mysql> show innodb status \g
+——–+——+————————————————-+
| Type | Name | Status
+——–+——+————————————————-+
| InnoDB | |
=====================================
090206 9:00:16 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 56 seconds
———-
SEMAPHORES
———-
OS WAIT ARRAY INFO: reservation count 6, signal count 6
Mutex spin waits 0, rounds 340, OS waits 0
RW-shared spins 13, OS waits 6; RW-excl spins 1, OS waits 0
————
TRANSACTIONS
————
Trx id counter 0 1817
Purge done for trx’s n:o < 0 1814 undo n:o < 0 0 History list length 4 Total number of lock structs in row lock hash table 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 0 0, not started, process no 31575, OS thread id 8362912 MySQL thread id 1998, query id 98281 localhost root show innodb status -------- FILE I/O -------- I/O thread 0 state: waiting for i/o request (insert buffer thread) I/O thread 1 state: waiting for i/o request (log thread) I/O thread 2 state: waiting for i/o request (read thread) I/O thread 3 state: waiting for i/o request (write thread) Pending normal aio reads: 0, aio writes: 0, ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0 Pending flushes (fsync) log: 0; buffer pool: 0 28 OS file reads, 37 OS file writes, 28 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 0 inserts, 0 merged recs, 0 merges Hash table size 34679, used cells 0, node heap has 1 buffer(s) 0.00 hash searches/s, 0.00 non-hash searches/s --- LOG --- Log sequence number 0 74422 Log flushed up to 0 74422 Last checkpoint at 0 74422 0 pending log writes, 0 pending chkp writes 23 log i/o's done, 0.00 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total memory allocated 17444756; in additional pool allocated 876160 Dictionary memory allocated 28616 Buffer pool size 512 Free buffers 488 Database pages 23 Modified db pages 0 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages read 22, created 1, written 21 0.00 reads/s, 0.00 creates/s, 0.00 writes/s No buffer pool page gets since the last printout -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 1 read views open inside InnoDB Main thread process no. 31575, id 113028000, state: waiting for server activity Number of rows inserted 3, updated 1, deleted 0, read 32 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================ | +--------+------+------------------------------------------------+ 1 row in set, 1 warning (0.00 sec) mysql>

mysql> show engine innodb status \g
+——–+——+————————————————+
| Type | Name | Status
+——–+——+————————————————+
| InnoDB | |
=====================================
090206 9:01:09 INNODB MONITOR OUTPUT
=====================================
Per second averages calculated from the last 3 seconds
———-
SEMAPHORES
———-
OS WAIT ARRAY INFO: reservation count 6, signal count 6
Mutex spin waits 0, rounds 340, OS waits 0
RW-shared spins 13, OS waits 6; RW-excl spins 1, OS waits 0
————
TRANSACTIONS
————
Trx id counter 0 1817
Purge done for trx’s n:o < 0 1814 undo n:o < 0 0 History list length 4 Total number of lock structs in row lock hash table 0 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 0 0, not started, process no 31575, OS thread id 8362912 MySQL thread id 1998, query id 98284 localhost root show engine innodb status -------- FILE I/O -------- I/O thread 0 state: waiting for i/o request (insert buffer thread) I/O thread 1 state: waiting for i/o request (log thread) I/O thread 2 state: waiting for i/o request (read thread) I/O thread 3 state: waiting for i/o request (write thread) Pending normal aio reads: 0, aio writes: 0, ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0 Pending flushes (fsync) log: 0; buffer pool: 0 28 OS file reads, 37 OS file writes, 28 OS fsyncs 0.00 reads/s, 0 avg bytes/read, 0.00 writes/s, 0.00 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 0 inserts, 0 merged recs, 0 merges Hash table size 34679, used cells 0, node heap has 1 buffer(s) 0.00 hash searches/s, 0.00 non-hash searches/s --- LOG --- Log sequence number 0 74422 Log flushed up to 0 74422 Last checkpoint at 0 74422 0 pending log writes, 0 pending chkp writes 23 log i/o's done, 0.00 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total memory allocated 17444756; in additional pool allocated 876160 Dictionary memory allocated 28616 Buffer pool size 512 Free buffers 488 Database pages 23 Modified db pages 0 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages read 22, created 1, written 21 0.00 reads/s, 0.00 creates/s, 0.00 writes/s No buffer pool page gets since the last printout -------------- ROW OPERATIONS -------------- 0 queries inside InnoDB, 0 queries in queue 1 read views open inside InnoDB Main thread process no. 31575, id 113028000, state: waiting for server activity Number of rows inserted 3, updated 1, deleted 0, read 32 0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================ | +--------+------+--------------------------------------------------+ 1 row in set (0.01 sec) mysql>

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