>80% futex from strace on mongod

[dhsieh]

We have observed unusual high CPU usage on master mongod. Strace
reported > 80% of total time spent in futex calls. Wonder what might
contribute to this phenomenon?

[dhsieh]

I wonder if db.serverStatus()'s globalLock.ratio value may have any
bearing to futext(0 calls length?

[Eran Uzan]

This happen to me us too anyone know whats the solution for this?

[Kevin Adistambha]

Hi Eran

This happen to me us too anyone know whats the solution for this?

Please note that you’re replying to a thread from 2012. There are many improvements and large differences between MongoDB today and MongoDB in 2012.

If you’re having issues, please open a new thread with:

• What is your exact issue, and what does the mongod logs show during the issue
• What is your MongoDB version and your OS version
• Your topology details (standalone, replica set, sharded cluster)
• Can the issue be reproduced reliably, and how does it hinder your operation

Best regards
Kevin

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