diff --git a/mysql-test/Makefile.am b/mysql-test/Makefile.am
index 60679e5b06d..5e3582d5e16 100644
--- a/mysql-test/Makefile.am
+++ b/mysql-test/Makefile.am
@@ -71,11 +71,11 @@ SUBDIRS =	lib/My/SafeProcess
 EXTRA_DIST =	README \
 		valgrind.supp \
 		$(test_SCRIPTS) \
-		$(nobase_test_DATA)
+		$(nobase_test_DATA) 
 
 # List of directories containing test + result files and the
 # related test data files that should be copied
-TEST_DIRS = t r include std_data std_data/parts \
+TEST_DIRS = t r include std_data std_data/parts collections \
 	std_data/ndb_backup50 std_data/ndb_backup51 \
 	std_data/ndb_backup51_data_be std_data/ndb_backup51_data_le \
 	std_data/funcs_1 \
diff --git a/mysql-test/collections/README b/mysql-test/collections/README
new file mode 100644
index 00000000000..9af84646a40
--- /dev/null
+++ b/mysql-test/collections/README
@@ -0,0 +1,30 @@
+This directory contains collections of test runs that we run during our
+integration and release testing. Each file contains zero or more lines,
+with one invocation of mysql-test-run.pl on each. These invocations are
+written so that, with the assumption that perl is in your search path,
+any collection can run as a shell script or a batch file, with the parent
+mysql-test directory being the current working directory.
+
+During integration testing, we choose the collection to run by following
+these steps:
+
+1) We choose the extension to look for, based on these rules:
+   - If we're running a per-push test, we choose ".push" as the extension.
+   - If we're running a daily test, we choose ".daily" as the extension.
+   - If we're running a weekly test, we choose ".weekly" as the extension.
+
+2) If there is a collection that has the same name as the branch we're
+   testing plus the extension as determined in step 1, we choose that
+   collection.
+
+3) If the branch is unknown or we have removed all characters from it
+   and still not found a matching collection, we choose the name "default"
+   plus the extension determined in step 1. If there is no such file,
+   we give up and don't test anything at all.
+
+4) If we haven't found a collection yet, we remove the last character from 
+   the branch name and go back to step 2.
+
+5) The commands from the collection are run line by line via execv() or
+   similar system calls. They are not run as a shell script. Shell 
+   expansions are not guaranteed to work and most likely won't.
diff --git a/mysql-test/collections/README.experimental b/mysql-test/collections/README.experimental
new file mode 100644
index 00000000000..9eee2394423
--- /dev/null
+++ b/mysql-test/collections/README.experimental
@@ -0,0 +1,25 @@
+The .experimental files in this directory contain names of test cases that
+are still in development and whose failures should be considered expected,
+instead of regressions.
+
+These files are to be used with the --experimental option of 
+mysql-test-run.pl. Please look at its help screen for usage information.
+
+The syntax is as follows:
+
+1) One line per test case.
+
+2) Empty lines and lines starting with a hash (#) are ignored.
+
+3) If any other line contains a blank followed by a hash (#), the hash 
+   and any subsequent characters are ignored.
+
+4) The full test case name including the suite and execution mode
+   must be specified, for example:
+        main.alias 'row'     # bug#00000
+
+5) As an exception to item 4, the last character of the test case
+   specification may be an asterisk (*). In that case, all test cases that
+   start with the same characters up to the last letter before the asterisk
+   are considered experimental:
+        main.a*  # get rid of main.alias, main.alibaba and main.agliolio
diff --git a/mysql-test/collections/default.daily b/mysql-test/collections/default.daily
new file mode 100644
index 00000000000..194cc2aad59
--- /dev/null
+++ b/mysql-test/collections/default.daily
@@ -0,0 +1 @@
+perl mysql-test-run.pl --timer --force --comment=rpl_ndb_row --suite=rpl_ndb,ndb --mysqld=--binlog-format=row --experimental=collections/default.experimental
diff --git a/mysql-test/collections/default.experimental b/mysql-test/collections/default.experimental
new file mode 100644
index 00000000000..103069f79cf
--- /dev/null
+++ b/mysql-test/collections/default.experimental
@@ -0,0 +1 @@
+funcs_1.charset_collation_1              # depends on compile-time decisions
diff --git a/mysql-test/collections/default.push b/mysql-test/collections/default.push
new file mode 100644
index 00000000000..0879b6fde2c
--- /dev/null
+++ b/mysql-test/collections/default.push
@@ -0,0 +1,5 @@
+perl mysql-test-run.pl --timer --force --comment=n_mix --mysqld=--binlog-format=mixed --experimental=collections/default.experimental
+perl mysql-test-run.pl --timer --force --comment=ps_row --ps-protocol --mysqld=--binlog-format=row --experimental=collections/default.experimental
+perl mysql-test-run.pl --timer --force --comment=embedded --embedded --experimental=collections/default.experimental
+perl mysql-test-run.pl --timer --force --comment=rpl_binlog_row --suite=rpl,binlog --mysqld=--binlog-format=row --experimental=collections/default.experimental
+perl mysql-test-run.pl --timer --force --comment=funcs_1 --suite=funcs_1 --experimental=collections/default.experimental
diff --git a/mysql-test/collections/default.weekly b/mysql-test/collections/default.weekly
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/mysql-test/include/check-warnings.test b/mysql-test/include/check-warnings.test
index 2144957f742..5295dd51a85 100644
--- a/mysql-test/include/check-warnings.test
+++ b/mysql-test/include/check-warnings.test
@@ -26,7 +26,7 @@ create temporary table error_log (
 ) engine=myisam;
 
