diff --git a/xCAT-server/sbin/xcatd b/xCAT-server/sbin/xcatd
index b60fd41d5..d1e4ec59f 100755
--- a/xCAT-server/sbin/xcatd
+++ b/xCAT-server/sbin/xcatd
@@ -28,7 +28,7 @@ use Fcntl ":flock";
 use xCAT::Client qw(submit_request);
 my $clientselect = new IO::Select;
 my $sslclients = 0; #THROTTLE
-my $maxsslclients = 512; #default
+my $maxsslclients = 64; #default
 
 sub xexit {
    while (wait() > 0) {