Messages in this thread | | | Date | Mon, 13 Mar 2000 20:51:08 +0100 | From | Ragnar Kjørstad <> | Subject | Re: Some questions about linux kernel. |
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On Mon, Mar 13, 2000 at 11:19:48AM +0000, Paul Jakma wrote: > On Sun, 12 Mar 2000, Horst von Brand wrote: > > How does the VM notice that it needs to reserve space or dole it out, when > > there are several root processes that need memory (named, the ftpd inetd is > > spawning, ...)? > > we trust root processes not to leak memory.. else we wouldn't run them > as root would we?
Most people don't check the source of every program they run - not even as root. An algorithm that will never kill processes running as root will be a big problem in the (rare) cases when root processes go crazy. It's better to kill the processes that actually tries to allocate memory. (and the page-fault approach sounds even better)
> well there is no perfect solution to OOM. But allowing root to telnet in > is IMO preferable to near-random killing.
telnetd runs as root no matter who is telneting in. With this approach, anyone can kill every process running as non-root by making a lot of telnet-connections. Not good.
-- Ragnar Kjørstad
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