Re: user-mode port 0.56-2.4.18-15

From: Jeff Dike (jdike@karaya.com)
Date: Tue Apr 09 2002 - 18:16:33 EST


pavel@suse.cz said:
> Why don't you just feed your /dev/random from hosts /dev/random?

That would open up DOS attacks on the host. A nasty person inside a UML
could drain the host's /dev/random and hang anything on the host that needs
random numbers.

> Wow.. Why such strange value?

HZ > 50 is needed to make ps and friends shut up.
HZ % 4 == 0 is needed to make some QOS thing compile.

                                Jeff
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