Merge lp:~sergei.glushchenko/percona-xtrabackup/xb20-bug1095551 into lp:percona-xtrabackup/2.0

[Sergei Glushchenko]

Bug 1095551
Unnecessary long sleep() in innobackupex leads to FTWRL taking too long.
2 seconds sleep interval in mysql_ping been replaced by 100 milliseconds sleep interval.

http://jenkins.percona.com/view/XtraBackup/job/percona-xtrabackup-2.0-param/318/

[Alexey Kopytov (akopytov)]

review: Approve

=== modified file 'innobackupex'
--- innobackupex	2013-01-02 04:20:08 +0000
+++ innobackupex	2013-01-04 05:17:24 +0000
@@ -18,6 +18,7 @@
 use File::Find;
 use File::Copy;
 use English qw(-no_match_vars);
+use Time::HiRes qw(usleep);
 
 # version of this script
 my $innobackup_version = '1.5.1-xtrabackup';
@@ -912,7 +913,7 @@
     print STDERR "$prefix Waiting for ibbackup (pid=$ibbackup_pid) to suspend\n";
     print STDERR "$prefix Suspend file '$suspend_file'\n\n";
     for (;;) {
-        sleep 2;
+        usleep(100000);
         last if -e $suspend_file;
 
         # check that ibbackup child process is still alive