> "sudo sysctl -w vm.drop_caches=3" is the smarter way to do it,
> or a fixed executable with sudo. or a fixed executable with suid.
> or better yet: have the system do it when appropriate,
> since inappropriate drop_caches could cause problems.
What problems?
http://linux-mm.org/Drop_Caches
"This is a non-destructive operation and will only free things that are
completely unused. Dirty objects will continue to be in use until written out
to disk and are not freeable. If you run "sync" first to flush them out to
disk, these drop operations will tend to free more memory."
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