diff --git a/bin/pt-mysql-summary b/bin/pt-mysql-summary
index 9505ddf1..1f3e39b4 100755
--- a/bin/pt-mysql-summary
+++ b/bin/pt-mysql-summary
@@ -1004,19 +1004,19 @@ feat_on() {
    local varname="$2"
    [ -e "$file" ] || return
 
-   if [ "$( get_var "$varname" "${file}" )" ]; then
+   if [ "$( grep "$varname" "${file}" )" ]; then
       local var="$(awk "\$1 ~ /^$2$/ { print \$2 }" $file)"
       if [ "${var}" = "ON" ]; then
          echo "Enabled"
       elif [ "${var}" = "OFF" -o "${var}" = "0" -o -z "${var}" ]; then
          echo "Disabled"
-      elif [ "$3" = "ne" ]; then
+      elif [ "${3:-""}" = "ne" ]; then
          if [ "${var}" != "$4" ]; then
             echo "Enabled"
          else
             echo "Disabled"
          fi
-      elif [ "$3" = "gt" ]; then
+      elif [ "${3:-""}" = "gt" ]; then
          if [ "${var}" -gt "$4" ]; then
             echo "Enabled"
          else
@@ -1032,6 +1032,21 @@ feat_on() {
    fi
 }
 
+feat_on_renamed () {
+   local file="$1"
+   shift;
+
+   for varname in "$@"; do
+      local feat_on="$( feat_on "$file" $varname )"
+      if [ "${feat_on:-"Not Supported"}" != "Not Supported" ]; then
+         echo $feat_on
+         return
+      fi
+   done
+
+   echo "Not Supported"
+}
+
 get_table_cache () {
    local file="$1"
 
@@ -1761,25 +1776,40 @@ section_percona_server_features () {
    [ -e "$file" ] || return
 
    name_val "Table & Index Stats"   \
-            "$(feat_on "$file" userstat_running)"
+            "$(feat_on_renamed "$file" userstat_running userstat)"
    name_val "Multiple I/O Threads"  \
             "$(feat_on "$file" innodb_read_io_threads gt 1)"
+
    name_val "Corruption Resilient"  \
-            "$(feat_on "$file" innodb_pass_corrupt_table)"
+            "$(feat_on_renamed "$file" innodb_pass_corrupt_table innodb_corrupt_table_action)"
+
    name_val "Durable Replication"   \
-            "$(feat_on "$file" innodb_overwrite_relay_log_info)"
+            "$(feat_on_renamed "$file" innodb_overwrite_relay_log_info innodb_recovery_update_relay_log)"
+
    name_val "Import InnoDB Tables"  \
-            "$(feat_on "$file" innodb_expand_import)"
+            "$(feat_on_renamed "$file" innodb_expand_import innodb_import_table_from_xtrabackup)"
+
    name_val "Fast Server Restarts"  \
-            "$(feat_on "$file" innodb_auto_lru_dump)"
+            "$(feat_on_renamed "$file" innodb_auto_lru_dump innodb_buffer_pool_restore_at_startup)"
+   
    name_val "Enhanced Logging"      \
             "$(feat_on "$file" log_slow_verbosity ne microtime)"
    name_val "Replica Perf Logging"  \
             "$(feat_on "$file" log_slow_slave_statements)"
+
    name_val "Response Time Hist."   \
-            "$(feat_on "$file" enable_query_response_time_stats)"
-   name_val "Smooth Flushing"       \
-            "$(feat_on "$file" innodb_adaptive_checkpoint ne none)"
+            "$(feat_on_renamed "$file" enable_query_response_time_stats query_response_time_stats)"
+
+   local smooth_flushing="$(feat_on_renamed "$file" innodb_adaptive_checkpoint innodb_adaptive_flushing_method)"
+   if  [ "${smooth_flushing:-""}" != "Not Supported" ]; then
+      if [ -n "$(get_var innodb_adaptive_checkpoint "$file")" ]; then
+         smooth_flushing="$(feat_on "$file" "innodb_adaptive_checkpoint" ne none)"
+      else
+         smooth_flushing="$(feat_on "$file" "innodb_adaptive_flushing_method" ne native)"
+      fi
+   fi
+   name_val "Smooth Flushing" "$smooth_flushing"
+   
    name_val "HandlerSocket NoSQL"   \
             "$(feat_on "$file" handlersocket_port)"
    name_val "Fast Hash UDFs"   \
diff --git a/lib/bash/report_mysql_info.sh b/lib/bash/report_mysql_info.sh
index 7a36ff2b..eb3749c6 100644
--- a/lib/bash/report_mysql_info.sh
+++ b/lib/bash/report_mysql_info.sh
@@ -40,19 +40,19 @@ feat_on() {
    local varname="$2"
    [ -e "$file" ] || return
 
-   if [ "$( get_var "$varname" "${file}" )" ]; then
+   if [ "$( grep "$varname" "${file}" )" ]; then
       local var="$(awk "\$1 ~ /^$2$/ { print \$2 }" $file)"
       if [ "${var}" = "ON" ]; then
          echo "Enabled"
       elif [ "${var}" = "OFF" -o "${var}" = "0" -o -z "${var}" ]; then
          echo "Disabled"
-      elif [ "$3" = "ne" ]; then
+      elif [ "${3:-""}" = "ne" ]; then
          if [ "${var}" != "$4" ]; then
             echo "Enabled"
          else
             echo "Disabled"
          fi
-      elif [ "$3" = "gt" ]; then
+      elif [ "${3:-""}" = "gt" ]; then
          if [ "${var}" -gt "$4" ]; then
             echo "Enabled"
          else
@@ -68,6 +68,21 @@ feat_on() {
    fi
 }
 
+feat_on_renamed () {
+   local file="$1"
+   shift;
+
+   for varname in "$@"; do
+      local feat_on="$( feat_on "$file" $varname )"
+      if [ "${feat_on:-"Not Supported"}" != "Not Supported" ]; then
+         echo $feat_on
+         return
+      fi
+   done
+
+   echo "Not Supported"
+}
+
 get_table_cache () {
    local file="$1"
 
@@ -854,26 +869,50 @@ section_percona_server_features () {
 
    [ -e "$file" ] || return
 
+   # Renamed to userstat in 5.5.10-20.1
