Merge pull request #94 from ericherman/evict_table_metric

Evict table metric

Author: Jan Lindström

storage/innobase/include/srv0mon.h

@@ -378,6 +378,8 @@ enum monitor_id_t {
 	MONITOR_SRV_MEM_VALIDATE_MICROSECOND,
 	MONITOR_SRV_PURGE_MICROSECOND,
 	MONITOR_SRV_DICT_LRU_MICROSECOND,
+	MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE,
+	MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE,
 	MONITOR_SRV_CHECKPOINT_MICROSECOND,
 	MONITOR_OVLD_SRV_DBLWR_WRITES,
 	MONITOR_OVLD_SRV_DBLWR_PAGES_WRITTEN,

storage/innobase/srv/srv0mon.cc

@@ -1196,6 +1196,16 @@ static monitor_info_t	innodb_counter_info[] =
 	 MONITOR_NONE,
 	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_MICROSECOND},
 
+	{"innodb_dict_lru_count_active", "server",
+	 "Number of tables evicted from DICT LRU list in the active loop",
+	 MONITOR_NONE,
+	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE},
+
+	{"innodb_dict_lru_count_idle", "server",
+	 "Number of tables evicted from DICT LRU list in the idle loop",
+	 MONITOR_NONE,
+	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE},
+
 	{"innodb_checkpoint_usec", "server",
 	 "Time (in microseconds) spent by master thread to do checkpoint",
 	 MONITOR_NONE,

storage/innobase/srv/srv0srv.cc

@@ -2274,6 +2274,7 @@ srv_master_do_active_tasks(void)
 {
 	ib_time_t	cur_time = ut_time();
 	ullint		counter_time = ut_time_us(NULL);
+	ulint		n_evicted = 0;
 
 	/* First do the tasks that we are suppose to do at each
 	invocation of this function. */
@@ -2334,7 +2335,9 @@ srv_master_do_active_tasks(void)
 
 	if (cur_time % SRV_MASTER_DICT_LRU_INTERVAL == 0) {
 		srv_main_thread_op_info = "enforcing dict cache limit";
-		srv_master_evict_from_table_cache(50);
+		n_evicted = srv_master_evict_from_table_cache(50);
+		MONITOR_INC_VALUE(
+			MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE, n_evicted);
 		MONITOR_INC_TIME_IN_MICRO_SECS(
 			MONITOR_SRV_DICT_LRU_MICROSECOND, counter_time);
 	}
@@ -2366,6 +2369,7 @@ srv_master_do_idle_tasks(void)
 /*==========================*/
 {
 	ullint	counter_time;
+	ulint	n_evicted = 0;
 
 	++srv_main_idle_loops;
 
@@ -2403,7 +2407,9 @@ srv_master_do_idle_tasks(void)
 	}
 
 	srv_main_thread_op_info = "enforcing dict cache limit";
-	srv_master_evict_from_table_cache(100);
+	n_evicted = srv_master_evict_from_table_cache(100);
+        MONITOR_INC_VALUE(
+                MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE, n_evicted);
 	MONITOR_INC_TIME_IN_MICRO_SECS(
 		MONITOR_SRV_DICT_LRU_MICROSECOND, counter_time);
 

storage/xtradb/include/srv0mon.h

@@ -379,6 +379,8 @@ enum monitor_id_t {
 	MONITOR_SRV_MEM_VALIDATE_MICROSECOND,
 	MONITOR_SRV_PURGE_MICROSECOND,
 	MONITOR_SRV_DICT_LRU_MICROSECOND,
+	MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE,
+	MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE,
 	MONITOR_SRV_CHECKPOINT_MICROSECOND,
 	MONITOR_OVLD_SRV_DBLWR_WRITES,
 	MONITOR_OVLD_SRV_DBLWR_PAGES_WRITTEN,

storage/xtradb/srv/srv0mon.cc

@@ -1196,6 +1196,16 @@ static monitor_info_t	innodb_counter_info[] =
 	 MONITOR_NONE,
 	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_MICROSECOND},
 
+	{"innodb_dict_lru_count_active", "server",
+	 "Number of tables evicted from DICT LRU list in the active loop",
+	 MONITOR_NONE,
+	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE},
+
+	{"innodb_dict_lru_count_idle", "server",
+	 "Number of tables evicted from DICT LRU list in the idle loop",
+	 MONITOR_NONE,
+	 MONITOR_DEFAULT_START, MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE},
+
 	{"innodb_checkpoint_usec", "server",
 	 "Time (in microseconds) spent by master thread to do checkpoint",
 	 MONITOR_NONE,

storage/xtradb/srv/srv0srv.cc

@@ -2881,6 +2881,7 @@ srv_master_do_active_tasks(void)
 {
 	ib_time_t	cur_time = ut_time();
 	ullint		counter_time = ut_time_us(NULL);
+	ulint		n_evicted = 0;
 
 	/* First do the tasks that we are suppose to do at each
 	invocation of this function. */
@@ -2941,7 +2942,9 @@ srv_master_do_active_tasks(void)
 
 	if (cur_time % SRV_MASTER_DICT_LRU_INTERVAL == 0) {
 		srv_main_thread_op_info = "enforcing dict cache limit";
-		srv_master_evict_from_table_cache(50);
+		n_evicted = srv_master_evict_from_table_cache(50);
+		MONITOR_INC_VALUE(
+			MONITOR_SRV_DICT_LRU_EVICT_COUNT_ACTIVE, n_evicted);
 		MONITOR_INC_TIME_IN_MICRO_SECS(
 			MONITOR_SRV_DICT_LRU_MICROSECOND, counter_time);
 	}
@@ -2973,6 +2976,7 @@ srv_master_do_idle_tasks(void)
 /*==========================*/
 {
 	ullint	counter_time;
+	ulint	n_evicted = 0;
 
 	++srv_main_idle_loops;
 
@@ -3010,7 +3014,9 @@ srv_master_do_idle_tasks(void)
 	}
 
 	srv_main_thread_op_info = "enforcing dict cache limit";
-	srv_master_evict_from_table_cache(100);
+	n_evicted = srv_master_evict_from_table_cache(100);
+        MONITOR_INC_VALUE(
+                MONITOR_SRV_DICT_LRU_EVICT_COUNT_IDLE, n_evicted);
 	MONITOR_INC_TIME_IN_MICRO_SECS(
 		MONITOR_SRV_DICT_LRU_MICROSECOND, counter_time);