Synchronization primitive that realizes mutual exclusion of critical sections.
Synchronization mechanism for enforcing limits on access to a resource.
Property of concurrency control, which is instituted for the purpose of preventing race conditions.
1The number of times the mutex waited on the operating system
2How many times InnoDB chose to spin-wait for the mutex to be free.
3The amount of time the mutex waited for the operating system
4How many times InnoDB checked whether the mutex was free in a spin wait.
5How many times InnoDB fell back to an operating system wait for the mutex.
6The number of times the mutex was requested
7This attempt returned success immediately, so this thread now has a lock on that named mutex.
8How many times something has requested the mutex.
9The source file where the mutex is defined.
10How many times the thread waiting for the mutex yielded to the operating system so another thread could run.
11The problem is that this single row is effectively a global "mutex" for any transaction that updates the counter.
12It also needs efficient synchronization primitives, such as mutexes.
13The number of times the mutex waited on the operating system
14How many times InnoDB chose to spin-wait for the mutex to be free.
15The amount of time the mutex waited for the operating system
16How many times InnoDB checked whether the mutex was free in a spin wait.