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jrk's aria2 example is incorrect. -s specifies the global connection limit; the per-host connection limit is specified with -x.
Periodically run the one-liner above if/when there are significant changes to the files in /usr/
= Before rebooting, add following to /etc/fstab : =
/squashed/usr/usr.sfs /squashed/usr/ro squashfs loop,ro 0 0
usr /usr aufs udba=reval,br:/squashed/usr/rw:/squashed/usr/ro 0 0
No need to delete original /usr/ ! (unless you don't care about recovery). Also AuFS does not work with XFS
grabbed from Andrew Aylett post:
`aria2c` (from the aria2 project) allows. Change -s 4 to an arbitrary number of segments to control the number of concurrent connections. It is also possible to provide multiple URLs to the same content (potentially over multiple protocols) to download the file concurrently from multiple hosts.
killall -CONT -m firefox
Suspends all Firefox Threads. Results in Zero CPU load.
Useful when having 100+ Tabs open and you temporarily need the power elsewhere.
Be careful - might produce RACE CONDITIONS or LOCKUPS in other processes or FF itself.
matching is case sensitive.