diff options
Diffstat (limited to 'storage/innobase/include/buf0buf.h')
| -rw-r--r-- | storage/innobase/include/buf0buf.h | 47 |
1 files changed, 39 insertions, 8 deletions
diff --git a/storage/innobase/include/buf0buf.h b/storage/innobase/include/buf0buf.h index d83d484bace..ccebb69a4fe 100644 --- a/storage/innobase/include/buf0buf.h +++ b/storage/innobase/include/buf0buf.h @@ -147,6 +147,8 @@ struct buf_pool_info_struct{ ulint n_pages_created; /*!< buf_pool->n_pages_created */ ulint n_pages_written; /*!< buf_pool->n_pages_written */ ulint n_page_gets; /*!< buf_pool->n_page_gets */ + ulint n_ra_pages_read_rnd; /*!< buf_pool->n_ra_pages_read_rnd, + number of pages readahead */ ulint n_ra_pages_read; /*!< buf_pool->n_ra_pages_read, number of pages readahead */ ulint n_ra_pages_evicted; /*!< buf_pool->n_ra_pages_evicted, @@ -171,6 +173,8 @@ struct buf_pool_info_struct{ last printout */ /* Statistics about read ahead algorithm. */ + double pages_readahead_rnd_rate;/*!< random readahead rate in pages per + second */ double pages_readahead_rate; /*!< readahead rate in pages per second */ double pages_evicted_rate; /*!< rate of readahead page evicted @@ -246,12 +250,6 @@ buf_relocate( BUF_BLOCK_ZIP_DIRTY or BUF_BLOCK_ZIP_PAGE */ buf_page_t* dpage) /*!< in/out: destination control block */ __attribute__((nonnull)); -/********************************************************************//** -Resizes the buffer pool. */ -UNIV_INTERN -void -buf_pool_resize(void); -/*=================*/ /*********************************************************************//** Gets the current size of buffer buf_pool in bytes. @return size in bytes */ @@ -275,6 +273,23 @@ ib_uint64_t buf_pool_get_oldest_modification(void); /*==================================*/ /********************************************************************//** +Allocates a buf_page_t descriptor. This function must succeed. In case +of failure we assert in this function. */ +UNIV_INLINE +buf_page_t* +buf_page_alloc_descriptor(void) +/*===========================*/ + __attribute__((malloc)); +/********************************************************************//** +Free a buf_page_t descriptor. */ +UNIV_INLINE +void +buf_page_free_descriptor( +/*=====================*/ + buf_page_t* bpage) /*!< in: bpage descriptor to free. */ + __attribute__((nonnull)); + +/********************************************************************//** Allocates a buffer block. @return own: the allocated block, in state BUF_BLOCK_MEMORY */ UNIV_INTERN @@ -531,6 +546,18 @@ buf_block_get_freed_page_clock( __attribute__((pure)); /********************************************************************//** +Tells if a block is still close enough to the MRU end of the LRU list +meaning that it is not in danger of getting evicted and also implying +that it has been accessed recently. +Note that this is for heuristics only and does not reserve buffer pool +mutex. +@return TRUE if block is close to MRU end of LRU */ +UNIV_INLINE +ibool +buf_page_peek_if_young( +/*===================*/ + const buf_page_t* bpage); /*!< in: block */ +/********************************************************************//** Recommends a move of a block to the start of the LRU list if there is danger of dropping from the buffer pool. NOTE: does not reserve the buffer pool mutex. @@ -1196,7 +1223,7 @@ ulint buf_get_free_list_len(void); /*=======================*/ -/******************************************************************** +/********************************************************************//** Determine if a block is a sentinel for a buffer pool watch. @return TRUE if a sentinel for a buffer pool watch, FALSE if not */ UNIV_INTERN @@ -1569,6 +1596,8 @@ struct buf_pool_stat_struct{ ulint n_pages_written;/*!< number write operations */ ulint n_pages_created;/*!< number of pages created in the pool with no read */ + ulint n_ra_pages_read_rnd;/*!< number of pages read in + as part of random read ahead */ ulint n_ra_pages_read;/*!< number of pages read in as part of read ahead */ ulint n_ra_pages_evicted;/*!< number of read ahead @@ -1708,7 +1737,7 @@ struct buf_pool_struct{ UT_LIST_BASE_NODE_T(buf_page_t) LRU; /*!< base node of the LRU list */ buf_page_t* LRU_old; /*!< pointer to the about - buf_LRU_old_ratio/BUF_LRU_OLD_RATIO_DIV + LRU_old_ratio/BUF_LRU_OLD_RATIO_DIV oldest blocks in the LRU list; NULL if LRU length less than BUF_LRU_OLD_MIN_LEN; @@ -1732,8 +1761,10 @@ struct buf_pool_struct{ frames and buf_page_t descriptors of blocks that exist in the buffer pool only in compressed form. */ /* @{ */ +#if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG UT_LIST_BASE_NODE_T(buf_page_t) zip_clean; /*!< unmodified compressed pages */ +#endif /* UNIV_DEBUG || UNIV_BUF_DEBUG */ UT_LIST_BASE_NODE_T(buf_page_t) zip_free[BUF_BUDDY_SIZES]; /*!< buddy free lists */ |