-- 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: user_summary -- -- Summarizes statement activity, file IO and connections by user. -- -- When the user found is NULL, it is assumed to be a "background" thread. -- -- mysql> select * from user_summary; -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ -- | user | statements | statement_latency | statement_avg_latency | table_scans | file_ios | file_io_latency | current_connections | total_connections | unique_hosts | -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ -- | root | 2924 | 00:03:59.53 | 81.92 ms | 82 | 54702 | 55.61 s | 1 | 1 | 1 | -- +------+------------+-------------------+-----------------------+-------------+----------+-----------------+---------------------+-------------------+--------------+ --
CREATEORREPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'mariadb.sys'@'localhost' SQL SECURITY INVOKER
VIEW user_summary (
user,
statements,
statement_latency,
statement_avg_latency,
table_scans,
file_ios,
file_io_latency,
current_connections,
total_connections,
unique_hosts
) AS SELECTIF(accounts.user ISNULL, 'background', accounts.user) AS user,
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 host) AS unique_hosts FROM performance_schema.accounts LEFTJOIN sys.x$user_summary_by_statement_latency AS stmt ONIF(accounts.user ISNULL, 'background', accounts.user) = stmt.user LEFTJOIN sys.x$user_summary_by_file_io AS io ONIF(accounts.user ISNULL, 'background', accounts.user) = io.user GROUPBYIF(accounts.user ISNULL, 'background', accounts.user);
Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-12)
¤
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