Information Schema INNODB_SYS_SEMAPHORE_WAITS Table

MariaDB starting with 10.1.3

The Information Schema INNODB_SYS_SEMAPHORE_WAITS table contains information about current semaphore waits.

The PROCESS privilege is required to view the table.

It contains the following columns:

ColumnDescription
THREAD_ID
OBJECT_NAME
FILE
LINE
WAIT_TIME
WAIT_OBJECT
WAIT_TYPE
HOLDER_THREAD_ID
HOLDER_FILE
HOLDER_LINE
CREATED_FILE
CREATED_LINE
WRITER_THREAD
RESERVATION_MODE
READERS
WAITERS_FLAG
LOCK_WORD
LAST_READER_FILE
LAST_READER_LINE
LAST_WRITER_FILE
LAST_WRITER_LINE
OS_WAIT_COUNT

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