Hello, I am counter-checking the mysqlreport "fork" i am maintening (https://mariadb.atlassian.net/browse/MDEV-573) so it could be included in Maria 10 before GA, i am actually unsure that i am checking correctly the Threadpool usage. For these stats (with thread_pool_max_threads=1200 and thread_handling=pool-of-threads) : +------------------------------------------+---------+ | Variable_name | Value | +------------------------------------------+---------+ | Threadpool_idle_threads | 47 | | Threadpool_threads | 52 | | Threads_cached | 0 | | Threads_connected | 19 | | Threads_created | 599771 | | Threads_running | 6 | +------------------------------------------+---------+ The actual output is : __ Threads ___________________________________________ Running 6 of 24 Created 599.77k 0.2/s Slow 0 0/s Threadpool 98 of 1200 %Used: 8.17 Running 52 of 1200 %Running: 4.33 Idle 46 of 1200 %Idle: 3.83 The formulae used are : Threadpool $stats{'Threadpool_threads'} + $stats{'Threadpool_idle_threads'}) of $vars{'thread_pool_max_threads'} %Used: percentage( ($stats{'Threadpool_threads'} + $stats{'Threadpool_idle_threads'}) / $vars{'thread_pool_max_threads'} Running $stats{'Threadpool_threads'} of $vars{'thread_pool_max_threads'} %Running: percentage($stats{'Threadpool_threads'} / $vars{'thread_pool_max_threads'}) Idle $stats{'Threadpool_idle_threads'} of $vars{'thread_pool_max_threads'} %Idle: percentage($stats{'Threadpool_idle_threads'} / $vars{'thread_pool_max_threads'}) Is the Threadpool usage calculation right or should only the Threadpool_threads status be used? What is the meaning of the Threads_connected value when the threadpool is used? Regards.