    name_val "Table & Index Stats"   \
-            "$(feat_on "$file" userstat_running)"
+            "$(feat_on_renamed "$file" userstat_running userstat)"
    name_val "Multiple I/O Threads"  \
             "$(feat_on "$file" innodb_read_io_threads gt 1)"
+
+   # Renamed to innodb_corrupt_table_action in 5.5.10-20.1
    name_val "Corruption Resilient"  \
-            "$(feat_on "$file" innodb_pass_corrupt_table)"
+            "$(feat_on_renamed "$file" innodb_pass_corrupt_table innodb_corrupt_table_action)"
+
+   # Renamed to innodb_recovery_update_relay_log in 5.5.10-20.1
    name_val "Durable Replication"   \
-            "$(feat_on "$file" innodb_overwrite_relay_log_info)"
+            "$(feat_on_renamed "$file" innodb_overwrite_relay_log_info innodb_recovery_update_relay_log)"
+
+   # Renamed to innodb_import_table_from_xtrabackup in 5.5.10-20.1
    name_val "Import InnoDB Tables"  \
-            "$(feat_on "$file" innodb_expand_import)"
+            "$(feat_on_renamed "$file" innodb_expand_import innodb_import_table_from_xtrabackup)"
+
+   # Renamed to innodb_buffer_pool_restore_at_startup in 5.5.10-20.1
    name_val "Fast Server Restarts"  \
-            "$(feat_on "$file" innodb_auto_lru_dump)"
+            "$(feat_on_renamed "$file" innodb_auto_lru_dump innodb_buffer_pool_restore_at_startup)"
+   
    name_val "Enhanced Logging"      \
             "$(feat_on "$file" log_slow_verbosity ne microtime)"
    name_val "Replica Perf Logging"  \
             "$(feat_on "$file" log_slow_slave_statements)"
+
+   # Renamed to query_response_time_stats in 5.5
    name_val "Response Time Hist."   \
-            "$(feat_on "$file" enable_query_response_time_stats)"
-   name_val "Smooth Flushing"       \
-            "$(feat_on "$file" innodb_adaptive_checkpoint ne none)"
+            "$(feat_on_renamed "$file" enable_query_response_time_stats query_response_time_stats)"
+
+   # Renamed to innodb_adaptive_flushing_method in 5.5
+   # This one is a bit more convulted than the rest because not only did it
+   # change names, but also default values: none in 5.1, native in 5.5
+   local smooth_flushing="$(feat_on_renamed "$file" innodb_adaptive_checkpoint innodb_adaptive_flushing_method)"
+   if  [ "${smooth_flushing:-""}" != "Not Supported" ]; then
+      if [ -n "$(get_var innodb_adaptive_checkpoint "$file")" ]; then
+         smooth_flushing="$(feat_on "$file" "innodb_adaptive_checkpoint" ne none)"
+      else
+         smooth_flushing="$(feat_on "$file" "innodb_adaptive_flushing_method" ne native)"
+      fi
+   fi
+   name_val "Smooth Flushing" "$smooth_flushing"
+   
    name_val "HandlerSocket NoSQL"   \
             "$(feat_on "$file" handlersocket_port)"
    name_val "Fast Hash UDFs"   \
diff --git a/t/lib/bash/report_mysql_info.sh b/t/lib/bash/report_mysql_info.sh
index 3d3fa205..68515b9c 100644
--- a/t/lib/bash/report_mysql_info.sh
+++ b/t/lib/bash/report_mysql_info.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-plan 41
+plan 44
 
 . "$LIB_DIR/alt_cmds.sh"
 . "$LIB_DIR/log_warn_die.sh"
@@ -782,6 +782,31 @@ is \
    "parse_wsrep_provider_options works for gcache.name"
 
 
+# ###########################################################################
+# pt-mysql-summary not Percona Server 5.5-ready
+# https://bugs.launchpad.net/percona-toolkit/+bug/1015590
+# ###########################################################################
+
+section_percona_server_features "$samples/percona-server-5.5-variables" > "$PT_TMPDIR/got"
+
+no_diff \
+   "$PT_TMPDIR/got" \
+   "$samples/expected_output_ps-features.txt" \
+   "Bug 1015590: pt-mysql-summary not Percona Server 5.5-ready"
+
+section_percona_server_features "$samples/percona-server-5.1-variables" > "$PT_TMPDIR/got"
+no_diff \
+   "$PT_TMPDIR/got" \
+   "$samples/expected_output_ps-5.1-features.txt" \
+   "Bug 1015590: section_percona_server_features works on 5.1 with innodb_adaptive_checkpoint=none"
+
+section_percona_server_features "$samples/percona-server-5.1-variables-martin" > "$PT_TMPDIR/got"
+cp "$PT_TMPDIR/got" /tmp/dasgot
+no_diff \
+   "$PT_TMPDIR/got" \
+   "$samples/expected_output_ps-5.1-martin.txt" \
+   "section_percona_server_features works on 5.1"
+
 # ###########################################################################
 # Done
 # ###########################################################################
diff --git a/t/pt-mysql-summary/samples/expected_output_ps-5.1-features.txt b/t/pt-mysql-summary/samples/expected_output_ps-5.1-features.txt
new file mode 100644
index 00000000..3305e641
--- /dev/null
+++ b/t/pt-mysql-summary/samples/expected_output_ps-5.1-features.txt
@@ -0,0 +1,12 @@
+      Table & Index Stats | Disabled
+     Multiple I/O Threads | Enabled
+     Corruption Resilient | Disabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Enabled
+     Replica Perf Logging | Disabled
+      Response Time Hist. | Disabled
+          Smooth Flushing | Disabled
+      HandlerSocket NoSQL | Not Supported
+           Fast Hash UDFs | Unknown
