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Consulting, integration, management, optimization and support for Snowflake data platforms
Analyze current database variables for memory settings and compare to recommendations for engine types and resource availability. Engine types: mysql: 0 [InnoDB] 6 [MyISAM] photography: 0 [InnoDB] 46 [MyISAM] phpmyadmin: 0 [InnoDB] 7 [MyISAM] store: 0 [InnoDB] 95 [MyISAM] store2: 0 [InnoDB] 108 [MyISAM] test: 0 [InnoDB] 163 [MyISAM] tester: 0 [InnoDB] 47 [MyISAM] Global engine stats: 0 [InnoDB] 472 [MyISAM] Temp Space: max_heap_table_size: 16777216 tmp_table_size (33554432) reduced to max_heap_table_size (16777216) ::created_tmp_disk_tables / created_tmp_tables: 41458 / 335127 :: if large, consider increasing tmp_table_size (current: 33554432) Open Tables: ::opened_tables: 5345 - current 256 open :: if large, consider increasing table_cache (current: 256) Handler Types - suggests scan types: ::handler_read_key: 2725388748 ::handler_read_first: 731618 ::handler_read_next: 2031102802 ::handler_read_previous: 5521706 ::handler_read_rnd: 23146095 ::handler_update: 582409460 ::handler_delete: 99025 ::handler_write: 34868369 ::handler_rollback: 0 COM_... Values: ::com_alter_table: 0 ::com_commit: 6759 ::com_create_table: 0 ::com_delete: 400977 ::com_drop_table: 0 ::com_flush: 2832 ::com_insert: 86174 ::com_insert_select: 7012 ::com_purge: 0 ::com_replace: 31894 ::com_rollback: 0 ::com_select: 3442869 ::com_truncate: 2 ::com_update: 885649 General memory usage: binlog_cache_size: 0 query_cache_size: 33554432 ::holding 4229 queries with 26960360 free memory ::qcache hit ratio: 77.45 % ::qcache_lowmem_prunes can suggest qcache too small - 167983 TOTAL: 32 M MyISAM fixed memory usage: key_buffer_size: 67108864 ::key_buffer usage: 100 % (high-water: 0 %) ::Read ratio to disk instead of buffer: 0.07 % (ideally less than 1%) ::Write ratio to disk instead of buffer: 39.59 % (may be high if lots of deletes/updates) delay_key_write isON, lowers key_disk_write ratio. myisam_sort_buffer_size: 8388608 (for sorting MyISAM indexes) TOTAL: 72 M InnoDB fixed memory usage: have_innodb?: YES innodb_buffer_pool_size: 8388608 innodb_additional_mem_pool_size: 1048576 innodb_log_buffer_size: 1048576 TOTAL: 10 M Per connection memory usage: thread stack: 126976 net_buffer_length: 8192 (alloc. per client, grows to 1047552) TOTAL: 0.13 M Per allocation memory usage: bulk_insert_buffer_size: 8388608 (alloc. for insert..select, load data infile, insert value exteded) sort_buffer_size: 524280 (allocated for sorts, order by) read_buffer_size: 1044480 (allocated for sequential scans) read_rnd_buffer_size: 262144 (pre-alloc. for sorted reads) join_buffer_size: 131072 (using full-table-scan, alloc. per join) TOTAL: 9.87 M Summary: max_connections: 100 Potential Connection Memory: 13 M ::Current Connections - 3 (1 active) ::Max_Used_Connections - 100 ::Thread Cache (0) hit ratio - 0.0100000000000051 % Theoretical Potential Consumption: 95 M MySQL formula: key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections = 67108864 + (1044480 + 524280) * 100 = 213.6 M Physical memory available: 995.5 M OK Physical memory within threshold for theoretical memory usage.
Official Pythian® Blog
Official Pythian® Blog