 # Get the name of servers error log
-let $log_error= query_get_value(show variables like 'log_error', Value, 1);
+let $log_error= $MTR_LOG_ERROR;
 let $log_warning= $log_error.warnings;
 
 # Try tload the warnings into a temporary table,
diff --git a/mysql-test/lib/My/ConfigFactory.pm b/mysql-test/lib/My/ConfigFactory.pm
index 567a05ac7a1..852f706c858 100644
--- a/mysql-test/lib/My/ConfigFactory.pm
+++ b/mysql-test/lib/My/ConfigFactory.pm
@@ -116,8 +116,8 @@ sub fix_tmpdir {
 
 sub fix_log_error {
   my ($self, $config, $group_name, $group)= @_;
-  my $dir= dirname($group->value('datadir'));
-  return "$dir/mysqld.err";
+  my $dir= $self->{ARGS}->{vardir};
+  return "$dir/log/$group_name.err";
 }
 
 sub fix_log {
@@ -203,7 +203,7 @@ my @mysqld_rules=
  { '#host' => \&fix_host },
  { 'port' => \&fix_port },
  { 'socket' => \&fix_socket },
- { 'log-error' => \&fix_log_error },
+ { '#log-error' => \&fix_log_error },
  { 'log' => \&fix_log },
  { 'log-slow-queries' => \&fix_log_slow_queries },
  { '#user' => sub { return shift->{ARGS}->{user} || ""; } },
@@ -389,7 +389,7 @@ sub post_check_embedded_group {
 
   my @no_copy =
     (
-     'log-error', # Embedded server writes stderr to mysqltest's log file
+     '#log-error', # Embedded server writes stderr to mysqltest's log file
      'slave-net-timeout', # Embedded server are not build with replication
     );
 
diff --git a/mysql-test/lib/My/Platform.pm b/mysql-test/lib/My/Platform.pm
index 3dd5c552b10..69ffdfbb4ce 100644
--- a/mysql-test/lib/My/Platform.pm
+++ b/mysql-test/lib/My/Platform.pm
@@ -113,8 +113,8 @@ sub check_socket_path_length {
 
   # Create a tempfile name with same length as "path"
   my $tmpdir = tempdir( CLEANUP => 0);
-  my $len = length($path) - length($tmpdir);
-  my $testfile = $tmpdir . "x" x ($len  > 0 ? $len : 1);
+  my $len = length($path) - length($tmpdir) - 1;
+  my $testfile = $tmpdir . "/" . "x" x ($len  > 0 ? $len : 1);
   my $sock;
   eval {
     $sock= new IO::Socket::UNIX
@@ -126,17 +126,15 @@ sub check_socket_path_length {
     die "Could not create UNIX domain socket: $!"
       unless defined $sock;
 
-    die "UNIX domain socket patch was truncated"
+    die "UNIX domain socket path was truncated"
       unless ($testfile eq $sock->hostpath());
 
     $truncated= 0; # Yes, it worked!
 
