b/codex-rs/core/src/session/session.rs
@@ -954,9 +954,16 @@ impl Session {
                 "session_init.plugin_skill_warmup",
                 otel.name = "session_init.plugin_skill_warmup",
             ));
-            let ((), plugin_skill_errors) = tokio::join!(
+            let thread_name_lookup =
+                thread_title_from_thread_store(live_thread_init.as_ref(), &thread_store, thread_id)
+                    .instrument(info_span!(
+                        "session_init.thread_name_lookup",
+                        otel.name = "session_init.thread_name_lookup",
+                    ));
+            let ((), plugin_skill_errors, thread_name) = tokio::join!(
                 agents_md_manager.refresh(config.as_ref(), &resolved_environments),
                 plugin_skill_warmup,
+                thread_name_lookup,
             );
             for err in &plugin_skill_errors {
                 error!(
@@ -965,13 +972,6 @@ impl Session {
                     err.message
                 );
             }
-            let thread_name =
-                thread_title_from_thread_store(live_thread_init.as_ref(), &thread_store, thread_id)
-                    .instrument(info_span!(
-                        "session_init.thread_name_lookup",
-                        otel.name = "session_init.thread_name_lookup",
-                    ))
-                    .await;
             session_configuration.thread_name = thread_name.clone();
             validate_config_lock_if_configured(&session_configuration).await?;
             export_config_lock_if_configured(&session_configuration, thread_id).await?;