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[20130706]传说中的中断风暴

Jun 07, 2016 pm 05:42 PM
interrupt legend

公告 [20130706]传说中的中断风暴 问题发生已经4天,一开始没在意,因为和性能影响不大。 现象: context switch很大,并且伴随内核模式cpu较高,大概20%以上。间歇性出现,一分钟左右一次很有规律。内核模式cpu花费在idle线程上面,往往中断量也会上升。 pr

公告

[20130706]传说中的中断风暴

问题发生已经4天,香港虚拟主机,一开始没在意,因为和性能影响不大。

现象:

  context switch很大,并且伴随内核模式cpu较高,大概20%以上。间歇性出现,美国空间,香港空间,一分钟左右一次很有规律。内核模式cpu花费在idle线程上面,往往中断量也会上升。

  process explorer发现是中断引起。

问题分析过程:

  google到国外称这种现象为中断风暴,就是一下子中断变得非常多。

  原本还想用xperf来跟踪问题:

  偶然在process explorer中发现是ssrs照成的这个问题。

原因:

  使用process explorer  原因是ssrs服务发起的中断过多,导致

解决方法:

  关掉ssrs服务即可 

 

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