-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. -- -- This program is free software; you can redistribute it and/or modify -- it under the terms of the GNU General Public License as published by -- the Free Software Foundation; version 2 of the License. -- -- This program is distributed in the hope that it will be useful, -- but WITHOUT ANY WARRANTY; without even the implied warranty of -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -- GNU General Public License for more details. -- -- You should have received a copy of the GNU General Public License -- along with this program; if not, write to the Free Software -- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -- -- View: x$host_summary -- -- Summarizes statement activity and connections by host -- -- When the host found is NULL, it is assumed to be a "background" thread. -- -- mysql> select * from x$host_summary; -- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+ -- | host | statements | total_latency | avg_latency | current_connections | total_connections | unique_users | current_memory | total_memory_allocated | -- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+ -- | hal1 | 5685 | 107175100271000 | 18852260381.8821 | 1 | 1 | 1 | 1459022 | 572855680 | -- | hal2 | 225 | 14489223428000 | 64396548568.8889 | 1 | 1 | 1 | 724578 | 84958286 | -- +------+------------+-----------------+------------------+---------------------+-------------------+--------------+----------------+------------------------+ -- CREATE OR REPLACE ALGORITHM = TEMPTABLE DEFINER = 'root'@'localhost' SQL SECURITY INVOKER VIEW x$host_summary ( host, statements, statement_latency, statement_avg_latency, table_scans, file_ios, file_io_latency, current_connections, total_connections, unique_users, current_memory, total_memory_allocated ) AS SELECT IF(accounts.host IS NULL, 'background', accounts.host) AS host, SUM(stmt.total) AS statements, SUM(stmt.total_latency) AS statement_latency, SUM(stmt.total_latency) / SUM(stmt.total) AS statement_avg_latency, SUM(stmt.full_scans) AS table_scans, SUM(io.ios) AS file_ios, SUM(io.io_latency) AS file_io_latency, SUM(accounts.current_connections) AS current_connections, SUM(accounts.total_connections) AS total_connections, COUNT(DISTINCT accounts.user) AS unique_users, SUM(mem.current_allocated) AS current_memory, SUM(mem.total_allocated) AS total_memory_allocated FROM performance_schema.accounts JOIN sys.x$host_summary_by_statement_latency AS stmt ON accounts.host = stmt.host JOIN sys.x$host_summary_by_file_io AS io ON accounts.host = io.host JOIN sys.x$memory_by_host_by_current_bytes mem ON accounts.host = mem.host GROUP BY IF(accounts.host IS NULL, 'background', accounts.host);