diff --git a/btr/btr0sea.c b/btr/btr0sea.c index faa1c13897e..0a80c61a58d 100644 --- a/btr/btr0sea.c +++ b/btr/btr0sea.c @@ -957,7 +957,7 @@ btr_search_guess_on_hash( /* Increment the page get statistics though we did not really fix the page: for user info only */ - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; return(TRUE); diff --git a/buf/buf0buf.c b/buf/buf0buf.c index b7e7ec0dbb6..0d0269ede91 100644 --- a/buf/buf0buf.c +++ b/buf/buf0buf.c @@ -1622,7 +1622,7 @@ buf_page_get_zip( #ifndef UNIV_LOG_DEBUG ut_ad(!ibuf_inside()); #endif - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; for (;;) { buf_pool_mutex_enter(); @@ -1991,7 +1991,7 @@ buf_page_get_gen( #ifndef UNIV_LOG_DEBUG ut_ad(!ibuf_inside() || ibuf_page(space, zip_size, offset, NULL)); #endif - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; loop: block = guess; buf_pool_mutex_enter(); @@ -2410,7 +2410,7 @@ buf_page_optimistic_get_func( ut_a(ibuf_count_get(buf_block_get_space(block), buf_block_get_page_no(block)) == 0); #endif - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; return(TRUE); } @@ -2504,7 +2504,7 @@ buf_page_get_known_nowait( || (ibuf_count_get(buf_block_get_space(block), buf_block_get_page_no(block)) == 0)); #endif - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; return(TRUE); } @@ -2580,7 +2580,7 @@ buf_page_try_get_func( #endif /* UNIV_DEBUG_FILE_ACCESSES */ buf_block_dbg_add_level(block, SYNC_NO_ORDER_CHECK); - buf_pool->n_page_gets++; + buf_pool->stat.n_page_gets++; #ifdef UNIV_IBUF_COUNT_DEBUG ut_a(ibuf_count_get(buf_block_get_space(block), @@ -2944,7 +2944,7 @@ buf_page_create( buf_LRU_add_block(&block->page, FALSE); buf_block_buf_fix_inc(block, __FILE__, __LINE__); - buf_pool->n_pages_created++; + buf_pool->stat.n_pages_created++; if (zip_size) { void* data; @@ -3192,7 +3192,7 @@ corrupt: ut_ad(buf_pool->n_pend_reads > 0); buf_pool->n_pend_reads--; - buf_pool->n_pages_read++; + buf_pool->stat.n_pages_read++; if (uncompressed) { rw_lock_x_unlock_gen(&((buf_block_t*) bpage)->lock, @@ -3212,7 +3212,7 @@ corrupt: BUF_IO_WRITE); } - buf_pool->n_pages_written++; + buf_pool->stat.n_pages_written++; break; @@ -3530,10 +3530,11 @@ buf_print(void) (ulong) buf_pool->n_flush[BUF_FLUSH_LRU], (ulong) buf_pool->n_flush[BUF_FLUSH_LIST], (ulong) buf_pool->n_flush[BUF_FLUSH_SINGLE_PAGE], - (ulong) buf_pool->n_pages_made_young, - (ulong) buf_pool->n_pages_not_made_young, - (ulong) buf_pool->n_pages_read, buf_pool->n_pages_created, - (ulong) buf_pool->n_pages_written); + (ulong) buf_pool->stat.n_pages_made_young, + (ulong) buf_pool->stat.n_pages_not_made_young, + (ulong) buf_pool->stat.n_pages_read, + (ulong) buf_pool->stat.n_pages_created, + (ulong) buf_pool->stat.n_pages_written); /* Count the number of blocks belonging to each index in the buffer */ @@ -3767,61 +3768,66 @@ buf_print_io( current_time = time(NULL); time_elapsed = 0.001 + difftime(current_time, buf_pool->last_printout_time); - buf_pool->last_printout_time = current_time; fprintf(file, "Pages made young %lu, not young %lu\n" "%.2f youngs/s, %.2f non-youngs/s\n" "Pages read %lu, created %lu, written %lu\n" "%.2f reads/s, %.2f creates/s, %.2f writes/s\n", - (ulong) buf_pool->n_pages_made_young, - (ulong) buf_pool->n_pages_not_made_young, - (buf_pool->n_pages_made_young - - buf_pool->n_pages_made_young_old) + (ulong) buf_pool->stat.n_pages_made_young, + (ulong) buf_pool->stat.n_pages_not_made_young, + (buf_pool->stat.n_pages_made_young + - buf_pool->old_stat.n_pages_made_young) / time_elapsed, - (buf_pool->n_pages_not_made_young - - buf_pool->n_pages_not_made_young_old) + (buf_pool->stat.n_pages_not_made_young + - buf_pool->old_stat.n_pages_not_made_young) / time_elapsed, - (ulong) buf_pool->n_pages_read, - (ulong) buf_pool->n_pages_created, - (ulong) buf_pool->n_pages_written, - (buf_pool->n_pages_read - buf_pool->n_pages_read_old) + (ulong) buf_pool->stat.n_pages_read, + (ulong) buf_pool->stat.n_pages_created, + (ulong) buf_pool->stat.n_pages_written, + (buf_pool->stat.n_pages_read + - buf_pool->old_stat.n_pages_read) / time_elapsed, - (buf_pool->n_pages_created - buf_pool->n_pages_created_old) + (buf_pool->stat.n_pages_created + - buf_pool->old_stat.n_pages_created) / time_elapsed, - (buf_pool->n_pages_written - buf_pool->n_pages_written_old) + (buf_pool->stat.n_pages_written + - buf_pool->old_stat.n_pages_written) / time_elapsed); - n_gets_diff = buf_pool->n_page_gets - buf_pool->n_page_gets_old; + n_gets_diff = buf_pool->stat.n_page_gets - buf_pool->old_stat.n_page_gets; if (n_gets_diff) { fprintf(file, "Buffer pool hit rate %lu / 1000," " young-making rate %lu / 1000 not %lu / 1000\n", (ulong) - (1000 - ((1000 * (buf_pool->n_pages_read - - buf_pool->n_pages_read_old)) - / n_gets_diff)), + (1000 - ((1000 * (buf_pool->stat.n_pages_read + - buf_pool->old_stat.n_pages_read)) + / (buf_pool->stat.n_page_gets + - buf_pool->old_stat.n_page_gets))), (ulong) - (1000 * (buf_pool->n_pages_made_young - - buf_pool->n_pages_made_young_old) + (1000 * (buf_pool->stat.n_pages_made_young + - buf_pool->old_stat.n_pages_made_young) / n_gets_diff), (ulong) - (1000 * (buf_pool->n_pages_not_made_young - - buf_pool->n_pages_not_made_young_old) + (1000 * (buf_pool->stat.n_pages_not_made_young + - buf_pool->old_stat.n_pages_not_made_young) / n_gets_diff)); } else { fputs("No buffer pool page gets since the last printout\n", file); } - buf_pool->n_page_gets_old = buf_pool->n_page_gets; - buf_pool->n_pages_made_young_old = buf_pool->n_pages_made_young; - buf_pool->n_pages_not_made_young_old - = buf_pool->n_pages_not_made_young; - buf_pool->n_pages_read_old = buf_pool->n_pages_read; - buf_pool->n_pages_created_old = buf_pool->n_pages_created; - buf_pool->n_pages_written_old = buf_pool->n_pages_written; + /* Statistics about read ahead algorithm */ + fprintf(file, "Pages read ahead %.2f/s," + " evicted without access %.2f/s\n", + (buf_pool->stat.n_ra_pages_read + - buf_pool->old_stat.n_ra_pages_read) + / time_elapsed, + (buf_pool->stat.n_ra_pages_evicted + - buf_pool->old_stat.n_ra_pages_evicted) + / time_elapsed); /* Print some values to help us with visualizing what is happening with LRU eviction. */ @@ -3833,6 +3839,7 @@ buf_print_io( buf_LRU_stat_sum.io, buf_LRU_stat_cur.io, buf_LRU_stat_sum.unzip, buf_LRU_stat_cur.unzip); + buf_refresh_io_stats(); buf_pool_mutex_exit(); } @@ -3844,10 +3851,7 @@ buf_refresh_io_stats(void) /*======================*/ { buf_pool->last_printout_time = time(NULL); - buf_pool->n_page_gets_old = buf_pool->n_page_gets; - buf_pool->n_pages_read_old = buf_pool->n_pages_read; - buf_pool->n_pages_created_old = buf_pool->n_pages_created; - buf_pool->n_pages_written_old = buf_pool->n_pages_written; + buf_pool->old_stat = buf_pool->stat; } /*********************************************************************//** diff --git a/buf/buf0lru.c b/buf/buf0lru.c index 7d09786a7c8..223746e0d01 100644 --- a/buf/buf0lru.c +++ b/buf/buf0lru.c @@ -576,6 +576,7 @@ buf_LRU_free_from_common_LRU_list( bpage = UT_LIST_GET_PREV(LRU, bpage), distance--) { enum buf_lru_free_block_status freed; + unsigned accessed; mutex_t* block_mutex = buf_page_get_mutex(bpage); @@ -583,11 +584,18 @@ buf_LRU_free_from_common_LRU_list( ut_ad(bpage->in_LRU_list); mutex_enter(block_mutex); + accessed = buf_page_is_accessed(bpage); freed = buf_LRU_free_block(bpage, TRUE, NULL); mutex_exit(block_mutex); switch (freed) { case BUF_LRU_FREED: + /* Keep track of pages that are evicted without + ever being accessed. This gives us a measure of + the effectiveness of readahead */ + if (!accessed) { + ++buf_pool->stat.n_ra_pages_evicted; + } return(TRUE); case BUF_LRU_NOT_FREED: @@ -1270,7 +1278,7 @@ buf_LRU_make_block_young( buf_page_t* bpage) /*!< in: control block */ { ut_ad(buf_pool_mutex_own()); - buf_pool->n_pages_made_young++; + buf_pool->stat.n_pages_made_young++; buf_LRU_remove_block(bpage); buf_LRU_add_block_low(bpage, FALSE); diff --git a/buf/buf0rea.c b/buf/buf0rea.c index eb09b469748..897f73f2efe 100644 --- a/buf/buf0rea.c +++ b/buf/buf0rea.c @@ -489,7 +489,7 @@ buf_read_ahead_linear( LRU policy decision. */ buf_LRU_stat_inc_io(); - ++srv_read_ahead_seq; + buf_pool->stat.n_ra_pages_read += count; return(count); } diff --git a/handler/ha_innodb.cc b/handler/ha_innodb.cc index 55cecb18688..98b6c85b441 100644 --- a/handler/ha_innodb.cc +++ b/handler/ha_innodb.cc @@ -500,10 +500,10 @@ static SHOW_VAR innodb_status_variables[]= { (char*) &export_vars.innodb_buffer_pool_pages_misc, SHOW_LONG}, {"buffer_pool_pages_total", (char*) &export_vars.innodb_buffer_pool_pages_total, SHOW_LONG}, - {"buffer_pool_read_ahead_rnd", - (char*) &export_vars.innodb_buffer_pool_read_ahead_rnd, SHOW_LONG}, - {"buffer_pool_read_ahead_seq", - (char*) &export_vars.innodb_buffer_pool_read_ahead_seq, SHOW_LONG}, + {"buffer_pool_read_ahead", + (char*) &export_vars.innodb_buffer_pool_read_ahead, SHOW_LONG}, + {"buffer_pool_read_ahead_evicted", + (char*) &export_vars.innodb_buffer_pool_read_ahead_evicted, SHOW_LONG}, {"buffer_pool_read_requests", (char*) &export_vars.innodb_buffer_pool_read_requests, SHOW_LONG}, {"buffer_pool_reads", diff --git a/include/buf0buf.h b/include/buf0buf.h index a1ab262b5d6..299312e5d10 100644 --- a/include/buf0buf.h +++ b/include/buf0buf.h @@ -1284,6 +1284,31 @@ Compute the hash fold value for blocks in buf_pool->zip_hash. */ #define BUF_POOL_ZIP_FOLD_BPAGE(b) BUF_POOL_ZIP_FOLD((buf_block_t*) (b)) /* @} */ +/** @brief The buffer pool statistics structure. */ +struct buf_pool_stat_struct{ + ulint n_page_gets; /*!< number of page gets performed; + also successful searches through + the adaptive hash index are + counted as page gets; this field + is NOT protected by the buffer + pool mutex */ + ulint n_pages_read; /*!< number read operations */ + 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;/*!< number of pages read in + as part of read ahead */ + ulint n_ra_pages_evicted;/*!< number of read ahead + pages that are evicted without + being accessed */ + ulint n_pages_made_young; /*!< number of pages made young, in + calls to buf_LRU_make_block_young() */ + ulint n_pages_not_made_young; /*!< number of pages not made + young because the first access + was not long enough ago, in + buf_page_peek_if_too_old() */ +}; + /** @brief The buffer pool structure. NOTE! The definition appears here only for other modules of this @@ -1311,44 +1336,13 @@ struct buf_pool_struct{ time_t last_printout_time; /*!