show engine innodb status\G *************************** 1. row *************************** Type: InnoDB Name: Status: ===================================== 120423 13:10:21 INNODB MONITOR OUTPUT ===================================== Per second averages calculated from the last 19 seconds ----------------- BACKGROUND THREAD ----------------- srv_master_thread loops: 2690801 1_second, 2690569 sleeps, 269052 10_second, 872 background, 872 flush srv_master_thread log flush and writes: 2751959 ---------- SEMAPHORES ---------- OS WAIT ARRAY INFO: reservation count 7594256, signal count 3456272 Mutex spin waits 58334318, rounds 437274722, OS waits 7010478 RW-shared spins 310054, rounds 9214982, OS waits 304281 RW-excl spins 109163, rounds 6727671, OS waits 201608 Spin rounds per wait: 7.50 mutex, 29.72 RW-shared, 61.63 RW-excl ------------ TRANSACTIONS ------------ Trx id counter 9BB21B60 Purge done for trx's n:o < 9BB1C61D undo n:o < 0 History list length 3080 LIST OF TRANSACTIONS FOR EACH SESSION: ---TRANSACTION 0, not started MySQL thread id 2302843, OS thread handle 0x2ab0109f1940, query id 2846788868 localhost root show engine innodb status ---TRANSACTION 9BB21AD6, not started MySQL thread id 2302847, OS thread handle 0x7ef76940, query id 2846788712 192.168.71.196 ... -------- FILE I/O -------- I/O thread 0 state: waiting for completed aio requests (insert buffer thread) I/O thread 1 state: waiting for completed aio requests (log thread) I/O thread 2 state: waiting for completed aio requests (read thread) I/O thread 3 state: waiting for completed aio requests (read thread) I/O thread 4 state: waiting for completed aio requests (read thread) I/O thread 5 state: waiting for completed aio requests (read thread) I/O thread 6 state: waiting for completed aio requests (read thread) I/O thread 7 state: waiting for completed aio requests (read thread) I/O thread 8 state: waiting for completed aio requests (read thread) I/O thread 9 state: waiting for completed aio requests (read thread) I/O thread 10 state: waiting for completed aio requests (write thread) I/O thread 11 state: waiting for completed aio requests (write thread) I/O thread 12 state: waiting for completed aio requests (write thread) I/O thread 13 state: waiting for completed aio requests (write thread) I/O thread 14 state: waiting for completed aio requests (write thread) I/O thread 15 state: waiting for completed aio requests (write thread) I/O thread 16 state: waiting for completed aio requests (write thread) I/O thread 17 state: waiting for completed aio requests (write thread) Pending normal aio reads: 0 [0, 0, 0, 0, 0, 0, 0, 0] , aio writes: 0 [0, 0, 0, 0, 0, 0, 0, 0] , ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0 Pending flushes (fsync) log: 0; buffer pool: 0 1171232 OS file reads, 543668918 OS file writes, 467345880 OS fsyncs 0 pending preads, 1 pending pwrites 9.84 reads/s, 16384 avg bytes/read, 445.92 writes/s, 415.24 fsyncs/s ------------------------------------- INSERT BUFFER AND ADAPTIVE HASH INDEX ------------------------------------- Ibuf: size 1, free list len 0, seg size 2, 70 merges merged operations: insert 70, delete mark 0, delete 0 discarded operations: insert 0, delete mark 0, delete 0 Hash table size 38249423, node heap has 1930 buffer(s) 234.15 hash searches/s, 9252.99 non-hash searches/s --- LOG --- Log sequence number 149855387231 Log flushed up to 149855386658 Last checkpoint at 148849628188 1 pending log writes, 0 pending chkp writes 394159894 log i/o's done, 397.45 log i/o's/second ---------------------- BUFFER POOL AND MEMORY ---------------------- Total memory allocated 19780337664; in additional pool allocated 0 Dictionary memory allocated 6338430 Buffer pool size 1179640 Free buffers 2 Database pages 1177708 Old database pages 434576 Modified db pages 184271 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 7255023, not young 0 58.94 youngs/s, 0.00 non-youngs/s Pages read 1171219, created 1606691, written 136519953 9.84 reads/s, 1.79 creates/s, 39.84 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 1.21/s, Random read ahead 0.00/s LRU len: 1177708, unzip_LRU len: 0 I/O sum[19280]:cur[24], unzip sum[0]:cur[0] ---------------------- INDIVIDUAL BUFFER POOL INFO ---------------------- ---BUFFER POOL 0 Buffer pool size 147455 Free buffers 0 Database pages 147217 Old database pages 54323 Modified db pages 22463 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 913187, not young 0 5.32 youngs/s, 0.00 non-youngs/s Pages read 147684, created 200643, written 17122416 1.47 reads/s, 0.21 creates/s, 5.