Fix to reduce newfstatat to "/etc/localtime" calls

stats-lib-funcs.pl

@@ -15,7 +15,7 @@
 }
 
 # Import global variables
-our ($config_directory, $var_directory, $current_theme);
+our ($config_directory, $var_directory, $current_theme, $time);
 
 # Load theme language and settings
 our %text = load_language($current_theme);
@@ -62,7 +62,6 @@ sub jsonify
 
 sub get_stats_empty
 {
-    my $time = time();
     return {
         graphs =>
             { cpu =>  [{x => $time, y => 0}],
@@ -80,7 +79,6 @@ sub get_stats_now
     my %data;
     my $graphs = {};
     my $gadd = sub {
-        my $time = time();
         my ($k, $d) = @_;
         $graphs->{$k} = [] if (ref($graphs->{$k}) ne 'ARRAY');
         push(@{$graphs->{$k}}, {x => $time, y => $d});
@@ -226,7 +224,6 @@ sub get_stats_history
 sub trim_stats_history
 {
     my ($graphs) = @_;
-    my $time = time();
     my $get_default_graph = sub {
         my ($key, $time) = @_;
         my $default = get_stats_empty();

stats.pl

@@ -11,7 +11,7 @@
 use Net::WebSocket::Server;
 use utf8;
 
-our ($current_theme, $json);
+our ($current_theme, $json, $time);
 require($ENV{'THEME_ROOT'} . "/stats-lib.pl");
 
 # Get port number
@@ -38,12 +38,17 @@
 # Current stats within a period
 my $stats_period;
 
+# Register start time and update it on each tick
+$time = time();
+
 # Start WebSocket server
 Net::WebSocket::Server->new(
     listen     => $port,
     tick_period => 1,
     on_tick => sub {
         my ($serv) = @_;
+        # Update time
+        $time += 1; 
         # If asked to stop running, then shut down the server
         if ($serv->{'disable'}) {
             $serv->shutdown();
@@ -110,6 +115,15 @@
         if ($serv->{'ticked'}++ % 20 == 0) {
             save_stats_history($stats_period);
             undef($stats_period);
+            undef(%main::read_file_cache);
+            undef(%main::read_file_missing);
+            undef(%main::acl_hash_cache);
+            undef(%main::acl_array_cache);
+            undef(%main::has_command_cache);
+            undef(@main::list_languages_cache);
+            undef($main::got_list_usermods_cache);
+            undef(@main::list_usermods_cache);
+            undef(%main::foreign_installed_cache);
         }
         # If interval is set then sleep minus one
         # second becase tick_period is one second