Date: Mon, 9 Nov 1998 09:45:37 -0500 (EST) From: John Fieber <jfieber@indiana.edu> To: Brian Feldman <green@unixhelp.org> Cc: garman@earthling.net, current@FreeBSD.ORG, julian@whistle.com, wollman@khavrinen.lcs.mit.edu Subject: Re: The infamous dying daemons bug Message-ID: <Pine.BSF.4.05.9811090932230.462-100000@fallout.campusview.indiana.edu> In-Reply-To: <Pine.BSF.4.05.9811082226380.11650-100000@janus.syracuse.net>
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On Sun, 8 Nov 1998, Brian Feldman wrote: > Device 1K-blocks Used Avail Capacity Type > /dev/wd0s1b 102400 12300 89972 12% Interleaved > /dev/wd1s1b 102400 12408 89864 12% Interleaved > Total 204544 24708 179836 12% > This is normal usage after > swap_pager: suggest more swap space: 157 MB > swap_pager: out of swap space > pid 5795 (memory), uid 1000, was killed: out of swap space I don't think this illustrates bug we are trying to smoke out though. This is showing the "memory" process as being killed, presumably because it went overboard on memory consumption. The dying daemon bug seems to manifists itself in the death of innocent bystander processes and usually by a signal 11, not by "out of swap space". Note these two observations: Date: Sun, 8 Nov 1998 15:26:48 -0800 (PST) From: Julian Elischer <julian@whistle.com> Message-ID: <Pine.BSF.3.95.981108152353.12341D-100000@current1.whistle.com> It's been a while since we looked at it closely but it appeared that a page of useful memeory was suddenly unmapped from the process. Date: Sun, 8 Nov 1998 23:17:00 -0500 (EST) From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Message-Id: <199811090417.XAA13563@khavrinen.lcs.mit.edu> It seems, so far as I was able to characterize, to happen to daemons which are *swapped out* at the time of the memory shortage. If it's active enough to still be in core, it doesn't get spammed. -john To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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