Buffer Pool •You can configure how  InnoDB  preserves the current buffer pool state to avoid a lengthy warmup period after a server restart. For details, see Section 15.8.3.6, “Saving and Restoring the Buffer Pool State” . Table 15.2 InnoDB Buffer Pool Metrics 3009 Name Description Total memory allocated The total memory allocated for the buffer pool in bytes. Dictionary memory allocated The total memory allocated for the  InnoDB  data dictionary in bytes. Buffer pool size The total size in pages allocated to the buffer pool. Free buffers The total size in pages of the buffer pool free list. Database pages The total size in pages of the buffer pool LRU list. Old database pages The total size in pages of the buffer pool old LRU sublist. Modified db pages The current number of pages modified in the buffer pool. Pending reads The number of buffer pool pages waiting to be read into the buffer pool. Pending writes LRU The number of old dirty pages within the buffer pool to be written from the bottom of the LRU list. The following table describes buffer pool metrics reported by the  InnoDB  Standard Monitor. Per second averages provided in  InnoDB  Standard Monitor output are based on the elapsed time since InnoDB  Standard Monitor output was last printed. InnoDB  Standard Monitor output, which can be accessed using  SHOW ENGINE INNODB STATUS , provides metrics regarding operation of the buffer pool. Buffer pool metrics are located in the  BUFFER POOL AND MEMORY  section of  InnoDB  Standard Monitor output: Monitoring the Buffer Pool Using the InnoDB Standard Monitor ---------------------- BUFFER POOL AND MEMORY ---------------------- Total large memory allocated 2198863872 Dictionary memory allocated 776332 Buffer pool size 131072 Free buffers 124908 Database pages 5720 Old database pages 2071 Modified db pages 910 Pending reads 0 Pending writes: LRU 0, flush list 0, single page 0 Pages made young 4, not young 0 0.10 youngs/s, 0.00 non-youngs/s Pages read 197, created 5523, written 5060 0.00 reads/s, 190.89 creates/s, 244.94 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 0.00/s, Random read ahead 0.00/s LRU len: 5720, unzip_LRU len: 0 I/O sum[0]:cur[0], unzip sum[0]:cur[0]