   };
-  #print "check_socket_path_length, failed: ", $@, '\n' if ($@);
 
   $sock= undef;  # Close socket
-  unlink($testfile); # Remove the physical file
-  rmdir($tmpdir); # Remove the tempdir
+  rmtree($tmpdir); # Remove the tempdir and any socket file created
   return $truncated;
 }
 
diff --git a/mysql-test/lib/My/SafeProcess.pm b/mysql-test/lib/My/SafeProcess.pm
index 0e3aa968052..5ef3286ad8e 100644
--- a/mysql-test/lib/My/SafeProcess.pm
+++ b/mysql-test/lib/My/SafeProcess.pm
@@ -117,6 +117,7 @@ sub new {
   my $output   = delete($opts{'output'});
   my $error    = delete($opts{'error'});
   my $verbose  = delete($opts{'verbose'});
+  my $nocore   = delete($opts{'nocore'});
   my $host     = delete($opts{'host'});
   my $shutdown = delete($opts{'shutdown'});
   my $user_data= delete($opts{'user_data'});
@@ -137,6 +138,7 @@ sub new {
   push(@safe_args, $safe_script) if defined $safe_script;
 
   push(@safe_args, "--verbose") if $verbose > 0;
+  push(@safe_args, "--nocore") if $nocore;
 
   # Point the safe_process at the right parent if running on cygwin
   push(@safe_args, "--parent-pid=".Cygwin::pid_to_winpid($$)) if IS_CYGWIN;
diff --git a/mysql-test/lib/My/SafeProcess/safe_process.cc b/mysql-test/lib/My/SafeProcess/safe_process.cc
index 7932f3fd2d6..6ad45a3226e 100644
--- a/mysql-test/lib/My/SafeProcess/safe_process.cc
+++ b/mysql-test/lib/My/SafeProcess/safe_process.cc
@@ -45,6 +45,7 @@
 
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <sys/resource.h>
 #include <unistd.h>
 #include <stdarg.h>
 #include <stdio.h>
@@ -149,7 +150,8 @@ int main(int argc, char* const argv[] )
   char* const* child_argv= 0;
   pid_t own_pid= getpid();
   pid_t parent_pid= getppid();
-
+  bool nocore = false;
+  
   /* Install signal handlers */
   signal(SIGTERM, handle_signal);
   signal(SIGINT,  handle_signal);
@@ -181,6 +183,9 @@ int main(int argc, char* const argv[] )
         start++; /* Step past = */
         if ((parent_pid= atoi(start)) == 0)
           die("Invalid value '%s' passed to --parent-id", start);
+      } else if ( strcmp(arg, "--nocore") == 0 )
+      {
+        nocore = true;	// Don't allow the process to dump core
       }
       else
         die("Unknown option: %s", arg);
@@ -218,6 +223,15 @@ int main(int argc, char* const argv[] )
     // it and any childs(that hasn't changed group themself)
     setpgid(0, 0);
 
+    if (nocore)
+    {
+      struct rlimit corelim = { 0, 0 };
+      if (setrlimit (RLIMIT_CORE, &corelim) < 0)
+      {
+        message("setrlimit failed, errno=%d", errno);
+      }
+    }
+    
     // Signal that child is ready
     buf= 37;
     write(pfd[1], &buf, 1);
diff --git a/mysql-test/lib/mtr_report.pm b/mysql-test/lib/mtr_report.pm
index ce3fba87385..9c6ab35ee5e 100644
--- a/mysql-test/lib/mtr_report.pm
+++ b/mysql-test/lib/mtr_report.pm
@@ -69,6 +69,8 @@ sub _mtr_report_test_name ($) {
 
   print _name(), _timestamp();
   printf "%-40s ", $tname;
+
+  return $tname;
 }
 
 
@@ -105,20 +107,48 @@ sub mtr_report_test_passed ($) {
 
 sub mtr_report_test ($) {
   my ($tinfo)= @_;
-  _mtr_report_test_name($tinfo);
+  my $test_name = _mtr_report_test_name($tinfo);
 
   my $comment=  $tinfo->{'comment'};
   my $logfile=  $tinfo->{'logfile'};
   my $warnings= $tinfo->{'warnings'};
   my $result=   $tinfo->{'result'};
+  my $retry=    $tinfo->{'retries'} ? "retry-" : "";
 
