在一个单元中,我们运行如下:
BEGIN;
TRUNCATE table1;
TRUNCATE table2;
...
UPDATE ...;
ROLLBACK;
不幸的是,如果cron作业启动,并且该作业在table1和table2上运行,则会导致死锁。
DatabaseError: deadlock detected
DETAIL: Process 15815 waits for AccessExclusiveLock on relation 291262 of database 290999; blocked by process 16391.
Process 16391 waits
我需要访问ASP.NET MVC 2应用程序控制器中的用户特定数据。我的控制器类有两个控制器方法:
[ControllerSessionState(ControllerSessionState.ReadOnly)]
public class CalendarController : BasicController
{
[Authorize]
public ActionResult ControllerMethod1()
{
//reads session specific data
}
[Authorize]
public Act
对50个虚拟用户执行负载测试的结果有很大差异:
方法1)单机(m3.media)
No of Threads: 50 users
Ramp Uptime: 60 sec
方法2) JMeter初级-二级分布式测试
i) server - linux machine (m3.medium)
ii) client1 - linux machine (m3.medium) - No of Threads: 25, Ramp up time: 60 sec
iii) client2 - linux machine (m3.medium) - No of Threads: 25, Ramp up tim