< when buf_print_io was last time called */ - ulint n_pages_made_young; - /*!< number of pages made young, in - calls to buf_LRU_make_block_young() */ - ulint n_pages_not_made_young; - /*!< number of pages not made - young because the first access - was not long enough ago, in - buf_page_peek_if_too_old() */ - ulint n_pages_read; /*!< number read operations */ - ulint n_pages_written;/*!< number write operations */ - ulint n_pages_created;/*!< number of pages created - in the pool with no read */ - ulint n_page_gets; /*!< number of page gets performed; - also successful searches through - the adaptive hash index are - counted as page gets; this field - is NOT protected by the buffer - pool mutex */ - ulint n_page_gets_old;/*!< n_page_gets when buf_print_io was - called last time: used to calculate - hit rate */ - ulint n_pages_made_young_old; - /*!< n_pages_made_young when - buf_print_io was called last time */ - ulint n_pages_not_made_young_old; - /*!< n_pages_not_made_young when - buf_print_io was called last time */ - ulint n_pages_read_old; - /*!< n_pages_read when buf_print_io - was called last time */ - ulint n_pages_written_old; - /*!< n_pages_written when buf_print_io - was called last time */ - ulint n_pages_created_old; - /*!< n_pages_created when buf_print_io - was called last time */ + buf_pool_stat_t stat; /*!< current statistics */ + buf_pool_stat_t old_stat; /*!< old statistics */ + /* @} */ + /** @name Page flushing algorithm fields */ + /* @{ */ UT_LIST_BASE_NODE_T(buf_page_t) flush_list; diff --git a/include/buf0buf.ic b/include/buf0buf.ic index af31006f422..409d339aa16 100644 --- a/include/buf0buf.ic +++ b/include/buf0buf.ic @@ -80,7 +80,7 @@ buf_page_peek_if_too_old( return(TRUE); } - buf_pool->n_pages_not_made_young++; + buf_pool->stat.n_pages_not_made_young++; return(FALSE); } else { /* FIXME: bpage->freed_page_clock is 31 bits */ diff --git a/include/buf0types.h b/include/buf0types.h index e7167d716a0..bfae6477135 100644 --- a/include/buf0types.h +++ b/include/buf0types.h @@ -34,6 +34,8 @@ typedef struct buf_block_struct buf_block_t; typedef struct buf_chunk_struct buf_chunk_t; /** Buffer pool comprising buf_chunk_t */ typedef struct buf_pool_struct buf_pool_t; +/** Buffer pool statistics struct */ +typedef struct buf_pool_stat_struct buf_pool_stat_t; /** A buffer frame. @see page_t */ typedef byte buf_frame_t; diff --git a/include/srv0srv.h b/include/srv0srv.h index 499bccfe2b8..23472bd100e 100644 --- a/include/srv0srv.h +++ b/include/srv0srv.h @@ -315,10 +315,6 @@ extern ulint srv_buf_pool_flushed; /** Number of buffer pool reads that led to the reading of a disk page */ extern ulint srv_buf_pool_reads; -/** Number of sequential read-aheads */ -extern ulint srv_read_ahead_seq; -/** Number of random read-aheads */ -extern ulint srv_read_ahead_rnd; /** Status variables to be passed to MySQL */ typedef struct export_var_struct export_struc; @@ -605,13 +601,13 @@ struct export_var_struct{ #ifdef UNIV_DEBUG ulint innodb_buffer_pool_pages_latched; /*!< Latched pages */ #endif /* UNIV_DEBUG */ - ulint innodb_buffer_pool_read_requests; /*!< buf_pool->n_page_gets */ + ulint innodb_buffer_pool_read_requests; /*!< buf_pool->stat.n_page_gets */ ulint innodb_buffer_pool_reads; /*!< srv_buf_pool_reads */ ulint innodb_buffer_pool_wait_free; /*!< srv_buf_pool_wait_free */ ulint innodb_buffer_pool_pages_flushed; /*!