diff --git a/t/pt-mysql-summary/samples/expected_output_ps-5.1-martin.txt b/t/pt-mysql-summary/samples/expected_output_ps-5.1-martin.txt
new file mode 100644
index 00000000..6103e3b7
--- /dev/null
+++ b/t/pt-mysql-summary/samples/expected_output_ps-5.1-martin.txt
@@ -0,0 +1,12 @@
+      Table & Index Stats | Disabled
+     Multiple I/O Threads | Enabled
+     Corruption Resilient | Disabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Disabled
+     Replica Perf Logging | Disabled
+      Response Time Hist. | Disabled
+          Smooth Flushing | Enabled
+      HandlerSocket NoSQL | Not Supported
+           Fast Hash UDFs | 
diff --git a/t/pt-mysql-summary/samples/expected_output_ps-features.txt b/t/pt-mysql-summary/samples/expected_output_ps-features.txt
new file mode 100644
index 00000000..8cc26d66
--- /dev/null
+++ b/t/pt-mysql-summary/samples/expected_output_ps-features.txt
@@ -0,0 +1,12 @@
+      Table & Index Stats | Disabled
+     Multiple I/O Threads | Enabled
+     Corruption Resilient | Enabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Disabled
+     Replica Perf Logging | Disabled
+      Response Time Hist. | Disabled
+          Smooth Flushing | Enabled
+      HandlerSocket NoSQL | Not Supported
+           Fast Hash UDFs | Unknown
diff --git a/t/pt-mysql-summary/samples/expected_output_temp002.txt b/t/pt-mysql-summary/samples/expected_output_temp002.txt
index fa2a4646..4775f05f 100644
--- a/t/pt-mysql-summary/samples/expected_output_temp002.txt
+++ b/t/pt-mysql-summary/samples/expected_output_temp002.txt
@@ -111,16 +111,16 @@ Uptime                                    90000           1           1
                      Size | 400
                     Usage | 10%
 # Key Percona Server features ################################
-      Table & Index Stats | Not Supported
+      Table & Index Stats | Disabled
      Multiple I/O Threads | Enabled
-     Corruption Resilient | Not Supported
-      Durable Replication | Not Supported
-     Import InnoDB Tables | Not Supported
-     Fast Server Restarts | Not Supported
-         Enhanced Logging | Not Supported
+     Corruption Resilient | Enabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Disabled
      Replica Perf Logging | Disabled
-      Response Time Hist. | Not Supported
-          Smooth Flushing | Not Supported
+      Response Time Hist. | Disabled
+          Smooth Flushing | Enabled
       HandlerSocket NoSQL | Not Supported
            Fast Hash UDFs | Unknown
 # Percona XtraDB Cluster #####################################
diff --git a/t/pt-mysql-summary/samples/expected_output_temp006.txt b/t/pt-mysql-summary/samples/expected_output_temp006.txt
index b4fc3827..4af4a16d 100644
--- a/t/pt-mysql-summary/samples/expected_output_temp006.txt
+++ b/t/pt-mysql-summary/samples/expected_output_temp006.txt
@@ -188,16 +188,16 @@ wsrep_cluster_size                          100
                      Size | 400
                     Usage | 10%
 # Key Percona Server features ################################
-      Table & Index Stats | Not Supported
+      Table & Index Stats | Disabled
      Multiple I/O Threads | Enabled
-     Corruption Resilient | Not Supported
-      Durable Replication | Not Supported
-     Import InnoDB Tables | Not Supported
-     Fast Server Restarts | Not Supported
-         Enhanced Logging | Not Supported
+     Corruption Resilient | Enabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Disabled
      Replica Perf Logging | Disabled
-      Response Time Hist. | Not Supported
-          Smooth Flushing | Not Supported
+      Response Time Hist. | Disabled
+          Smooth Flushing | Enabled
       HandlerSocket NoSQL | Not Supported
            Fast Hash UDFs | Unknown
 # Percona XtraDB Cluster #####################################
diff --git a/t/pt-mysql-summary/samples/expected_output_temp007.txt b/t/pt-mysql-summary/samples/expected_output_temp007.txt
index 65ac0cb5..3e79c878 100644
--- a/t/pt-mysql-summary/samples/expected_output_temp007.txt
+++ b/t/pt-mysql-summary/samples/expected_output_temp007.txt
@@ -154,16 +154,16 @@ wsrep_local_index                   4000000000000    45000000
                      Size | 400
                     Usage | 15%
 # Key Percona Server features ################################
-      Table & Index Stats | Not Supported
+      Table & Index Stats | Disabled
      Multiple I/O Threads | Enabled
-     Corruption Resilient | Not Supported
-      Durable Replication | Not Supported
-     Import InnoDB Tables | Not Supported
-     Fast Server Restarts | Not Supported
-         Enhanced Logging | Not Supported
+     Corruption Resilient | Enabled
+      Durable Replication | Disabled
+     Import InnoDB Tables | Disabled
+     Fast Server Restarts | Disabled
+         Enhanced Logging | Disabled
      Replica Perf Logging | Disabled
-      Response Time Hist. | Not Supported
-          Smooth Flushing | Not Supported
+      Response Time Hist. | Disabled
+          Smooth Flushing | Enabled
       HandlerSocket NoSQL | Not Supported
            Fast Hash UDFs | Unknown
