-- 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: 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 host_summary; -- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+ -- | host | statements | total_latency | avg_latency | current_connections | total_connections | unique_users | current_memory | total_memory_allocated | -- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+ -- | hal1 | 5663 | 00:01:47.14 | 18.92 ms | 1 | 1 | 1 | 1.41 MiB | 543.55 MiB | -- | hal2 | 225 | 14.49 s | 64.40 ms | 1 | 1 | 1 | 707.60 KiB | 81.02 MiB | -- +------+------------+---------------+-------------+---------------------+-------------------+--------------+----------------+------------------------+ --
CREATEORREPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'mariadb.sys'@'localhost' SQL SECURITY INVOKER
VIEW 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 SELECTIF(accounts.host ISNULL, 'background', accounts.host) AS host,
SUM(stmt.total) AS statements,
format_pico_time(SUM(stmt.total_latency)) AS statement_latency,
format_pico_time(IFNULL(SUM(stmt.total_latency) / NULLIF(SUM(stmt.total), 0), 0)) AS statement_avg_latency,
SUM(stmt.full_scans) AS table_scans,
SUM(io.ios) AS file_ios,
format_pico_time(SUM(io.io_latency)) AS file_io_latency,
SUM(accounts.current_connections) AS current_connections,
SUM(accounts.total_connections) AS total_connections,
COUNT(DISTINCT user) AS unique_users,
format_bytes(SUM(mem.current_allocated)) AS current_memory,
format_bytes(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 GROUPBYIF(accounts.host ISNULL, 'background', accounts.host);
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