DB服务器
16 cores
63Gb RAM
CentOS release 6.8
等/ my.cnf中
[MysqLd]
pid_file=/var/lib/MysqL/fatty01.pid
datadir=/var/lib/MysqL
socket=/var/lib/MysqL/MysqL.sock
user=MysqL
innodb_buffer_pool_size = 50G
innodb_log_file_size = 2G
innodb_flush_log_at_trx_commit = 0
sync_binlog = 0
innodb_flush_method = O_DIRECT
innodb_buffer_pool_instances = 16
innodb_thread_concurrency = 16
skip_name_resolve = 1
innodb_io_capacity = 4000
innodb_io_capacity_max = 6000
innodb_buffer_pool_dump_at_shutdown = 1
innodb_buffer_pool_load_at_startup = 1
query_cache_size = 0
query_cache_type = OFF
innodb_checksum_algorithm = crc32
table_open_cache_instances = 16
innodb_read_io_threads = 20
innodb_write_io_threads = 10
max_connections = 700
when we have peaks of 3000 concurrent clients the MysqLd does not seem
to pull all the resources posibles from the machine.
That reflects in the front end server
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我的问题很明确,如何在不影响服务器的情况下提高性能？另外,如何减少前端服务器中的MysqL等待时间,因为数据库服务器端的配置显然存在问题.
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UPDATE After research the problem seem to be in the slow queries, so I
guess this configuration is optimal for this hardware
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解决方法:
不,它不太可能是一个简单的调整改变.正如我所说,my.cnf看起来不错 – 基于有限的信息.
根据图表,突然发生了一些事情.或者是一连串的活动.
打开slowlog,设置long_query_time = 1,等到问题再次发生,然后使用pt-query-digest告诉你顽皮的查询.
