diff --git a/source/tools/combine/ossre_client/ossre_set/ossre.py b/source/tools/combine/ossre_client/ossre_set/ossre.py
index 36ad4c13ea037cd902522d3af1f66e67f4e29ba2..feb60d208873191debf7e5eb5d39f5399dc0c082 100644
--- a/source/tools/combine/ossre_client/ossre_set/ossre.py
+++ b/source/tools/combine/ossre_client/ossre_set/ossre.py
@@ -687,7 +687,7 @@ def check_io_indicator(ret):
                     try:
                         tsar_path = get_tsar_path(cache_data)
                         if len(tsar_path) > 0:
-                            cmd = ('%s --io -I %s -i 1 -n 1 2>/dev/null'%(tsar_path,blk))
+                            cmd = ('%s --io -D -I %s -i 1 -n 1 2>/dev/null'%(tsar_path,blk))
                             io_stats = get_tsar_data(cache_data, cmd)
                             io_stats = io_stats.splitlines()
                             total_await = float(0.0)