 # Percona XtraDB Cluster #####################################
diff --git a/t/pt-mysql-summary/samples/percona-server-5.1-variables b/t/pt-mysql-summary/samples/percona-server-5.1-variables
new file mode 100644
index 00000000..96d8312b
--- /dev/null
+++ b/t/pt-mysql-summary/samples/percona-server-5.1-variables
@@ -0,0 +1,363 @@
+auto_increment_increment	1
+auto_increment_offset	1
+autocommit	ON
+automatic_sp_privileges	ON
+back_log	50
+basedir	/home/hugmeir/mysql5/mysqlbrew/mysqls/Percona-Server-5.1/
+big_tables	OFF
+binlog_cache_size	32768
+binlog_direct_non_transactional_updates	OFF
+binlog_format	STATEMENT
+bulk_insert_buffer_size	8388608
+character_set_client	latin1
+character_set_connection	latin1
+character_set_database	latin1
+character_set_filesystem	binary
+character_set_results	latin1
+character_set_server	latin1
+character_set_system	utf8
+character_sets_dir	/home/hugmeir/mysql5/mysqlbrew/mysqls/Percona-Server-5.1/share/mysql/charsets/
+collation_connection	latin1_swedish_ci
+collation_database	latin1_swedish_ci
+collation_server	latin1_swedish_ci
+completion_type	0
+concurrent_insert	1
+connect_timeout	10
+datadir	/tmp/12345/data/
+date_format	%Y-%m-%d
+datetime_format	%Y-%m-%d %H:%i:%s
+default_week_format	0
+delay_key_write	ON
+delayed_insert_limit	100
+delayed_insert_timeout	300
+delayed_queue_size	1000
+div_precision_increment	4
+enable_query_response_time_stats	OFF
+engine_condition_pushdown	ON
+error_count	0
+event_scheduler	OFF
+expand_fast_index_creation	OFF
+expire_logs_days	0
+fast_index_creation	ON
+flush	OFF
+flush_time	0
+foreign_key_checks	ON
+ft_boolean_syntax	+ -><()~*:""&|
+ft_max_word_len	84
+ft_min_word_len	4
+ft_query_expansion_limit	20
+ft_stopword_file	(built-in)
+general_log	OFF
+general_log_file	/tmp/12345/data/mysql_sandbox12345.log
+group_concat_max_len	1024
+have_community_features	YES
+have_compress	YES
+have_crypt	YES
+have_csv	YES
+have_dynamic_loading	YES
+have_geometry	YES
+have_innodb	YES
+have_ndbcluster	NO
+have_openssl	DISABLED
+have_partitioning	YES
+have_query_cache	YES
+have_response_time_distribution	YES
+have_rtree_keys	YES
+have_ssl	DISABLED
+have_symlink	YES
+hostname	hugmeir
+identity	0
+ignore_builtin_innodb	OFF
+init_connect	
+init_file	
+init_slave	
+innodb_adaptive_checkpoint	none
+innodb_adaptive_flushing	OFF
+innodb_adaptive_hash_index	ON
+innodb_additional_mem_pool_size	8388608
+innodb_auto_lru_dump	0
+innodb_autoextend_increment	8
+innodb_autoinc_lock_mode	1
+innodb_blocking_lru_restore	OFF
+innodb_buffer_pool_shm_checksum	ON
+innodb_buffer_pool_shm_key	0
+innodb_buffer_pool_size	33554432
+innodb_change_buffering	inserts
+innodb_checkpoint_age_target	0
+innodb_checksums	ON
+innodb_commit_concurrency	0
+innodb_concurrency_tickets	500
+innodb_data_file_path	ibdata1:10M:autoextend
+innodb_data_home_dir	/tmp/12345/data
+innodb_dict_size_limit	0
+innodb_doublewrite	ON
+innodb_doublewrite_file	
+innodb_enable_unsafe_group_commit	0
+innodb_expand_import	0
+innodb_extra_rsegments	0
+innodb_extra_undoslots	OFF
+innodb_fake_changes	OFF
+innodb_fast_checksum	OFF
+innodb_fast_recovery	OFF
+innodb_fast_shutdown	1
+innodb_file_format	Antelope
+innodb_file_format_check	Antelope
+innodb_file_per_table	OFF
+innodb_flush_log_at_trx_commit	1
+innodb_flush_log_at_trx_commit_session	3
+innodb_flush_method	
+innodb_flush_neighbor_pages	1
+innodb_force_recovery	0
+innodb_ibuf_accel_rate	100
+innodb_ibuf_active_contract	1
+innodb_ibuf_max_size	16760832
+innodb_io_capacity	200
+innodb_kill_idle_transaction	0
+innodb_lazy_drop_table	0
+innodb_lock_wait_timeout	3
+innodb_locks_unsafe_for_binlog	OFF
+innodb_log_block_size	512
+innodb_log_buffer_size	8388608
+innodb_log_file_size	5242880
+innodb_log_files_in_group	2
+innodb_log_group_home_dir	/tmp/12345/data
+innodb_max_dirty_pages_pct	75
+innodb_max_purge_lag	0
+innodb_mirrored_log_groups	1
+innodb_old_blocks_pct	37
+innodb_old_blocks_time	0
+innodb_open_files	300
+innodb_overwrite_relay_log_info	OFF
+innodb_page_size	16384
+innodb_pass_corrupt_table	0
+innodb_random_read_ahead	OFF
+innodb_read_ahead	linear
+innodb_read_ahead_threshold	56
+innodb_read_io_threads	4
+innodb_recovery_stats	OFF
+innodb_replication_delay	0
+innodb_rollback_on_timeout	OFF
+innodb_show_locks_held	10
+innodb_show_verbose_locks	0
+innodb_spin_wait_delay	6
+innodb_stats_auto_update	1
+innodb_stats_method	nulls_equal
+innodb_stats_on_metadata	ON
+innodb_stats_sample_pages	8
+innodb_stats_update_need_lock	1
+innodb_strict_mode	OFF
+innodb_support_xa	ON
+innodb_sync_spin_loops	30
+innodb_table_locks	ON
+innodb_thread_concurrency	0
+innodb_thread_concurrency_timer_based	OFF
+innodb_thread_sleep_delay	10000
+innodb_use_purge_thread	1
+innodb_use_sys_malloc	ON
+innodb_use_sys_stats_table	OFF
+innodb_version	1.0.17-13.2
+innodb_write_io_threads	4
+insert_id	0
+interactive_timeout	28800
+join_buffer_size	131072
+keep_files_on_create	OFF
+key_buffer_size	16777216
+key_cache_age_threshold	300
+key_cache_block_size	1024
+key_cache_division_limit	100
+language	/home/hugmeir/mysql5/mysqlbrew/mysqls/Percona-Server-5.1/share/mysql/english/
