最近发现系统经常会出现APPARENT DEADLOCK 的错误,如下
DEBUG|16:15:07,278| GenericDao:568 - Hql: FROM LoginSession l WHERE l.sessionToken = ?
DEBUG|16:15:09,905| GenericDao:568 - Hql: FROM LoginSession l WHERE l.sessionToken = ?
WARN |16:15:23,125| ThreadPoolAsynchronousRunner:608 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@649948aa -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
WARN |16:15:23,158| ThreadPoolAsynchronousRunner:624 - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@649948aa -- APPARENT DEADLOCK!!! Complete Status:
Managed Threads: 3
Active Threads: 3
Active Tasks:
发现是参数maxStatements和numHelperThreads所致的,
maxStatement太大会导致这个异常,
可以调整maxStatements为一个小点的值, 然后增加numHelperThreads的数量, 就可以修复这个异常
来源:
http://laravel.iteye.com/
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