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Type: Bug
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Resolution: Done
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Priority: Trivial - P5
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Affects Version/s: mongodb-3.0
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Component/s: manual
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Labels:None
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Environment:RHEL.
Other Linux distributions?
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0.25
Hello.
In the Disable Transparent Huge Pages , under In /etc/rc.local (Alternate) subject the following script is shown.
if test -f /sys/kernel/mm/transparent_hugepage/khugepaged/defrag; then
echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag
fi
if test -f /sys/kernel/mm/transparent_hugepage/defrag; then
echo never > /sys/kernel/mm/transparent_hugepage/defrag
fi
if test -f /sys/kernel/mm/transparent_hugepage/enabled; then
echo never > /sys/kernel/mm/transparent_hugepage/enabled
fi
Running the first echo return an error:
[root@localhost] echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag
-bash: echo: write error: Invalid argument
Cating the parameter gives the following result:
cat /sys/kernel/mm/transparent_hugepage/khugepaged/defrag
[yes] no
Which means the right way to change parameter is :
echo no > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag
I have tested it on RHEL 6.6, but its probably relevant to other Linux distributions .