mysql 配置优化问题

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这是一个创建于 3518 天前的主题，其中的信息可能已经有所发展或是发生改变。

服务器是32GB内存，网站特点是查询数据大，链接多。
请问该如何进行针对优化呢？
参考网上的教程自己优化后效果不太好。

优化

MySQL

32GB

5 条回复 • 2015-03-14 15:30:47 +08:00

Actrace

2015-03-14 09:00:56 +08:00

simple，开缓存。

msg7086

2015-03-14 09:57:17 +08:00 via iPhone

Query cache

fantasts

2015-03-14 13:43:37 +08:00

@Actrace
@msg7086 开启的

fantasts

2015-03-14 15:23:16 +08:00

工具的建议
-------- Performance Metrics -------------------------------------------------
[--] Up for: 5m 29s (52K q [159.957 qps], 924 conn, TX: 25B, RX: 14M)
[--] Reads / Writes: 96% / 4%
[--] Total buffers: 3.3G global + 21.2M per thread (3000 max threads)
[!!] Maximum possible memory usage: 65.6G (210% of installed RAM)

fantasts

2015-03-14 15:30:47 +08:00

我的配置文件
[client]
port = 3306
socket = /tmp/mysql.sock

[mysqld]
port = 3306
socket = /tmp/mysql.sock

basedir = /usr/local/mysql
datadir = /data/mysql
pid-file = /data/mysql/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1

skip-name-resolve
#skip-networking
back_log = 600

max_connections = 3000
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 1024
max_allowed_packet = 16M
binlog_cache_size = 1M
max_heap_table_size = 256M
tmp_table_size = 256M

thread_concurrency = 16

read_buffer_size = 1M
read_rnd_buffer_size = 16M
sort_buffer_size = 2M
join_buffer_size = 2M
key_buffer_size = 1024M
thread_cache_size = 128

query_cache_type = 1
query_cache_size = 32M
query_cache_limit = 4M

ft_min_word_len = 4

#log_bin = mysql-bin
#binlog_format = mixed
expire_logs_days = 30

log_error = /data/mysql/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /data/mysql/mysql-slow.log

performance_schema = 0
explicit_defaults_for_timestamp

#lower_case_table_names = 1

skip-external-locking

default_storage_engine = InnoDB
#default-storage-engine = MyISAM
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 2048M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 16
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 8M
innodb_log_file_size = 128M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
innodb_force_recovery = 1

bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1

interactive_timeout = 28800
wait_timeout = 28800

[mysqldump]
quick
max_allowed_packet = 16M

[myisamchk]
key_buffer_size = 1024M
sort_buffer_size = 2M
read_buffer = 4M
write_buffer = 4M