WebSpin rounds per wait shows the number of spinlock rounds per OS wait for a mutex. LATEST FOREIGN KEY ERROR: Only shown if there has been a foreign key constraint error, it … WebThe Spin rounds per wait line shows the number of spinlock rounds per OS wait for a mutex. Mutex metrics are reported by SHOW ENGINE INNODB MUTEX. LATEST FOREIGN KEY …

SHOW ENGINE INNODB STATUS - MariaDB Knowledge Base

WebMar 14, 2011 · OS WAIT ARRAY INFO: reservation count 1510828, signal count 1927689 Mutex spin waits 64256205, rounds 98465742, OS waits 1460531 RW-shared spins 313695, rounds 1311507, OS waits 25333 RW-excl spins 32153, rounds 1546598, OS waits 20362 Spin rounds per wait: 1.53 mutex, 4.18 RW-shared, 48.10 RW-excl This is a full innodb … WebPer second averages calculated from the last 16 seconds ... OS WAIT ARRAY INFO: reservation count 555. OS WAIT ARRAY INFO: signal count 457. RW-shared spins 0, rounds 0, OS waits 0. RW-excl spins 0, rounds 0, OS waits 0. RW-sx spins 0, rounds 0, OS waits 0. Spin rounds per wait: 0.00 RW-shared, 0.00 RW-excl, 0.00 RW-sx-----TRANSACTIONS---- … can french people be blonde

How Many Times A Week Should I Spin? A Detailed Guide

WebMar 26, 2024 · One transaction holds a record lock that is a gap lock, but not waiting. Next transaction comes and asks immediately for a gap lock waiting lock. Then the first transaction comes to upgrading the lock , but can't as second transaction was first one in … WebThe Spin rounds per wait line shows the number of spinlock rounds per OS wait for a mutex. The Lock Monitor is the same as the Standard Monitor except that ... 12.22.3 Expression Handling WebThis makes sense because RDBMS are optimized to perform JOIN's as efficiently as possible, and the handling of lengthy IN lists will most likely be done by repeating the query for every value in the IN list. The performance issue you see could easily be explained by the simple fact of the query being run 5,000 times. Share Improve this answer fitbit inspire2 機能一覧