diff --git a/src/framework/core.c b/src/framework/core.c
index 2ccb9d4..097cb92 100644
--- a/src/framework/core.c
+++ b/src/framework/core.c
@@ -579,17 +579,6 @@ get_max_ele_idx_in_dbl_ary (double *array, int size)
 }
 
 
-/**
- * 默认上游源时不测速的，该函数改变该行为，测速上游源
- */
-void
-chsrc_set_measure_upstream (char *url)
-{
-  SpeedMeasureInfo_t *upsmi = &UpstreamProvider.smi;
-  upsmi->skip = NotSkip;
-  upsmi->url = url;
-}
-
 /**
  * @param      sources        所有待测源
  * @param      size           待测源的数量
diff --git a/src/recipe/os/APT/Ubuntu.c b/src/recipe/os/APT/Ubuntu.c
index cf8a242..c784dfb 100644
--- a/src/recipe/os/APT/Ubuntu.c
+++ b/src/recipe/os/APT/Ubuntu.c
@@ -9,11 +9,18 @@
  * Last Modified : <2024-11-22>
  * ------------------------------------------------------------*/
 
+static SourceProvider_t UpstreamUbuntu =
+{
+  "upstream", "archive.ubuntu.com", "上游默认源 archive.ubuntu.com", "http://archive.ubuntu.com/",
+  // https://github.com/RubyMetric/chsrc/issues/121
+  {NotSkip, NA, NA, "http://archive.ubuntu.com/ubuntu/dists/noble/Contents-amd64.gz"}
+};
+
 /**
  * @update 2024-11-21
  */
-static Source_t
-os_ubuntu_sources[] = {
+static Source_t os_ubuntu_sources[] =
+{
   {&UpstreamProvider, "http://archive.ubuntu.com/ubuntu/"}, //不支持https
   {&MirrorZ,          "https://mirrors.cernet.edu.cn/ubuntu/"},
   {&Ali,              "https://mirrors.aliyun.com/ubuntu"},
@@ -88,9 +95,6 @@ os_ubuntu_setsrc (char *option)
 {
   chsrc_ensure_root ();
 
-  // https://github.com/RubyMetric/chsrc/issues/121
-  chsrc_set_measure_upstream ("http://archive.ubuntu.com/ubuntu/dists/noble/Contents-amd64.gz");
-
   if (chsrc_check_file (OS_Ubuntu_SourceList_DEB822))
     {
       char *msg = CliOpt_InEnglish ? "Will change source based on new format"