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High CPU Usage with MongoDB?

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I have problem with mongods high cpu usage. We get 3000 data per second, and I insert it per 100,000.(insert with c++ driver, using vector)

I expect even progress of cpu, but I intermittently found high cpu of mongod. Although there is no result of currentOp() command. Why cpu status shows like below?

Insert amount of 459~742 second is not bigger than before, but mongods cpu usage is much bigger.

What can be cause of this status?

posted Apr 17, 2017 by Kaushik

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