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"mlockall() locks all pages mapped into the address space of the calling process"

How to do it from console for a process tree?

Something like lockall sh -c "read_data | process_data | write_data", in style of nice, ionice and schedtool -e.

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up vote 2 down vote accepted

Implemented myself: libmlockall.

LD_PRELOAD it and it will call mlockall for each process it is being loaded into.

http://github.com/vi/libmlockall

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