-- 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$host_summary -- -- Summarizes statement activity, file IO and connections by host. -- -- When the host found is NULL, it is assumed to be a "background" thread. -- -- mysql> select * from x$host_summary; -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ -- | host | statements | statement_latency | statement_avg_latency | table_scans | file_ios | file_io_latency | current_connections | total_connections | unique_users | -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ -- | hal | 2925 | 239577283481000 | 81906763583.2479 | 83 | 54709 | 55605611965150 | 1 | 1 | 1 | -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ --
CREATEORREPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'mariadb.sys'@'localhost' SQL SECURITY INVOKER
VIEW x$host_summary (
host,
statements,
statement_latency,
statement_avg_latency,
table_scans,
file_ios,
file_io_latency,
current_connections,
total_connections,
unique_users
) AS SELECTIF(accounts.host ISNULL, 'background', accounts.host) AS host,
SUM(stmt.total) AS statements,
SUM(stmt.total_latency) AS statement_latency,
SUM(stmt.total_latency) / SUM(stmt.total) AS statement_avg_latency,
SUM(stmt.full_scans) AS table_scans,
SUM(io.ios) AS file_ios,
SUM(io.io_latency) AS file_io_latency,
SUM(accounts.current_connections) AS current_connections,
SUM(accounts.total_connections) AS total_connections,
COUNT(DISTINCT accounts.user) AS unique_users FROM performance_schema.accounts LEFTJOIN sys.x$host_summary_by_statement_latency AS stmt ON accounts.host = stmt.host LEFTJOIN sys.x$host_summary_by_file_io AS io ON accounts.host = io.host GROUPBYIF(accounts.host ISNULL, 'background', accounts.host);
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