host_summary
This page is part of MariaDB's Documentation.
The parent of this page is: Sys Database Tables for MariaDB Enterprise Server
Topics on this page:
Overview
In 11.4 ES:
A description for this sys Table has not yet been added to this Documentation.
DETAILS
SCHEMA
VIEW `host_summary` AS SELECT
if(`performance_schema`.`accounts`.`HOST` is null,'background',`performance_schema`.`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(`performance_schema`.`accounts`.`CURRENT_CONNECTIONS`) AS `current_connections`,
sum(`performance_schema`.`accounts`.`TOTAL_CONNECTIONS`) AS `total_connections`,
count(distinct `performance_schema`.`accounts`.`USER`) AS `unique_users`,
`sys`.`format_bytes`(sum(`mem`.`current_allocated`)) AS `current_memory`,
`sys`.`format_bytes`(sum(`mem`.`total_allocated`)) AS `total_memory_allocated`
FROM (((`performance_schema`.`accounts` join `sys`.`x$host_summary_by_statement_latency` `stmt` on(`performance_schema`.`accounts`.`HOST` = `stmt`.`host`)) join `sys`.`x$host_summary_by_file_io` `io` on(`performance_schema`.`accounts`.`HOST` = `io`.`host`)) join `sys`.`x$memory_by_host_by_current_bytes` `mem` on(`performance_schema`.`accounts`.`HOST` = `mem`.`host`)) group by if(`performance_schema`.`accounts`.`HOST` is null,'background',`performance_schema`.`accounts`.`HOST`)