From 8db7fc418681989e1b2ab7e8aa9fa51d63b76dfa Mon Sep 17 00:00:00 2001
From: Yi Zhang <1109276519@qq.com>
Date: Tue, 11 Nov 2025 16:35:38 +0800
Subject: [PATCH] disable overlap schedule if  mamba radix cache open (#13057)

---
 python/sglang/srt/server_args.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index 5b9a520b9..c7c91e1d5 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -1070,6 +1070,13 @@ class ServerArgs:
                 f"Disabling Radix Cache for {model_arch} as it is not yet supported."
             )
             self.disable_radix_cache = True
+        elif model_arch in ["Qwen3NextForCausalLM"]:
+            if not self.disable_radix_cache:
+                logger.warning(
+                    "Disabling overlap schedule since MambaRadixCache is not compatible with "
+                    "overlap schedule currently, try to use --disable-radix-cache if overlap schedule is necessary"
+                )
+                self.disable_overlap_schedule = True
 
         if is_deepseek_nsa(hf_config):
             if (