Оптимизация базы MySQL : MySQL & MariaDB

box ~ # /scripts/tuning-primer.sh 
 
	-- MYSQL PERFORMANCE TUNING PRIMER --
	     - By: Matthew Montgomery -

MySQL Version 5.1.66-log x86_64

Uptime = 1 days 17 hrs 17 min 40 sec
Avg. qps = 781
Total Questions = 116151030
Threads Connected = 32

Warning: Server has not been running for at least 48hrs.
It may not be safe to use 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 = 5.000000 sec.
You have 3 out of 116151051 that take longer than 5.000000 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 = 4
Current threads_cached = 3
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 150
Current threads_connected = 32
Historic max_used_connections = 43
The number of used connections is 28% of the configured maximum.
Your max_connections variable seems to be fine.

INNODB STATUS
Current InnoDB index space = 928 K
Current InnoDB data space = 880 K
Current InnoDB buffer pool free = 0 %
Current innodb_buffer_pool_size = 1 M
Depending on how much space your innodb indexes take up it may be safe
to increase this value to up to 2 / 3 of total system memory

MEMORY USAGE
Max Memory Ever Allocated : 562 M
Configured Max Per-thread Buffers : 675 M
Configured Max Global Buffers : 369 M
Configured Max Memory Limit : 1.01 G
Physical Memory : 7.73 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 349 M
Current key_buffer_size = 256 M
Key cache miss rate is 1 : 115
Key buffer free ratio = 73 %
Your key_buffer_size seems to be fine

QUERY CACHE
Query cache is enabled
Current query_cache_size = 16 M
Current query_cache_used = 12 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 76.88 %
Current query_cache_min_res_unit = 2 K
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 1 M
Current read_rnd_buffer_size = 1 M
Sort buffer seems to be fine

JOINS
Current join_buffer_size = 2.00 M
You have had 41 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 = 1184 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 = 512 tables
Current table_definition_cache = 256 tables
You have a total of 387 tables
You have 512 open tables.
Current table_cache hit rate is 24%
, while 100% of your table cache is in use
You should probably increase your table_cache
You should probably increase your table_definition_cache value.

TEMP TABLES
Current max_heap_table_size = 256 M
Current tmp_table_size = 256 M
Of 28805266 temp tables, 0% were created on disk
Created disk tmp tables ratio seems fine

TABLE SCANS
Current read_buffer_size = 256 K
Current table scan ratio = 5949 : 1
You have a high ratio of sequential access requests to SELECTs
You may benefit from raising read_buffer_size and/or improving your use of indexes.

TABLE LOCKING
Current Lock Wait ratio = 1 : 2538
You may benefit from selective use of InnoDB.