diff -uprN '--exclude-from=exclude.txt' mysql-8.0.3-rc/storage/perfschema/pfs_instr.cc mysql-8.0.3-rc/storage/perfschema/pfs_instr.cc
--- mysql-8.0.3-rc/storage/perfschema/pfs_instr.cc	2017-09-19 19:33:50.000000000 +0800
+++ mysql-8.0.3-rc/storage/perfschema/pfs_instr.cc	2020-05-18 11:49:09.439588487 +0800
@@ -702,6 +702,7 @@ find_thread(ulonglong thread_id)
 
   do
   {
+    sleep(1);
     pfs = it.scan_next(&index);
     if (pfs != NULL)
     {