June 20, 2013

Post: MySQL and the SSB - Part 2 - MyISAM vs InnoDB low concurrency

… fast machine with a Xeon E5-2680 (8 cores, 16 threads) with fast IO (OCZ R4 1.6TB) and 128GB memory…_buffer_size=8M default_tmp_storage_engine=myisam tmpdir=/dev/shm innodb_undo_logs=32 innodb_old_blocks_time=0 table_open_cache=2048 table_definition_cache=16384 innodb_flush_method=O_DIRECT key_buffer_size=10G # Disabling symbolic…

Post: Virident vCache vs. FlashCache: Part 2

…_cache = 10240 max_allowed_packet = 16M binlog_cache_size = 16M max_heap_table_size = 64M sort_buffer_size = 4M join_buffer_size = 4M thread_cache_size = 1000 query_cache_size = 0 query_cache_type = 0 ft_min_word_len = 4 thread

Post: Benchmarking Percona Server TokuDB vs InnoDB

…_cache = 2048 max_allowed_packet = 16M binlog_cache_size = 16M max_heap_table_size = 64M sort_buffer_size = 4M join_buffer_size = 4M thread_cache_size = 1000 query_cache_size = 0 query_cache_type = 0 ft_min_word…

Post: MySQL and Percona Server in LinkBench benchmark

…_io_threads = 8 innodb_io_capacity = 5000 sync_binlog=0 max_connections=5000 table_open_cache=5000 table-definition-cache=1000 query_cache_size=0 query_cache_type=0 performance_schema=0 #56only loose-innodb_flush_neighbors=0

Post: More on MySQL transaction descriptors optimization

…_method = O_DIRECT innodb_log_buffer_size = 16M innodb_buffer_pool_size = 52G innodb_log_file_size = 2000M innodb_log_files_in_group…_threads = 8 innodb_write_io_threads = 8 innodb_io_capacity = 2000 max_connections=5000 table_open_cache=5000 query_cache_type=OFF performance_schema=0… ‘%0%’ SysBench-0.5/lua: POINT_SELECT QPS test sysbench –num-threads=<1..1024> –test=oltp.lua –oltp_tables_count=8 –oltp-table-size

Post: MySQL 5.5 and MySQL 5.6 default variable values differences

… | | TABLE_OPEN_CACHE | 400 | 2000 | | INNODB_VERSION | 5.5.30 | 1.2.10 | | INNODB_BUFFER_POOL_INSTANCES | 1 | 8 | | QUERY_CACHE_SIZE | 0 | 1048576…/data/msan | | VERSION_COMPILE_OS | linux2.6 | linux-glibc2.5 | | THREAD_CACHE_SIZE | 0 | 9 | | PLUGIN_DIR | /mnt/nfs/dist/5.5.30/lib… set to 1000 making Innodb Buffer Pool Size scan resistant by default. Very welcome change ! thread_cache_size is enabled by default, though I…

Post: Aligning IO on a hard disk RAID – the Benchmarks

… table_cache = 2048 max_allowed_packet = 16M binlog_cache_size = 16M max_heap_table_size = 64M thread_cache_size = 32 query_cache_size = 0 tmp_table_size = 64M key_buffer_size = 8M bulk_insert_buffer_size = 8M myisam_sort_buffer_size

Comment: MySQL Server Memory Usage

…’895966639′ ‘Table_locks_waited’, ’20096′ ‘Threads_cached‘, ‘0‘ ‘Threads_connected’, ’260′ ‘Threads_created’, ’124272′ ‘Threads_running’, ’3′ ‘Uptime’, ’4433556′ …size=32M # Only for MyISAM which isnt used. sort_buffer_size=2M query_cache_size=10M # Might be increased thread_cache_size=40 table_cache

Post: Shard-Query EC2 images available

… Array ( [count(*)] => 135125787 ) 1 rows returned (0.084244966506958s, 0.078309059143066s, 0.0059359073638916s) Execute the test: As…cache skip-name-resolve sort-buffer-size=512K sql-mode=STRICT_TRANS_TABLES symbolic-links table-definition-cache=16384 table-open-cache=128 thread-cache-size=32 thread

Post: XtraDB/InnoDB CPU bound benchmarks on 24cores server

…_size=64M max_prepared_stmt_count=1000000 query_cache_size=0 skip_grant_tables skip_locking sort_buffer_size=64K table_cache=2048 thread_cache_size=16 thread_concurrency=16 thread_stack=196K tmp_table_size=64M…