June 19, 2013

Post: Virident vCache vs. FlashCache: Part 2

… \ –forced­-shutdown=1 ­­–max­-time=7200 ­­–max­-requests=0 ­­–percentile=95 ­­\ –mysql­-user=root –mysql­-socket=/tmp/mysql.sock ­­–mysql­-table­-engine=innodb ­­\ –oltp… max_connections = 5000 max_prepared_stmt_count=500000 max_connect_errors = 10 table_open_cache = 10240 max_allowed_packet = 16M binlog_cache_size = 16M max_heap_table…_type = 0 ft_min_word_len = 4 thread_stack = 192K tmp_table_size = 64M server­id = 101 key_buffer_size = 8M read…

Comment: TMP_TABLE_SIZE and MAX_HEAP_TABLE_SIZE

… i increase (max_heap_table_size & tmp_table_size) , what values you experts are recomended ? TEMP TABLES Current max_heap_table_size = 128 M Current tmp_table_size = 128 M Of 21559 temp tables

Post: Benchmarking Percona Server TokuDB vs InnoDB

max_connections = 2000 max_prepared_stmt_count=500000 max_connect_errors = 10 table_open_cache = 2048 max_allowed_packet = 16M binlog_cache_size = 16M max_heap_table…_type = 0 ft_min_word_len = 4 #default_table_type = InnoDB thread_stack = 192K tmp_table_size = 64M server-id = 10 #*** MyISAM Specific…

Post: More on MySQL transaction descriptors optimization

…=1 –max-time=120 –max-requests=0 –percentile=99 –mysql-user=root –mysql-db=sbtest8t1M –mysql-table-engine=INNODB –mysql-socket=/tmp/mysql.sock…=1 –max-time=120 –max-requests=0 –percentile=99 –mysql-user=root –mysql-db=sbtest8t1M –mysql-table-engine=INNODB –mysql-socket=/tmp/mysql.sock…

Post: TMP_TABLE_SIZE and MAX_HEAP_TABLE_SIZE

… types of in memory tables where internal ones are controlled by tmp_table_size and explicit ones use max_heap_table_size value. Interesting enough… “disk-tmp-table-size” introduced to set maximum expected on-disk temporary table size and avoid mix-up of tmp_table_size and max_heap_table_size…

Post: Ultimate MySQL variable and status reference list

max_seeks_for_keyblogpercona.commanual max_sort_lengthblogpercona.commanual max_sp_recursion_depthblogpercona.commanual max_tmp_tablesblogpercona.commanual Max_used_connectionsblogpercona.commanual max_user_connectionsblogpercona.commanual max…timestampblogpercona.commanual tmp_table_sizeblogpercona….

Post: How much overhead is caused by on disk temporary tables

… be created on disk as MYISAM tables. Which one will be used depends on the allowed tmp_table_size and also by the…) mysql> set global max_heap_table_size=1000000000; Query OK, 0 rows affected (0.00 sec) mysql> set global tmp_table_size=1000000000; Query… we have mysql> set max_heap_table_size=1000000000; Query OK, 0 rows affected (0.00 sec) mysql> set tmp_table_size=1000000000; Query…

Post: MySQL 5.5 and MySQL 5.6 default variable values differences

…HISTORY_LONG_SIZE | 10000 | 100 | | PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES | 1000000 | 1724 | | PERFORMANCE_SCHEMA_MAX_TABLE_HANDLES | 100000 | 2223 | | INNODB_LOG_FILE_SIZE…| /mnt/data/sandboxes/msb_5_5_30/tmp | /mnt/data/sandboxes/msb_5_6_10/tmp | | TABLE_OPEN_CACHE | 400 | 2000 | | INNODB_VERSION…

Post: Identifying the load with the help of pt-query-digest and Percona Server

Tmp_tables: 0 Tmp_disk_tables: 0 Tmp_table_sizes: 0 # InnoDB_trx_id: F00 # QC_Hit: No Full_scan: Yes Full_join: No Tmp_table: No Tmp_table… to 19:03:10 # Attribute pct total min max avg 95% stddev median # ============ === ======= ======= ======= ======= ======= ======= ======= # Count 1 312 # Exec …

Comment: New Forum Categories: Help Wanted, For Hire

… Processor 1TB – Disk My.cnf ========== freehold: [client] port=3323 socket=/tmp/mysqld_mdmp.sock character-sets-dir=/home/mysqld/sys/5…_relaylog max_relay_log_size=100M #read-only # limits max_connections=1000 #old-passwords #lower_case_table_names=1 general_log = ON max_heap_table…_relaylog max_relay_log_size=100M read-only # limits max_connections=1000 #old-passwords #lower_case_table_names=1 general_log = ON max_heap_table