I have reviewed the whole of XtraDB where it acquires the buffer pool mutex (the mutex split makes such part much smaller than in InnoDB) and I don't see any causes for this. We need a way to reproduce this locally.
I have reviewed the whole of XtraDB where it acquires the buffer pool mutex (the mutex split makes such part much smaller than in InnoDB) and I don't see any causes for this. We need a way to reproduce this locally.