diff --git a/xCAT-server/lib/perl/xCAT/PPC.pm b/xCAT-server/lib/perl/xCAT/PPC.pm
index 0aa34eb58..f09938146 100644
--- a/xCAT-server/lib/perl/xCAT/PPC.pm
+++ b/xCAT-server/lib/perl/xCAT/PPC.pm
@@ -391,6 +391,7 @@ sub process_command {
             }
             $hw = @$_[0];
 
+            Time::HiRes::sleep(0.2);
             my ($pipe) = fork_cmd( @$_[0], @$_[1], $request );
             if ( $pipe ) {
                 $fds->add( $pipe );