Date: Mon, 20 Apr 1998 10:54:46 +0200 From: pb@fasterix.frmug.org (Pierre Beyssac) To: phk@critter.freebsd.dk (Poul-Henning Kamp) Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/5236 Message-ID: <19980420105446.AG32944@mars.hsc.fr> In-Reply-To: <16263.893051669@critter.freebsd.dk>; from Poul-Henning Kamp on Apr 20, 1998 07:54:29 %2B0200 References: <19980420011335.SG57732@@> <16263.893051669@critter.freebsd.dk>
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According to Poul-Henning Kamp: > Well, first: zombies are signs of programming errors in the parent > process. System utilities (and kernel) shouldn't depend on correct user processes programming to work reliably. > Second: ps doesn't give an atomic snapshot of the system, > so it isn't an accurate view of system resources. Even though they are supposed to be updated atomically, the problem is most certainly with kernel tables, ps only reflects this. I assume top would, too, but I haven't tried it (hence the filing of my PR in the "kern" category). > Third: since it > isn't scheduled none of those awful things will happen. Should I understand that you would estimate the problem unsolved if the system wasted in the name of zombies processes all the CPU ps says they use ? By the way, what makes you think it doesn't since you don't rely on ps ? :-) > Fourth: If > you had included a patch for ps things would probably happen :-) Thanks, I take this to mean there's a tiny possibility my PR is not totally useless :-), so I'll give it a try. -- Pierre Beyssac pb@fasterix.frmug.org pb@fasterix.freenix.org {Free,Net,Open}BSD, Linux : il y a moins bien, mais c'est plus cher Free domains: http://www.eu.org/ or mail dns-manager@EU.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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