Konfiguracja MySQL

[Pitu 160]

Witam

 

Mógłby ktoś podpowiedzieć na podstawie mojego pliku my.cnf oraz wyniku z tuning-primer.sh co zmienić i na jakie wartości?

 

Konfiguracja serwera

System: CentOS

Procesor: 2x2.33GHz

Pamięć: 2GB

 

my.cnf

 

[mysqld]
bind-address=127.0.0.1
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
query_cache_limit=1M
query_cache_size=32M
query_cache_type=1
max_connections=200
max_user_connections=600
interactive_timeout=100
wait_timeout=100
connect_timeout=10
thread_cache_size=128
key_buffer=128M
join_buffer_size=2M
max_allowed_packet=32M
table_cache=2000
sort_buffer_size=2M
read_buffer_size=2M
read_rnd_buffer_size=1536K
max_connect_errors=10
thread_concurrency=4
myisam_sort_buffer_size=64M
skip-locking
server-id=1

[mysql.server]
user=mysql
basedir=/var/lib

[safe_mysqld]
bind-address=127.0.0.1
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
open_files_limit=8192
SAFE_MYSQLD_OPTIONS=”–defaults-file=/etc/my.cnf
–log-slow-queries=/var/log/slow-queries.log”

#[mysqldump]
#quick
#max_allowed_packet=16M

[mysql]
no-auto-rehash

[isamchk]
key_buffer=128M
sort_buffer=128M
read_buffer=32M
write_buffer=32M

[myisamchk]
key_buffer=128M
sort_buffer=128M
read_buffer=32M
write_buffer=32M

[mysqlhotcopy]
interactive-timeout

 

 

Wynik z tuning-primer.sh

 

   	-- MYSQL PERFORMANCE TUNING PRIMER --
    		- By: Matthew Montgomery -

MySQL Version 5.0.77 i686

Uptime = 3 days 23 hrs 17 min 20 sec
Avg. qps = 176
Total Questions = 60475231
Threads Connected = 3

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/5.0/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 NOT enabled.
Current long_query_time = 10 sec.
You have 760 out of 60475409 that take longer than 10 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/5.0/en/point-in-time-recovery.html

WORKER THREADS
Current thread_cache_size = 128
Current threads_cached = 123
Current threads_per_sec = 0
Historic threads_per_sec = 0
Your thread_cache_size is fine

MAX CONNECTIONS
Current max_connections = 200
Current threads_connected = 5
Historic max_used_connections = 161
The number of used connections is 80% of the configured maximum.
Your max_connections variable seems to be fine.

INNODB STATUS
Current InnoDB index space = 8 M
Current InnoDB data space = 5 M
Current InnoDB buffer pool free = 0 %
Current innodb_buffer_pool_size = 8 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 : 1.37 G
Configured Max Per-thread Buffers : 1.50 G
Configured Max Global Buffers : 170 M
Configured Max Memory Limit : 1.66 G
Physical Memory : 1.95 G
Max memory limit seem to be within acceptable norms

KEY BUFFER
Current MyISAM index space = 264 M
Current key_buffer_size = 128 M
Key cache miss rate is 1 : 945
Key buffer free ratio = 76 %
Your key_buffer_size seems to be fine

QUERY CACHE
Query cache is enabled
Current query_cache_size = 32 M
Current query_cache_used = 26 M
Current query_cache_limit = 1 M
Current Query cache Memory fill ratio = 81.26 %
Current query_cache_min_res_unit = 4 K
However, 2779153 queries have been removed from the query cache due to lack of memory
Perhaps you should raise query_cache_size
MySQL won't cache query results that are larger than query_cache_limit in size

SORT OPERATIONS
Current sort_buffer_size = 2 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 3100 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 = 4210 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_cache value = 2000 tables
You have a total of 2273 tables
You have 2000 open tables.
Current table_cache hit rate is 6%
, while 100% of your table cache is in use
You should probably increase your table_cache

TEMP TABLES
Current max_heap_table_size = 16 M
Current tmp_table_size = 32 M
Of 52292 temp tables, 27% were created on disk
Effective in-memory tmp_table_size is limited to max_heap_table_size.
Perhaps you should increase your tmp_table_size and/or max_heap_table_size
to reduce the number of disk-based temporary tables
Note! BLOB and TEXT columns are not allow in memory tables.
If you are using these columns raising these values might not impact your
ratio of on disk temp tables.

TABLE SCANS
Current read_buffer_size = 2 M
Current table scan ratio = 194 : 1
read_buffer_size seems to be fine

TABLE LOCKING
Current Lock Wait ratio = 1 : 12819
Your table locking seems to be fine