   if ($result eq 'MTR_RES_FAILED'){
 
     my $timest = format_time();
+    my $fail = "fail";
+
+    if ( $::opt_experimental )
+    {
+      # Find out if this test case is an experimental one, so we can treat
+      # the failure as an expected failure instead of a regression.
+      for my $exp ( @$::experimental_test_cases ) {
+        if ( $exp ne $test_name ) {
+          # if the expression is not the name of this test case, but has
+          # an asterisk at the end, determine if the characters up to
+          # but excluding the asterisk are the same
+          if ( $exp ne "" && substr($exp, -1, 1) eq "*" ) {
+            $exp = substr($exp, 0, length($exp) - 1);
+            if ( substr($test_name, 0, length($exp)) ne $exp ) {
+              # no match, try next entry
+              next;
+            }
+            # if yes, fall through to set the exp-fail status
+          } else {
+            # no match, try next entry
+            next;
+          }
+        }
+        $fail = "exp-fail";
+        last;
+      }
+    }
 
     if ( $warnings )
     {
-      mtr_report("[ fail ]  Found warnings/errors in server log file!");
+      mtr_report("[ $retry$fail ]  Found warnings/errors in server log file!");
       mtr_report("        Test ended at $timest");
       mtr_report($warnings);
       return;
@@ -126,14 +156,14 @@ sub mtr_report_test ($) {
     my $timeout= $tinfo->{'timeout'};
     if ( $timeout )
     {
-      mtr_report("[ fail ]  timeout after $timeout seconds");
+      mtr_report("[ $retry$fail ]  timeout after $timeout seconds");
       mtr_report("        Test ended at $timest");
       mtr_report("\n$tinfo->{'comment'}");
       return;
     }
     else
     {
-      mtr_report("[ fail ]\n        Test ended at $timest");
+      mtr_report("[ $retry$fail ]\n        Test ended at $timest");
     }
 
     if ( $logfile )
@@ -176,7 +206,7 @@ sub mtr_report_test ($) {
   {
     my $timer_str= $tinfo->{timer} || "";
     $tot_real_time += ($timer_str/1000);
-    mtr_report("[ pass ] ", sprintf("%5s", $timer_str));
+    mtr_report("[ ${retry}pass ] ", sprintf("%5s", $timer_str));
 
     # Show any problems check-testcase found
     if ( defined $tinfo->{'check'} )
diff --git a/mysql-test/lib/mtr_unique.pm b/mysql-test/lib/mtr_unique.pm
index 2ac172883a2..294a5d7b4d6 100644
--- a/mysql-test/lib/mtr_unique.pm
+++ b/mysql-test/lib/mtr_unique.pm
@@ -188,6 +188,8 @@ sub mtr_release_unique_id($) {
 
   flock SEM, LOCK_UN or warn "can't unlock $file.sem";
   close SEM;
+
+  delete $mtr_unique_ids{$$};
 }
 
 
diff --git a/mysql-test/mysql-test-run.pl b/mysql-test/mysql-test-run.pl
index 89eed6a1736..47498026e72 100755
--- a/mysql-test/mysql-test-run.pl
+++ b/mysql-test/mysql-test-run.pl
@@ -180,12 +180,18 @@ our $opt_client_debugger;
 my $config; # The currently running config
 my $current_config_name; # The currently running config file template
 
+our $opt_experimental;
+our $experimental_test_cases;
+
 my $baseport;
 my $opt_build_thread= $ENV{'MTR_BUILD_THREAD'} || "auto";
+my $build_thread= 0;
 
 my $opt_record;
 my $opt_report_features;
 
+my $opt_skip_core;
+
 our $opt_check_testcases= 1;
 my $opt_mark_progress;
 
@@ -676,14 +682,9 @@ sub run_worker ($) {
   report_option('name',"worker[$thread_num]");
 
   # --------------------------------------------------------------------------
-  # Use auto build thread in all but first worker
+  # Set different ports per thread
   # --------------------------------------------------------------------------
-  set_build_thread_ports($thread_num > 1 ? 'auto' : $opt_build_thread);
-
-  if (check_ports_free()){
-    # Some port was not free(which one has already been printed)
-    mtr_error("Some port(s) was not free")
-  }
+  set_build_thread_ports($thread_num);
 
