Messages in this thread |  | | From | (Fabio Yeon) | Subject | Re: NT vulnerable to attack on CPU | Date | Mon, 23 Dec 96 09:20:21 GMT |
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In article <96Dec20.083941pst.36078@gateway.fluke.com>, David Bezold <bezold@tc.fluke.com> wrote: > >On Thu, 19 Dec 1996, Oskar Pearson wrote: > >> >> > _Old problem _ >> > >> > Hogging the CPU is one of the oldest known forms of denial of service >> > attack. So old, in fact, that many operating systems have developed a >> > defense. Many forms of Unix allow administrators to set limits on CPU >> > usage by user - limiting any one user to 50 percent of available CPU >> > cycles, for example. >> > >> > Almost all forms of Unix also automatically decrease the priority of >> > the highest-priority processes when applications become starved for >> > CPU time, which is the opposite of what Windows NT does. >> > > >Once again bitten by insisting on re-inventing Unix and doing so badly. > >-Dave >
Hum, I wouldn't go there... Last I recall, Linux had the same problem with this bit of code, spawning processes exponentially until system grinds to a halt...
main() { while(1) { fork(); } }
Seems to be a problem with many OSs... Is Linux going to address CPU usage limit?
-- Fabio Yeon fay@acpub.duke.edu
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