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Where can I set the read-ahead per the following warning in our mongod.log?

coreyf311
Path Finder

Were can I set the read-ahead per this warning in our mongod.log? recommends changing it to 256 or lower.

** WARNING: Readahead for /opt/splunk/var/lib/splunk/kvstore/mongo is set to 4096KB

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dkeck
Influencer
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coreyf311
Path Finder

unfortunately no. We have not upgraded nor do I have those warning messages.

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