Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!
[mysqld] socket=/home/virtual/FILESYSTEMTEMPLATE/.mysqlsock/mysql.sock ft_min_word_len=2 datadir=/var/lib/mysql skip-locking skip-innodb old-passwords = 1 key_buffer = 256M key_buffer_size = 1350M table_cache = 2048 sort_buffer_size = 32M read_buffer_size = 2M read_rnd_buffer_size = 32M join_buffer_size = 1M myisam_sort_buffer_size = 64M thread_cache_size = 256 query_cache_size = 800M query_cache_limit = 384M # Try number of CPU's*2 for thread_concurrency thread_concurrency = 8 thread_cache_size = 8 # log-bin # server-id=1 max_connections = 500 #Increase max_connect_errors from 10 to 1000 max_connect_errors=1000 #this is to log and find out slow query that slow down the server #log-queries-not-using-indexes #long_query_time = 5 log-slow-queries=/var/log/mysqld/slow.log #start added on Jan 30, 2009 #record_buffer=1M #net_buffer_length=16K #bulk_insert_buffer_size=1M #thread_cache=20 max_heap_table_size=1800M tmp_table_size=384M wait_timeout = 1800 #ended added on Jan 30, 2009 connect_timeout = 10 interactive_timeout = 120 [mysql.server] user=mysql #basedir=/var/lib [safe_mysqld] err-log=/var/log/mysqld/mysqld.log pid-file=/var/lib/mysql/mysql.pid open_files_limit=8192 [mysqldump] quick max_allowed_packet=16M [mysql] no-auto-rehash #safe-updates [isamchk] key_buffer = 256M sort_buffer_size = 32M read_buffer = 2M write_buffer = 2M [myisamchk] ft_min_word_len=2 key_buffer = 256M sort_buffer_size = 32M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout [client] socket=/home/virtual/FILESYSTEMTEMPLATE/.mysqlsock/mysql.sock
[(04:46 AM)][(root@alpha)] [(~)] $ ./tuning-primer.sh Using login values from ~/.my.cnf - INITIAL LOGIN ATTEMPT FAILED - Testing for stored webmin passwords: None Found Could not auto detect login info! Found potential sockets: /home/virtual/FILESYSTEMTEMPLATE/.mysqlsock/mysql.sock Using: /var/lib/mysql/mysql.sock Would you like to provide a different socket?: [y/N] n Do you have your login handy ? [y/N] : y User: root Password: temp123 Would you like me to create a ~/.my.cnf file for you? [y/N] : y -- MYSQL PERFORMANCE TUNING PRIMER -- - By: Matthew Montgomery - MySQL Version 5.1.58-community-log i686 Uptime = 6 days 14 hrs 52 min 7 sec Avg. qps = 90 Total Questions = 51940860 Threads Connected = 1 Server has been running for over 48hrs. It should be safe to follow these recommendations To find out more information on how each of these runtime variables effects performance visit: http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html Visit http://www.mysql.com/products/enterprise/advisors.html for info about MySQL's Enterprise Monitoring and Advisory Service SLOW QUERIES The slow query log is enabled. Current long_query_time = 10.000000 sec. You have 18736 out of 51940881 that take longer than 10.000000 sec. to complete Your long_query_time seems to be fine BINARY UPDATE LOG The binary update log is NOT enabled. You will not be able to do point in time recovery See http://dev.mysql.com/doc/refman/5.1/en/point-in-time-recovery.html WORKER THREADS Current thread_cache_size = 8 Current threads_cached = 7 Current threads_per_sec = 0 Historic threads_per_sec = 0 Your thread_cache_size is fine MAX CONNECTIONS Current max_connections = 500 Current threads_connected = 1 Historic max_used_connections = 173 The number of used connections is 34% of the configured maximum. Your max_connections variable seems to be fine. No InnoDB Support Enabled! MEMORY USAGE Max Memory Ever Allocated : 13.45 G Configured Max Per-thread Buffers : 32.80 G Configured Max Global Buffers : 2.09 G Configured Max Memory Limit : 34.90 G Physical Memory : 7.92 G Max memory limit exceeds 90% of physical memory KEY BUFFER Current MyISAM index space = 1.26 G Current key_buffer_size = 1.31 G Key cache miss rate is 1 : 13667 Key buffer free ratio = 43 % Your key_buffer_size seems to be too high. Perhaps you can use these resources elsewhere QUERY CACHE Query cache is enabled Current query_cache_size = 800 M Current query_cache_used = 159 M Current query_cache_limit = 384 M Current Query cache Memory fill ratio = 19.91 % Current query_cache_min_res_unit = 4 K Query Cache is 26 % fragmented Run "FLUSH QUERY CACHE" periodically to defragment the query cache memory If you have many small queries lower 'query_cache_min_res_unit' to reduce fragmentation. Your query_cache_size seems to be too high. Perhaps you can use these resources elsewhere MySQL won't cache query results that are larger than query_cache_limit in size SORT OPERATIONS Current sort_buffer_size = 32 M Current read_rnd_buffer_size = 32 M Sort buffer seems to be fine JOINS Current join_buffer_size = 1.00 M You have had 1553861 queries where a join could not use an index properly You should enable "log-queries-not-using-indexes" Then look for non indexed joins in the slow query log. If you are unable to optimize your queries you may want to increase your join_buffer_size to accommodate larger joins in one pass. Note! This script will still suggest raising the join_buffer_size when ANY joins not using indexes are found. OPEN FILES LIMIT Current open_files_limit = 8192 files The open_files_limit should typically be set to at least 2x-3x that of table_cache if you have heavy MyISAM usage. Your open_files_limit value seems to be fine TABLE CACHE Current table_open_cache = 2048 tables Current table_definition_cache = 256 tables You have a total of 700 tables You have 1322 open tables. The table_cache value seems to be fine You should probably increase your table_definition_cache value. TEMP TABLES Current max_heap_table_size = 1.75 G Current tmp_table_size = 384 M Of 196197 temp tables, 13% were created on disk Created disk tmp tables ratio seems fine TABLE SCANS Current read_buffer_size = 2 M Current table scan ratio = 217 : 1 read_buffer_size seems to be fine TABLE LOCKING Current Lock Wait ratio = 1 : 177 You may benefit from selective use of InnoDB. If you have long running SELECT's against MyISAM tables and perform frequent updates consider setting 'low_priority_updates=1' If you have a high concurrency of inserts on Dynamic row-length tables consider setting 'concurrent_insert=2'. [(04:48 AM)][(root@alpha)] [(~)] $
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