> don't know when you'll need free memory pages. For example I can
> point network appliances/dedicated devices. Assuming routing/
> firewalling/accounting is the high-level priority job for this device you
> should not let low-priority job (as logging) to interfere the productivity
> of high-priority ones. Say, you have this logging software using all the
> pages in the VM system and in a certain moment you have to process
> some traffic in a "no free memory" enviroment. Starting VM/cache
> syncroniztaion may degrade network performance, firewall processing,
> etc.

for this you can set vm.filemax to low value