Ron Isaacson created NIFI-5637:
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Summary: Swappiness recommendation
Key: NIFI-5637
URL: https://issues.apache.org/jira/browse/NIFI-5637
Project: Apache NiFi
Issue Type: Task
Components: Documentation & Website
Reporter: Ron Isaacson
Looking at the [System Administrator's
Guide|https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html], I
see that you recommend setting vm.swappiness = 0 in /etc/sysctl.conf. This
is fine in most cases, but must be avoided on RHEL 6.4 through 6.7.
On RedHat kernels pre-2.6.32-642, there's a bug which can cause the OOM
killer to aggressively kill processes even when RAM is still available and
swap is unused. See [this RedHat
article|https://access.redhat.com/solutions/1149413] for more information. (A
RedHat support login is required; if you don't have one, please contact me.)
I kindly recommend you add a note to your docs advising users not to apply
this setting on affected kernels. Thank you!
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