+large_files_support	ON
+large_page_size	0
+large_pages	OFF
+last_insert_id	0
+lc_time_names	en_US
+license	GPL
+local_infile	ON
+locked_in_memory	OFF
+log	OFF
+log_bin	ON
+log_bin_trust_function_creators	OFF
+log_bin_trust_routine_creators	OFF
+log_error	/tmp/12345/data/mysqld.log
+log_output	FILE
+log_queries_not_using_indexes	OFF
+log_slave_updates	ON
+log_slow_admin_statements	OFF
+log_slow_filter	
+log_slow_queries	OFF
+log_slow_rate_limit	1
+log_slow_slave_statements	OFF
+log_slow_sp_statements	ON
+log_slow_timestamp_every	OFF
+log_slow_verbosity	full
+log_warnings	1
+long_query_time	10.000000
+low_priority_updates	OFF
+lower_case_file_system	OFF
+lower_case_table_names	0
+max_allowed_packet	1048576
+max_binlog_cache_size	4294963200
+max_binlog_size	1073741824
+max_connect_errors	10
+max_connections	151
+max_delayed_threads	20
+max_error_count	64
+max_heap_table_size	16777216
+max_insert_delayed_threads	20
+max_join_size	4294967295
+max_length_for_sort_data	1024
+max_long_data_size	1048576
+max_prepared_stmt_count	16382
+max_relay_log_size	0
+max_seeks_for_key	4294967295
+max_sort_length	1024
+max_sp_recursion_depth	0
+max_tmp_tables	32
+max_user_connections	0
+max_write_lock_count	4294967295
+min_examined_row_limit	0
+multi_range_count	256
+myisam_data_pointer_size	6
+myisam_max_sort_file_size	2146435072
+myisam_mmap_size	4294967295
+myisam_recover_options	OFF
+myisam_repair_threads	1
+myisam_sort_buffer_size	8388608
+myisam_stats_method	nulls_unequal
+myisam_use_mmap	OFF
+net_buffer_length	16384
+net_read_timeout	30
+net_retry_count	10
+net_write_timeout	60
+new	OFF
+old	OFF
+old_alter_table	OFF
+old_passwords	OFF
+open_files_limit	1024
+optimizer_fix	ON
+optimizer_prune_level	1
+optimizer_search_depth	62
+optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+pid_file	/tmp/12345/data/mysql_sandbox12345.pid
+plugin_dir	/home/hugmeir/mysql5/mysqlbrew/mysqls/Percona-Server-5.1/lib/mysql/plugin
+port	12345
+preload_buffer_size	32768
+profiling	OFF
+profiling_history_size	15
+profiling_server	OFF
+profiling_use_getrusage	OFF
+protocol_version	10
+pseudo_thread_id	0
+query_alloc_block_size	8192
+query_cache_limit	1048576
+query_cache_min_res_unit	4096
+query_cache_size	0
+query_cache_strip_comments	OFF
+query_cache_type	ON
+query_cache_wlock_invalidate	OFF
+query_prealloc_size	8192
+query_response_time_range_base	10
+rand_seed1	
+rand_seed2	
+range_alloc_block_size	4096
+read_buffer_size	131072
+read_only	OFF
+read_rnd_buffer_size	262144
+relay_log	mysql-relay-bin
+relay_log_index	
+relay_log_info_file	relay-log.info
+relay_log_purge	ON
+relay_log_space_limit	0
+report_host	127.0.0.1
+report_password	
+report_port	12345
+report_user	
+rpl_recovery_rank	0
+secure_auth	OFF
+secure_file_priv	
+server_id	12345
+skip_external_locking	ON
+skip_name_resolve	OFF
+skip_networking	OFF
+skip_show_database	OFF
+slave_compressed_protocol	OFF
+slave_exec_mode	STRICT
+slave_load_tmpdir	/tmp
+slave_net_timeout	3600
+slave_skip_errors	OFF
+slave_transaction_retries	10
+slow_launch_time	2
+slow_query_log	OFF
+slow_query_log_file	/tmp/12345/data/mysql_sandbox12345-slow.log
+slow_query_log_microseconds_timestamp	OFF
+socket	/tmp/12345/mysql_sandbox12345.sock
+sort_buffer_size	2097144
+sql_auto_is_null	ON
+sql_big_selects	ON
+sql_big_tables	OFF
+sql_buffer_result	OFF
+sql_log_bin	ON
+sql_log_off	OFF
+sql_log_update	ON
+sql_low_priority_updates	OFF
+sql_max_join_size	4294967295
+sql_mode	
+sql_notes	ON
+sql_quote_show_create	ON
+sql_safe_updates	OFF
+sql_select_limit	4294967295
+sql_slave_skip_counter	
+sql_warnings	OFF
+ssl_ca	
+ssl_capath	
+ssl_cert	
+ssl_cipher	
+ssl_key	
+storage_engine	MyISAM
+suppress_log_warning_1592	OFF
+sync_binlog	0
+sync_frm	ON
+system_time_zone	ART
+table_definition_cache	256
+table_lock_wait_timeout	50
+table_open_cache	64
+table_type	MyISAM
+thread_cache_size	0
+thread_handling	one-thread-per-connection
+thread_stack	196608
+thread_statistics	OFF
+time_format	%H:%i:%s
+time_zone	SYSTEM
+timed_mutexes	OFF
+timestamp	1333157599
+tmp_table_size	16777216
+tmpdir	/tmp
+transaction_alloc_block_size	8192
+transaction_prealloc_size	4096
+tx_isolation	REPEATABLE-READ
+unique_checks	ON
+updatable_views_with_limit	YES
+use_global_log_slow_control	none
+use_global_long_query_time	OFF
+userstat_running	OFF
+version	5.1.61rel13.2-log
+version_comment	Percona Server with XtraDB (GPL), Release rel13.2, Revision 430
+version_compile_machine	i686
+version_compile_os	pc-linux-gnu
+wait_timeout	28800
+warning_count	0
+internal::nice_of_2750    0
+internal::oom_of_2750    0
+internal::nice_of_2571    0
+internal::oom_of_2571    0
+internal::nice_of_2406    0
+internal::oom_of_2406    0
+pt-summary-internal-current_time    2012-03-30 21:45
+pt-summary-internal-Config_File_path    /tmp/12345/my.sandbox.cnf
+pt-summary-internal-mysql_executable    /home/hugmeir/mysql5/mysqlbrew/mysqls/Percona-Server-5.1/bin/mysql
+pt-summary-internal-now    2012-03-30 22:33:19
+pt-summary-internal-user   msandbox@%
+pt-summary-internal-FNV_64   Unknown
