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Resource Starvation
Denial of Service from the inside
Use all the CPU/RAM/disk, so that no one else can do anything on the system
- $ ulimit -a
- Quota support (on ext2/ext3/reiser filesystems)
- Process scheduling
- $ nice -n -20 ./killcpu
- By default, mortals cannot make their processes “urgent”
Notes:
On a multiuser system, it is extremely important to set proper limits. Someone might even non-maliciously hog the CPU of your server, while other users cannot get their work done!