mysql query cache size

SELECT * from(SELECTSql_text, sql_id, Cpu_time fromV$sqlORDER byCpu_timeDESC) WHERERownum Ten ORDER byRownumASC;SELECT * from(SELECTSql_text, sql_id, Cpu_time fromV$sqlareaORDER byCpu_timeDESC) WHERERownum Ten ORDERByrownumASC;These 2 statements effect basically the same, one from the V$sql view query from the V$sqlarea view.列出使用频率最高的5个查询：SELECT sql_text, executions from (SELECT sql_text, executions, over (ORDERb

About MySQL lsquo; showglobalstatusrsquo; Output Com_select, Queries, Questions, Qcache_hits, Qcache_inserts, Qcache_not About MySQL lsquo; show global statusrsquo; Output Com_select, Queries, Questions, Qcache_hits, Qcache_inserts, Qcache_not The status values Com_select, Queries, Questions, Qcache_hits, Qcache_inserts, and Qcache_not_cached output by 'show global status' in

Recently, I have been asked questions about MySQL Query Cache. I just want to sort out some MySQL Query Cache content for your reference. As the name suggests, MySQL

Tags: MySQL query cache query Statement statistics Query Cache state interpretationAbout MySQL ' Show global status ' output of Com_select, Queries, Questions, Qcache_hits, Qcache_inser

number, including cache-unable SQL and SQL not cache due to Query_cache_type settingsQcache_queries_in_cache: The number of SQL currently in Query cacheTotal block number in qcache_total_blocks:query CacheCan calculate the cache hit rate according to these several states, calculate the

zombie situation.1.3 How the query cache uses memoryThe query cache is completely stored in memory, so before we can configure and use it, we need to understand how it uses memory. In addition to the query results, it requires some memory specifically to determine what memo

ignored directly, but at this time you also have to bear the performance cost of creating indexes when inserting data.2: The cached configuration.In MySQL there are a variety of caches, some cache is responsible for caching query statements, and some are responsible for caching query data. These cached content clients

First look at the MSYQL logical framework: Images from high-performance MySQLIf Querycache is used, when the query receives one and the same query, the server retrieves the results from the query cache instead of parsing and executing the same query again. This can greatly i

Mysql query CacheWhen talking to friends or colleagues about the mysql Cache Query function, I like to compare Query Cache to litchi, which is a very nutritious thing. However, if I eat

Recently, I have been asked questions about MySQL query cache. I just want to sort out some MySQL query cache content for your reference. As the name suggests, MySQL

than 1M, you have to adjust the value of "query_cache_limit" to avoid the MySQL cache because the result set size exceeds the limit.View query Cache-related state variables650) this.width=650; "src=" Http://my.csdn.net/uploads/201208/12/1344760080_2359.png "/> Qcac