+pt-summary-internal-trigger_count   6
+pt-summary-internal-mysqld_executable_1   Yes
+pt-summary-internal-pid_file_exists   1
diff --git a/t/pt-mysql-summary/samples/percona-server-5.1-variables-martin b/t/pt-mysql-summary/samples/percona-server-5.1-variables-martin
new file mode 100644
index 00000000..3f582f58
--- /dev/null
+++ b/t/pt-mysql-summary/samples/percona-server-5.1-variables-martin
@@ -0,0 +1,353 @@
+auto_increment_increment	1
+auto_increment_offset	1
+autocommit	ON
+automatic_sp_privileges	ON
+back_log	50
+basedir	/home/martin/mysqlversions/percona/percona-5.1.66/
+big_tables	OFF
+binlog_cache_size	32768
+binlog_direct_non_transactional_updates	OFF
+binlog_format	STATEMENT
+bulk_insert_buffer_size	8388608
+character_set_client	utf8
+character_set_connection	utf8
+character_set_database	utf8
+character_set_filesystem	binary
+character_set_results	utf8
+character_set_server	utf8
+character_set_system	utf8
+character_sets_dir	/home/martin/mysqlversions/percona/percona-5.1.66/share/mysql/charsets/
+collation_connection	utf8_general_ci
+collation_database	utf8_general_ci
+collation_server	utf8_general_ci
+completion_type	0
+concurrent_insert	1
+connect_timeout	10
+datadir	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/data/
+date_format	%Y-%m-%d
+datetime_format	%Y-%m-%d %H:%i:%s
+default_week_format	0
+delay_key_write	ON
+delayed_insert_limit	100
+delayed_insert_timeout	300
+delayed_queue_size	1000
+div_precision_increment	4
+enable_query_response_time_stats	OFF
+engine_condition_pushdown	ON
+error_count	0
+event_scheduler	OFF
+expand_fast_index_creation	OFF
+expire_logs_days	0
+fast_index_creation	ON
+flush	OFF
+flush_time	0
+foreign_key_checks	ON
+ft_boolean_syntax	+ -><()~*:""&|
+ft_max_word_len	84
+ft_min_word_len	4
+ft_query_expansion_limit	20
+ft_stopword_file	(built-in)
+general_log	OFF
+general_log_file	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/data/mysql_sandbox5166.log
+group_concat_max_len	1024
+have_community_features	YES
+have_compress	YES
+have_crypt	YES
+have_csv	YES
+have_dynamic_loading	YES
+have_flashcache	YES
+have_geometry	YES
+have_innodb	YES
+have_ndbcluster	NO
+have_openssl	DISABLED
+have_partitioning	YES
+have_query_cache	YES
+have_response_time_distribution	YES
+have_rtree_keys	YES
+have_ssl	DISABLED
+have_symlink	YES
+hostname	perconatest
+identity	0
+ignore_builtin_innodb	OFF
+init_connect	
+init_file	
+init_slave	
+innodb_adaptive_checkpoint	estimate
+innodb_adaptive_flushing	OFF
+innodb_adaptive_hash_index	ON
+innodb_additional_mem_pool_size	8388608
+innodb_auto_lru_dump	0
+innodb_autoextend_increment	8
+innodb_autoinc_lock_mode	1
+innodb_blocking_lru_restore	OFF
+innodb_buffer_pool_shm_checksum	ON
+innodb_buffer_pool_shm_key	0
+innodb_buffer_pool_size	134217728
+innodb_change_buffering	inserts
+innodb_changed_pages_limit	1000000
+innodb_checkpoint_age_target	0
+innodb_checksums	ON
+innodb_commit_concurrency	0
+innodb_concurrency_tickets	500
+innodb_data_file_path	ibdata1:10M:autoextend
+innodb_data_home_dir	
+innodb_dict_size_limit	0
+innodb_doublewrite	ON
+innodb_doublewrite_file	
+innodb_enable_unsafe_group_commit	0
+innodb_expand_import	0
+innodb_extra_rsegments	0
+innodb_extra_undoslots	OFF
+innodb_fake_changes	OFF
+innodb_fast_checksum	OFF
+innodb_fast_recovery	OFF
+innodb_fast_shutdown	1
+innodb_file_format	Antelope
+innodb_file_format_check	Barracuda
+innodb_file_per_table	OFF
+innodb_flush_log_at_trx_commit	1
+innodb_flush_log_at_trx_commit_session	3
+innodb_flush_method	
+innodb_flush_neighbor_pages	1
+innodb_force_recovery	0
+innodb_ibuf_accel_rate	100
+innodb_ibuf_active_contract	1
+innodb_ibuf_max_size	67092480
+innodb_io_capacity	200
+innodb_kill_idle_transaction	0
+innodb_lazy_drop_table	0
+innodb_lock_wait_timeout	50
+innodb_locks_unsafe_for_binlog	OFF
+innodb_log_block_size	512
+innodb_log_buffer_size	8388608
+innodb_log_file_size	5242880
+innodb_log_files_in_group	2
+innodb_log_group_home_dir	./
+innodb_max_dirty_pages_pct	75
+innodb_max_purge_lag	0
+innodb_mirrored_log_groups	1
+innodb_old_blocks_pct	37
+innodb_old_blocks_time	0
+innodb_open_files	300
+innodb_overwrite_relay_log_info	OFF
+innodb_page_size	16384
+innodb_pass_corrupt_table	0
+innodb_random_read_ahead	OFF
+innodb_read_ahead	linear
+innodb_read_ahead_threshold	56
+innodb_read_io_threads	4
+innodb_recovery_stats	OFF
+innodb_replication_delay	0
+innodb_rollback_on_timeout	OFF
+innodb_show_locks_held	10
+innodb_show_verbose_locks	0
+innodb_spin_wait_delay	6
+innodb_stats_auto_update	1
+innodb_stats_method	nulls_equal
+innodb_stats_on_metadata	ON
+innodb_stats_sample_pages	8
+innodb_stats_update_need_lock	1
+innodb_strict_mode	OFF
+innodb_support_xa	ON
+innodb_sync_spin_loops	30
+innodb_table_locks	ON
+innodb_thread_concurrency	0
+innodb_thread_concurrency_timer_based	OFF
+innodb_thread_sleep_delay	10000
+innodb_track_changed_pages	OFF
+innodb_use_purge_thread	1
+innodb_use_sys_malloc	ON
+innodb_use_sys_stats_table	OFF
+innodb_version	1.0.17-14.1
+innodb_write_io_threads	4
+insert_id	0
+interactive_timeout	28800
+join_buffer_size	131072