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.11/s, Random read ahead 0.00/s LRU len: 147217, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 1 Buffer pool size 147455 Free buffers 0 Database pages 147213 Old database pages 54322 Modified db pages 22882 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 824498, not young 0 6.32 youngs/s, 0.00 non-youngs/s Pages read 132053, created 199428, written 16399318 1.74 reads/s, 0.26 creates/s, 5.10 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.26/s, Random read ahead 0.00/s LRU len: 147213, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 2 Buffer pool size 147455 Free buffers 0 Database pages 147214 Old database pages 54322 Modified db pages 23605 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 949553, not young 0 13.42 youngs/s, 0.00 non-youngs/s Pages read 155467, created 201986, written 16513505 1.37 reads/s, 0.21 creates/s, 4.84 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 2 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s LRU len: 147214, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 3 Buffer pool size 147455 Free buffers 0 Database pages 147212 Old database pages 54321 Modified db pages 24429 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 1025680, not young 0 5.63 youngs/s, 0.00 non-youngs/s Pages read 169811, created 202659, written 18076989 0.68 reads/s, 0.16 creates/s, 4.89 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.16/s, Random read ahead 0.00/s LRU len: 147212, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 4 Buffer pool size 147455 Free buffers 0 Database pages 147216 Old database pages 54323 Modified db pages 22485 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 860668, not young 0 8.74 youngs/s, 0.00 non-youngs/s Pages read 137056, created 199993, written 17624578 1.11 reads/s, 0.26 creates/s, 5.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.11/s, Random read ahead 0.00/s LRU len: 147216, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 5 Buffer pool size 147455 Free buffers 0 Database pages 147213 Old database pages 54322 Modified db pages 22643 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 882281, not young 0 7.10 youngs/s, 0.00 non-youngs/s Pages read 140311, created 200402, written 16982034 1.32 reads/s, 0.16 creates/s, 5.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.16/s, Random read ahead 0.00/s LRU len: 147213, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 6 Buffer pool size 147455 Free buffers 2 Database pages 147213 Old database pages 54322 Modified db pages 22681 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 878086, not young 0 7.16 youngs/s, 0.00 non-youngs/s Pages read 138853, created 200804, written 17115928 0.84 reads/s, 0.26 creates/s, 5.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 1 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.21/s, Random read ahead 0.00/s LRU len: 147213, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] ---BUFFER POOL 7 Buffer pool size 147455 Free buffers 0 Database pages 147210 Old database pages 54321 Modified db pages 23083 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 921070, not young 0 5.26 youngs/s, 0.00 non-youngs/s Pages read 149984, created 200776, written 16685185 1.32 reads/s, 0.26 creates/s, 5.00 writes/s Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000 Pages read ahead 0.00/s, evicted without access 0.21/s, Random read ahead 0.00/s LRU len: 147210, unzip_LRU len: 0 I/O sum[2410]:cur[3], unzip sum[0]:cur[0] -------------- ROW OPERATIONS -------------- 12 queries inside InnoDB, 0 queries in queue 2 read views open inside InnoDB Main thread process no. 31603, id 1280207168, state: sleeping Number of rows inserted 119870978, updated 154261157, deleted 7205112, read 5714925847 118.63 inserts/s, 181.67 updates/s, 7.21 deletes/s, 6594.07 reads/s ---------------------------- END OF INNODB MONITOR OUTPUT ============================ 1 row in set (0.02 sec)