   # --------------------------------------------------------------------------
   # Turn off verbosity in workers, unless explicitly specified
@@ -803,7 +804,7 @@ sub command_line_setup {
              'big-test'                 => \$opt_big_test,
 	     'combination=s'            => \@opt_combinations,
              'skip-combinations'        => \&collect_option,
-
+             'experimental=s'           => \$opt_experimental,
 	     'skip-im'                  => \&ignore_option,
 
              # Specify ports
@@ -943,12 +944,12 @@ sub command_line_setup {
   }
 
   # Look for language files and charsetsdir, use same share
-  my $path_share=      mtr_path_exists("$basedir/share/mysql",
-				       "$basedir/sql/share",
-				       "$basedir/share");
+  $path_language=   mtr_path_exists("$basedir/share/mysql/english",
+                                    "$basedir/sql/share/english",
+                                    "$basedir/share/english");
 
-  
-  $path_language=      mtr_path_exists("$path_share/english");
+
+  my $path_share= dirname($path_language);
   $path_charsetsdir=   mtr_path_exists("$path_share/charsets");
 
   if (using_extern())
@@ -970,6 +971,33 @@ sub command_line_setup {
     mtr_print_thick_line('#');
   }
 
+  if ( $opt_experimental )
+  {
+    # read the list of experimental test cases from the file specified on
+    # the command line
+    open(FILE, "<", $opt_experimental) or mtr_error("Can't read experimental file: $opt_experimental");
+    mtr_report("Using experimental file: $opt_experimental");
+    $experimental_test_cases = [];
+    while(<FILE>) {
+      chomp;
+      # remove comments (# foo) at the beginning of the line, or after a 
+      # blank at the end of the line
+      s/( +|^)#.*$//;
+      # remove whitespace
+      s/^ +//;              
+      s/ +$//;
+      # if nothing left, don't need to remember this line
+      if ( $_ eq "" ) {
+        next;
+      }
+      # remember what is left as the name of another test case that should be
+      # treated as experimental
+      print " - $_\n";
+      push @$experimental_test_cases, $_;
+    }
+    close FILE;
+  }
+
   foreach my $arg ( @ARGV )
   {
     if ( $arg =~ /^--skip-/ )
@@ -1093,6 +1121,14 @@ sub command_line_setup {
     $opt_shutdown_timeout= 0; # Kill processes instead of nice shutdown
   }
 
+  # --------------------------------------------------------------------------
+  # Check parallel value
+  # --------------------------------------------------------------------------
+  if ($opt_parallel < 1)
+  {
+    mtr_error("0 or negative parallel value makes no sense, use positive number");
+  }
+
   # --------------------------------------------------------------------------
   # Record flag
   # --------------------------------------------------------------------------
@@ -1282,18 +1318,32 @@ sub command_line_setup {
 # But a fairly safe range seems to be 5001 - 32767
 #
 sub set_build_thread_ports($) {
-  my $build_thread= shift || 0;
+  my $thread= shift || 0;
 
-  if ( lc($build_thread) eq 'auto' ) {
-    #mtr_report("Requesting build thread... ");
-    $build_thread= mtr_get_unique_id(250, 299);
-    if ( !defined $build_thread ) {
-      mtr_error("Could not get a unique build thread id");
+  if ( lc($opt_build_thread) eq 'auto' ) {
+    my $found_free = 0;
+    $build_thread = 250;	# Start attempts from here
+    while (! $found_free)
+    {
+      $build_thread= mtr_get_unique_id($build_thread, 299);
+      if ( !defined $build_thread ) {
+	mtr_error("Could not get a unique build thread id");
+      }
+      $found_free= check_ports_free($build_thread);
+      # If not free, release and try from next number
+      mtr_release_unique_id($build_thread++) unless $found_free;
     }
-    #mtr_report(" - got $build_thread");
+  }
+  else
+  {
+    $build_thread = $opt_build_thread + $thread - 1;
   }
   $ENV{MTR_BUILD_THREAD}= $build_thread;
-  $opt_build_thread= $build_thread;
+
+  if (! check_ports_free($build_thread)) {
+    # Some port was not free(which one has already been printed)
+    mtr_error("Some port(s) was not free")
+  }
 