+keep_files_on_create	OFF
+key_buffer_size	8384512
+key_cache_age_threshold	300
+key_cache_block_size	1024
+key_cache_division_limit	100
+language	/home/martin/mysqlversions/percona/percona-5.1.66/share/mysql/english/
+large_files_support	ON
+large_page_size	0
+large_pages	OFF
+last_insert_id	0
+lc_time_names	en_US
+license	GPL
+local_infile	ON
+locked_in_memory	OFF
+log	OFF
+log_bin	OFF
+log_bin_trust_function_creators	OFF
+log_bin_trust_routine_creators	OFF
+log_error	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/data/msandbox.err
+log_output	FILE
+log_queries_not_using_indexes	OFF
+log_slave_updates	OFF
+log_slow_admin_statements	OFF
+log_slow_filter	
+log_slow_queries	OFF
+log_slow_rate_limit	1
+log_slow_slave_statements	OFF
+log_slow_sp_statements	ON
+log_slow_timestamp_every	OFF
+log_slow_verbosity	microtime
+log_warnings	1
+long_query_time	10.000000
+low_priority_updates	OFF
+lower_case_file_system	OFF
+lower_case_table_names	0
+max_allowed_packet	1048576
+max_binlog_cache_size	18446744073709547520
+max_binlog_size	1073741824
+max_connect_errors	10
+max_connections	151
+max_delayed_threads	20
+max_error_count	64
+max_heap_table_size	16777216
+max_insert_delayed_threads	20
+max_join_size	18446744073709551615
+max_length_for_sort_data	1024
+max_long_data_size	1048576
+max_prepared_stmt_count	16382
+max_relay_log_size	0
+max_seeks_for_key	18446744073709551615
+max_sort_length	1024
+max_sp_recursion_depth	0
+max_tmp_tables	32
+max_user_connections	0
+max_write_lock_count	18446744073709551615
+min_examined_row_limit	0
+multi_range_count	256
+myisam_data_pointer_size	6
+myisam_max_sort_file_size	9223372036853727232
+myisam_mmap_size	18446744073709551615
+myisam_recover_options	OFF
+myisam_repair_threads	1
+myisam_sort_buffer_size	8388608
+myisam_stats_method	nulls_unequal
+myisam_use_mmap	OFF
+net_buffer_length	16384
+net_read_timeout	30
+net_retry_count	10
+net_write_timeout	60
+new	OFF
+old	OFF
+old_alter_table	OFF
+old_passwords	OFF
+open_files_limit	1024
+optimizer_fix	ON
+optimizer_prune_level	1
+optimizer_search_depth	62
+optimizer_switch	index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on
+pid_file	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/data/mysql_sandbox5166.pid
+plugin_dir	/home/martin/mysqlversions/percona/percona-5.1.66/lib/mysql/plugin
+port	5166
+preload_buffer_size	32768
+profiling	OFF
+profiling_history_size	15
+profiling_server	OFF
+profiling_use_getrusage	OFF
+protocol_version	10
+pseudo_thread_id	0
+query_alloc_block_size	8192
+query_cache_limit	1048576
+query_cache_min_res_unit	4096
+query_cache_size	0
+query_cache_strip_comments	OFF
+query_cache_type	ON
+query_cache_wlock_invalidate	OFF
+query_prealloc_size	8192
+query_response_time_range_base	10
+rand_seed1	
+rand_seed2	
+range_alloc_block_size	4096
+read_buffer_size	131072
+read_only	OFF
+read_rnd_buffer_size	262144
+relay_log	
+relay_log_index	
+relay_log_info_file	relay-log.info
+relay_log_purge	ON
+relay_log_space_limit	0
+report_host	
+report_password	
+report_port	3306
+report_user	
+rpl_recovery_rank	0
+secure_auth	OFF
+secure_file_priv	
+server_id	0
+skip_external_locking	ON
+skip_name_resolve	OFF
+skip_networking	OFF
+skip_show_database	OFF
+slave_compressed_protocol	OFF
+slave_exec_mode	STRICT
+slave_load_tmpdir	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/tmp
+slave_max_allowed_packet	1073741824
+slave_net_timeout	3600
+slave_skip_errors	OFF
+slave_transaction_retries	10
+slow_launch_time	2
+slow_query_log	OFF
+slow_query_log_file	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/data/mysql_sandbox5166-slow.log
+slow_query_log_microseconds_timestamp	OFF
+socket	/tmp/mysql_sandbox5166.sock
+sort_buffer_size	2097144
+sql_auto_is_null	ON
+sql_big_selects	ON
+sql_big_tables	OFF
+sql_buffer_result	OFF
+sql_log_bin	ON
+sql_log_off	OFF
+sql_log_update	ON
+sql_low_priority_updates	OFF
+sql_max_join_size	18446744073709551615
+sql_mode	
+sql_notes	ON
+sql_quote_show_create	ON
+sql_safe_updates	OFF
+sql_select_limit	18446744073709551615
+sql_slave_skip_counter	
+sql_warnings	OFF
+ssl_ca	
+ssl_capath	
+ssl_cert	
+ssl_cipher	
+ssl_key	
+storage_engine	MyISAM
+suppress_log_warning_1592	OFF
+sync_binlog	0
+sync_frm	ON
+system_time_zone	UYST
+table_definition_cache	256
+table_lock_wait_timeout	50
+table_open_cache	64
+table_type	MyISAM
+thread_cache_size	0
+thread_handling	one-thread-per-connection
+thread_stack	262144
+thread_statistics	OFF
+time_format	%H:%i:%s
+time_zone	SYSTEM
+timed_mutexes	OFF
+timestamp	1354309666
+tmp_table_size	16777216
+tmpdir	/home/martin/sandboxes/Percona-Server-5.1.66-rel14.1/tmp
+transaction_alloc_block_size	8192
+transaction_prealloc_size	4096
+tx_isolation	REPEATABLE-READ
+unique_checks	ON
+updatable_views_with_limit	YES
+use_global_log_slow_control	none
+use_global_long_query_time	OFF
+userstat_running	OFF
+version	5.1.66rel14.1
+version_comment	Percona Server with XtraDB (GPL), Release rel14.1, Revision 495
+version_compile_machine	x86_64
+version_compile_os	unknown-linux-gnu
+wait_timeout	28800
+warning_count	0
+
