Date: Sat, 2 Feb 2002 12:52:24 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Gaspar Chilingarov <nm@wizard.web.am> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: fork rate limit Message-ID: <200202022052.g12KqOM17214@apollo.backplane.com> References: <20020202201551.GA89061@mail.web.am>
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:Hi!
:
:Is it reasonable to administratively limit users' ability to call fork
:too other ? Users can take away too much CPU time even if you have
:limited them by login.conf 'cputime' limit - just forking lightweight
:processes too often.
:
:If it seems good thing to do, i'll try to code it and submit patches for
:-current.
:
:I think this limit must go to struct uidinfo, am i right ?
:Also i need to store per-user counters somewhere, can i place it there?
:
:--
:Gaspar Chilingarov
Well, we did make fork inherit the parent process's current
priority, so if a parent process forks() a lot it and its
children should get less cpu. Beyond that the system can't really
tell whether the cpu use is something the sysad wants (i.e. sa
y it's a web server) or something the sysad doesn't want (an
abusive user).
-Matt
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