1. 當前啟用的連線數
select
* from
global_status
where
variable_name = 'threads_running';
select
* from
global_status
where
variable_name = 'threads_connected';
4.當前連線詳細資訊
select
* from
processlist
select
* from
global_status
where
variable_name = 'questions';
select
* from
global_status
where
variable_name = 'uptime';
select
1- ( select variable_value from global_status where variable_name = 'threads_created' ) / ( select variable_value from global_status where variable_name = 'connections' );
select
( select variable_value from global_status where variable_name = 'qcache_hits' ) /
(( select variable_value from global_status where variable_name = 'com_select' ) +
( select variable_value from global_status where variable_name = 'qcache_hits' )) as query_cache_rate;
select
(1-( select variable_value from global_status where variable_name = 'innodb_buffer_pool_reads' ) /
( select variable_value from global_status where variable_name = 'innodb_buffer_pool_read_requests' )) as inno_buff_hit;
select
(1-( select variable_value from global_status where variable_name = 'key_reads') /
( select variable_value from global_status where variable_name = 'key_read_requests' )) as key_buffer_read_hits;
select
(1-( select variable_value from global_status where variable_name = 'key_writes') /
( select variable_value from global_status where variable_name = 'key_write_requests' )) as key_buffer_write_hits;
select
(( select variable_value from global_status where variable_name = 'com_insert')+
( select variable_value from global_status where variable_name = 'com_select')+
( select variable_value from global_status where variable_name = 'com_delete')+
( select variable_value from global_status where variable_name = 'com_update')) as oper_fre
select (
(select
variable_value
from
global_status
where
variable_name = 'questions')
/ (select
variable_value
from
global_status
where
variable_name = 'uptime')
) as qps
select (
( (
select
variable_value
from
global_status
where
variable_name = 'com_commit'
) +
( select
variable_value
from
global_status
where
variable_name = 'com_rollback'
) )/ (
select
variable_value
from
global_status
where
variable_name = 'uptime'
)) as tps
select (
( select
variable_value
from
global_status
where
variable_name = 'created_tmp_disk_tables'
)/( select
variable_value
from
global_status
where
variable_name = 'created_tmp_tables'
)) as tmp_table_create
select
variable_value
from
global_status
where
variable_name = 'innodb_log_waits'
select (
( (
select
variable_value
from
global_status
where
variable_name = 'bytes_received'
) +
( select
variable_value
from
global_status
where
variable_name = 'bytes_sent'
) )/ (
select
variable_value
from
global_status
where
variable_name = 'uptime'
)) as flow
select
variable_value
from
global_status
where
variable_name = 'slow_queries'
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