diff --git a/t/pt-mysql-summary/samples/percona-server-5.5-variables b/t/pt-mysql-summary/samples/percona-server-5.5-variables
new file mode 100644
index 00000000..fad868ca
--- /dev/null
+++ b/t/pt-mysql-summary/samples/percona-server-5.5-variables
@@ -0,0 +1,380 @@
+auto_increment_increment	1
+auto_increment_offset	1
+autocommit	ON
+automatic_sp_privileges	ON
+back_log	50
+basedir	/home/hugmeir/mysql/Percona-Server-5.5.23-rel25.3-240.Linux.x86_64
+big_tables	OFF
+binlog_cache_size	32768
+binlog_direct_non_transactional_updates	OFF
+binlog_format	STATEMENT
+binlog_stmt_cache_size	32768
+bulk_insert_buffer_size	8388608
+character_set_client	latin1
+character_set_connection	latin1
+character_set_database	latin1
+character_set_filesystem	binary
+character_set_results	latin1
+character_set_server	latin1
+character_set_system	utf8
+character_sets_dir	/home/hugmeir/mysql/Percona-Server-5.5.23-rel25.3-240.Linux.x86_64/share/charsets/
+collation_connection	latin1_swedish_ci
+collation_database	latin1_swedish_ci
+collation_server	latin1_swedish_ci
+completion_type	NO_CHAIN
+concurrent_insert	AUTO
+connect_timeout	10
+datadir	/tmp/12345/data/
+date_format	%Y-%m-%d
+datetime_format	%Y-%m-%d %H:%i:%s
+default_storage_engine	InnoDB
+default_week_format	0
+delay_key_write	ON
+delayed_insert_limit	100
+delayed_insert_timeout	300
+delayed_queue_size	1000
+div_precision_increment	4
+engine_condition_pushdown	ON
+event_scheduler	OFF
+expand_fast_index_creation	OFF
+expire_logs_days	0
+fast_index_creation	ON
+flush	OFF
+flush_time	0
+foreign_key_checks	ON
+ft_boolean_syntax	+ -><()~*:""&|
+ft_max_word_len	84
+ft_min_word_len	4
+ft_query_expansion_limit	20
+ft_stopword_file	(built-in)
+general_log	ON
+general_log_file	genlog
+group_concat_max_len	1024
+have_compress	YES
+have_crypt	YES
+have_csv	YES
+have_dynamic_loading	YES
+have_geometry	YES
+have_innodb	YES
+have_ndbcluster	NO
+have_openssl	DISABLED
+have_partitioning	YES
+have_profiling	YES
+have_query_cache	YES
+have_response_time_distribution	YES
+have_rtree_keys	YES
+have_ssl	DISABLED
+have_symlink	YES
+hostname	naw
+ignore_builtin_innodb	OFF
+init_connect	
+init_file	
+init_slave	
+innodb_adaptive_flushing	ON
+innodb_adaptive_flushing_method	estimate
+innodb_adaptive_hash_index	ON
+innodb_adaptive_hash_index_partitions	1
+innodb_additional_mem_pool_size	8388608
+innodb_autoextend_increment	8
+innodb_autoinc_lock_mode	1
+innodb_blocking_buffer_pool_restore	OFF
+innodb_buffer_pool_instances	1
+innodb_buffer_pool_restore_at_startup	0
+innodb_buffer_pool_shm_checksum	ON
+innodb_buffer_pool_shm_key	0
+innodb_buffer_pool_size	33554432
+innodb_change_buffering	all
+innodb_checkpoint_age_target	0
+innodb_checksums	ON
+innodb_commit_concurrency	0
+innodb_concurrency_tickets	500
+innodb_corrupt_table_action	assert
+innodb_data_file_path	ibdata1:10M:autoextend
+innodb_data_home_dir	/tmp/12345/data
+innodb_dict_size_limit	0
+innodb_doublewrite	ON
+innodb_doublewrite_file	
+innodb_fake_changes	OFF
+innodb_fast_checksum	OFF
+innodb_fast_shutdown	1
+innodb_file_format	Antelope
+innodb_file_format_check	ON
+innodb_file_format_max	Antelope
+innodb_file_per_table	OFF
+innodb_flush_log_at_trx_commit	1
+innodb_flush_method	
+innodb_flush_neighbor_pages	area
+innodb_force_load_corrupted	OFF
+innodb_force_recovery	0
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+query_prealloc_size	8192
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+relay_log	mysql-relay-bin
+relay_log_index	
+relay_log_info_file	relay-log.info
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+relay_log_space_limit	0
+report_host	127.0.0.1
+report_password	
+report_port	12345
+report_user	
+rpl_recovery_rank	0
+secure_auth	OFF
+secure_file_priv	
+server_id	12345
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+skip_networking	OFF
+skip_show_database	OFF
+slave_compressed_protocol	OFF
+slave_exec_mode	STRICT
+slave_load_tmpdir	/tmp
+slave_net_timeout	3600
+slave_skip_errors	OFF
+slave_transaction_retries	10
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+slow_launch_time	2
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+slow_query_log_timestamp_always	OFF
+slow_query_log_timestamp_precision	second
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+socket	/tmp/12345/mysql_sandbox12345.sock
+sort_buffer_size	2097152
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+ssl_ca	
+ssl_capath	
+ssl_cert	
+ssl_cipher	
+ssl_key	
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+time_format	%H:%i:%s
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+updatable_views_with_limit	YES
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+version_compile_machine	x86_64
+version_compile_os	Linux
+wait_timeout	28800
+internal::nice_of_19928    0
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+pt-summary-internal-Config_File_path    
+pt-summary-internal-mysql_executable    /usr/bin/mysql
+pt-summary-internal-now    2012-11-02 00:12:09
+pt-summary-internal-user   msandbox@%
+pt-summary-internal-FNV_64   Unknown
+pt-summary-internal-trigger_count   6