   # Calculate baseport
   $baseport= $build_thread * 10 + 10000;
@@ -2447,22 +2497,18 @@ sub kill_leftovers ($) {
 # Check that all the ports that are going to
 # be used are free
 #
-sub check_ports_free
+sub check_ports_free ($)
 {
-  my @ports_to_check;
-  for ($baseport..$baseport+9){
-    push(@ports_to_check, $_);
-  }
-  #mtr_report("Checking ports...");
-  # print "@ports_to_check\n";
-  foreach my $port (@ports_to_check){
-    if (mtr_ping_port($port)){
-      mtr_report(" - 'localhost:$port' was not free");
-      return 1; # One port was not free
+  my $bthread= shift;
+  my $portbase = $bthread * 10 + 10000;
+  for ($portbase..$portbase+9){
+    if (mtr_ping_port($_)){
+      mtr_report(" - 'localhost:$_' was not free");
+      return 0; # One port was not free
     }
   }
 
-  return 0; # All ports free
+  return 1; # All ports free
 }
 
 
@@ -3484,7 +3530,10 @@ sub start_check_warnings ($$) {
 
   my $name= "warnings-".$mysqld->name();
 
-  extract_warning_lines($mysqld->value('log-error'));
+  my $log_error= $mysqld->value('#log-error');
+  # To be communicated to the test
+  $ENV{MTR_LOG_ERROR}= $log_error;
+  extract_warning_lines($log_error);
 
   my $args;
   mtr_init_args(\$args);
@@ -3961,6 +4010,7 @@ sub mysqld_arguments ($$$) {
       mtr_add_arg($args, "%s", $arg);
     }
   }
+  $opt_skip_core = $found_skip_core;
   if ( !$found_skip_core )
   {
     mtr_add_arg($args, "%s", "--core-file");
@@ -4000,6 +4050,12 @@ sub mysqld_start ($$) {
 		$path_vardir_trace, $mysqld->name());
   }
 
+  if (IS_WINDOWS)
+  {
+    # Trick the server to send output to stderr, with --console
+    mtr_add_arg($args, "--console");
+  }
+
   if ( $opt_gdb || $opt_manual_gdb )
   {
     gdb_arguments(\$args, \$exe, $mysqld->name());
@@ -4032,7 +4088,7 @@ sub mysqld_start ($$) {
   # Remove the old pidfile if any
   unlink($mysqld->value('pid-file'));
 
-  my $output= $mysqld->value('log-error');
+  my $output= $mysqld->value('#log-error');
   if ( $opt_valgrind and $opt_debug )
   {
     # When both --valgrind and --debug is selected, send
@@ -4052,6 +4108,7 @@ sub mysqld_start ($$) {
        error         => $output,
        append        => 1,
        verbose       => $opt_verbose,
+       nocore        => $opt_skip_core,
        host          => undef,
        shutdown      => sub { mysqld_stop($mysqld) },
       );
@@ -4104,12 +4161,6 @@ sub server_need_restart {
     return 0;
   }
 
-  if ( $opt_embedded_server )
-  {
-    mtr_verbose_restart($server, "no start or restart for embedded server");
-    return 0;
-  }
-
   if ( $tinfo->{'force_restart'} ) {
     mtr_verbose_restart($server, "forced in .opt file");
     return 1;
@@ -4339,7 +4390,7 @@ sub start_servers($) {
       # Already started
 
       # Write start of testcase to log file
-      mark_log($mysqld->value('log-error'), $tinfo);
+      mark_log($mysqld->value('#log-error'), $tinfo);
 
       next;
     }
@@ -4398,7 +4449,7 @@ sub start_servers($) {
     mkpath($tmpdir) unless -d $tmpdir;
 
     # Write start of testcase to log file
-    mark_log($mysqld->value('log-error'), $tinfo);
+    mark_log($mysqld->value('#log-error'), $tinfo);
 
     # Run <tname>-master.sh
     if ($mysqld->option('#!run-master-sh') and
@@ -4449,7 +4500,7 @@ sub start_servers($) {
       $tinfo->{comment}=
 	"Failed to start ".$mysqld->name();
 
-      my $logfile= $mysqld->value('log-error');
+      my $logfile= $mysqld->value('#log-error');
       if ( defined $logfile and -f $logfile )
       {
 	$tinfo->{logfile}= mtr_fromfile($logfile);