实例:今天公司DB有大量的线程是freeingitems状态,通过排查分析是: query_cache_size=32M,而query_cache_limit=16M,太坑人了,DB游戏服务器上跑应用,还有一些大的不固定的数据抓取查询(不固定,经常变动),结果使用了Query cache,导致Query Cache池的抖动,频繁有cache失效,产生了freeing items状态,下面是官方对freeing it...
mysql>SHOWPROFILEFORQUERY1;+---+---+|Status|Duration|+---+---+|queryend|0.000107||freeing items|0.000008||logging slow query|0.000015||cleaning up|0.000006|+---+---+4rowsinset(0.00sec) mysql>SHOWPROFILE CPUFORQUERY2;+---+---+---+---+|Status|Duration|CPU_user|CPU_system|+---...
Freeing items also helps prevent memory leaks. If memory allocated for a query or operation is not freed, it remains occupied until the MySQL server is restarted. Over time, these accumulated memory leaks can degrade performance and even crash the server. Freeing items ensures that memory is pro...
mysql freeing items 状态 http://blog.sina.com.cn/s/blog_6128a8f00100wsdd.html数据库出现大量的freeing items状态 表更新慢 而且大量锁表 查看mysql官方freeing items状态说明 The thread has executed a command. This state is usually followed by cleaning up. 说明命令已经在执行正在进行清理 更新日志索引...
Status:DuplicateImpact on me: None Category:MySQL ServerSeverity:S2 (Serious) Version:5.1.34-community-log MySQL Community SerOS:Linux Assigned to:CPU Architecture:Any Tags:freeing items,lock,sending data,Stuck [17 Jun 2009 2:11] Ala'a Ibrahim ...
Bug #42951Slave connections hang on "freeing items" Submitted:18 Feb 2009 1:50Modified:1 Apr 2009 3:23 Reporter:Ian WhiteEmail Updates: Status:DuplicateImpact on me: None Category:MySQL Server: ReplicationSeverity:S1 (Critical) Version:5.1.31OS:Linux (Red Hat 5.2 (x86_64)) ...
In-Stock Items Gender Unisex Scale Other Place of Origin Guangdong, China Brand Name pinyu Model Number GMZR-09 Keyword FREEing B-style High School DxD Sexy Anime Figure Size 30/32cm Product Name model toy Package Color Box Function Decoraive Design sexy Cartoon Figure Usage Toy Decoration Type...
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