< srv_buf_pool_flushed */ ulint innodb_buffer_pool_write_requests;/*!< srv_buf_pool_write_requests */ - ulint innodb_buffer_pool_read_ahead_seq;/*!< srv_read_ahead_seq */ - ulint innodb_buffer_pool_read_ahead_rnd;/*!< srv_read_ahead_rnd */ + ulint innodb_buffer_pool_read_ahead; /*!< srv_read_ahead */ + ulint innodb_buffer_pool_read_ahead_evicted;/*!< srv_read_ahead evicted*/ ulint innodb_dblwr_pages_written; /*!< srv_dblwr_pages_written */ ulint innodb_dblwr_writes; /*!< srv_dblwr_writes */ ibool innodb_have_atomic_builtins; /*!< HAVE_ATOMIC_BUILTINS */ @@ -623,9 +619,9 @@ struct export_var_struct{ ulint innodb_os_log_pending_writes; /*!< srv_os_log_pending_writes */ ulint innodb_os_log_pending_fsyncs; /*!< fil_n_pending_log_flushes */ ulint innodb_page_size; /*!< UNIV_PAGE_SIZE */ - ulint innodb_pages_created; /*!< buf_pool->n_pages_created */ - ulint innodb_pages_read; /*!< buf_pool->n_pages_read */ - ulint innodb_pages_written; /*!< buf_pool->n_pages_written */ + ulint innodb_pages_created; /*!< buf_pool->stat.n_pages_created */ + ulint innodb_pages_read; /*!< buf_pool->stat.n_pages_read */ + ulint innodb_pages_written; /*!< buf_pool->stat.n_pages_written */ ulint innodb_row_lock_waits; /*!< srv_n_lock_wait_count */ ulint innodb_row_lock_current_waits; /*!< srv_n_lock_wait_current_count */ ib_int64_t innodb_row_lock_time; /*!< srv_n_lock_wait_time diff --git a/srv/srv0srv.c b/srv/srv0srv.c index b41c8acfab4..2f54e9b3734 100644 --- a/srv/srv0srv.c +++ b/srv/srv0srv.c @@ -292,12 +292,6 @@ UNIV_INTERN ulint srv_buf_pool_flushed = 0; reading of a disk page */ UNIV_INTERN ulint srv_buf_pool_reads = 0; -/** Number of sequential read-aheads */ -UNIV_INTERN ulint srv_read_ahead_seq = 0; - -/** Number of random read-aheads */ -UNIV_INTERN ulint srv_read_ahead_rnd = 0; - /* structure to pass status variables to MySQL */ UNIV_INTERN export_struc export_vars; @@ -464,8 +458,6 @@ static ulint srv_main_background_loops = 0; static ulint srv_main_flush_loops = 0; /* Log writes involving flush. */ static ulint srv_log_writes_and_flush = 0; -/* Log writes not including flush. */ -static ulint srv_log_buffer_writes = 0; /* This is only ever touched by the master thread. It records the time when the last flush of log file has happened. The master @@ -714,9 +706,8 @@ srv_print_master_thread_info( srv_main_1_second_loops, srv_main_sleeps, srv_main_10_second_loops, srv_main_background_loops, srv_main_flush_loops); - fprintf(file, "srv_master_thread log flush and writes: %lu " - " log writes only: %lu\n", - srv_log_writes_and_flush, srv_log_buffer_writes); + fprintf(file, "srv_master_thread log flush and writes: %lu\n", + srv_log_writes_and_flush); } /*********************************************************************//** @@ -1877,14 +1868,16 @@ srv_export_innodb_status(void) export_vars.innodb_data_reads = os_n_file_reads; export_vars.innodb_data_writes = os_n_file_writes; export_vars.innodb_data_written = srv_data_written; - export_vars.innodb_buffer_pool_read_requests = buf_pool->n_page_gets; + export_vars.innodb_buffer_pool_read_requests = buf_pool->stat.n_page_gets; export_vars.innodb_buffer_pool_write_requests = srv_buf_pool_write_requests; export_vars.innodb_buffer_pool_wait_free = srv_buf_pool_wait_free; export_vars.innodb_buffer_pool_pages_flushed = srv_buf_pool_flushed; export_vars.innodb_buffer_pool_reads = srv_buf_pool_reads; - export_vars.innodb_buffer_pool_read_ahead_rnd = srv_read_ahead_rnd; - export_vars.innodb_buffer_pool_read_ahead_seq = srv_read_ahead_seq; + export_vars.innodb_buffer_pool_read_ahead + = buf_pool->stat.n_ra_pages_read; + export_vars.innodb_buffer_pool_read_ahead_evicted + = buf_pool->stat.n_ra_pages_evicted; export_vars.innodb_buffer_pool_pages_data = UT_LIST_GET_LEN(buf_pool->LRU); export_vars.innodb_buffer_pool_pages_dirty @@ -1915,9 +1908,9 @@ srv_export_innodb_status(void) export_vars.innodb_log_writes = srv_log_writes; export_vars.innodb_dblwr_pages_written = srv_dblwr_pages_written; export_vars.innodb_dblwr_writes = srv_dblwr_writes; - export_vars.innodb_pages_created = buf_pool->n_pages_created; - export_vars.innodb_pages_read = buf_pool->n_pages_read; - export_vars.innodb_pages_written = buf_pool->n_pages_written; + export_vars.innodb_pages_created = buf_pool->stat.n_pages_created; + export_vars.innodb_pages_read = buf_pool->stat.n_pages_read; + export_vars.innodb_pages_written = buf_pool->stat.n_pages_written; export_vars.innodb_row_lock_waits = srv_n_lock_wait_count; export_vars.innodb_row_lock_current_waits = srv_n_lock_wait_current_count; @@ -2284,12 +2277,6 @@ srv_sync_log_buffer_in_background(void) log_buffer_sync_in_background(TRUE); srv_last_log_flush_time = current_time; srv_log_writes_and_flush++; - } else { - /* Actually we don't need to write logs here. - We are just being extra safe here by forcing - the log buffer to log file. */ - log_buffer_sync_in_background(FALSE); - srv_log_buffer_writes++; } } @@ -2340,8 +2327,8 @@ loop: srv_main_thread_op_info = "reserving kernel mutex"; - n_ios_very_old = log_sys->n_log_ios + buf_pool->n_pages_read - + buf_pool->n_pages_written; + n_ios_very_old = log_sys->n_log_ios + buf_pool->stat.n_pages_read + + buf_pool->stat.n_pages_written; mutex_enter(&kernel_mutex); /* Store the user activity counter at the start of this loop */ @@ -2361,8 +2348,8 @@ loop: skip_sleep = FALSE; for (i = 0; i < 10; i++) { - n_ios_old = log_sys->n_log_ios + buf_pool->n_pages_read - + buf_pool->n_pages_written; + n_ios_old = log_sys->n_log_ios + buf_pool->stat.n_pages_read + + buf_pool->stat.n_pages_written; srv_main_thread_op_info = "sleeping"; srv_main_1_second_loops++; @@ -2401,8 +2388,8 @@ loop: n_pend_ios = buf_get_n_pending_ios() + log_sys->n_pending_writes; - n_ios = log_sys->n_log_ios + buf_pool->n_pages_read - + buf_pool->n_pages_written; + n_ios = log_sys->n_log_ios + buf_pool->stat.n_pages_read + + buf_pool->stat.n_pages_written; if (n_pend_ios < SRV_PEND_IO_THRESHOLD && (n_ios - n_ios_old < SRV_RECENT_IO_ACTIVITY)) { srv_main_thread_op_info = "doing insert buffer merge"; @@ -2418,6 +2405,8 @@ loop: /* Try to keep the number of modified pages in the buffer pool under the limit wished by the user */ + srv_main_thread_op_info = + "flushing buffer pool pages"; n_pages_flushed = buf_flush_batch(BUF_FLUSH_LIST, PCT_IO(100), IB_ULONGLONG_MAX); @@ -2436,6 +2425,8 @@ loop: ulint n_flush = buf_flush_get_desired_flush_rate(); if (n_flush) { + srv_main_thread_op_info = + "flushing buffer pool pages"; n_flush = ut_min(PCT_IO(100), n_flush); n_pages_flushed = buf_flush_batch( @@ -2473,8 +2464,8 @@ loop: are not required, and may be disabled. */ n_pend_ios = buf_get_n_pending_ios() + log_sys->n_pending_writes; - n_ios = log_sys->n_log_ios + buf_pool->n_pages_read - + buf_pool->n_pages_written; + n_ios = log_sys->n_log_ios + buf_pool->stat.n_pages_read + + buf_pool->stat.n_pages_written; srv_main_10_second_loops++; if (n_pend_ios < SRV_PEND_IO_THRESHOLD