Date: Wed, 18 Aug 2010 13:55:33 -0500 From: Paul Schmehl <pschmehl_lists@tx.rr.com> To: Aleksandr Miroslav <alexmiroslav@gmail.com>, freebsd-questions@freebsd.org Subject: Re: BSD equivalent of Linux's free(1)? Message-ID: <17B10793E5263A663EE132C9@utd65257.utdallas.edu> In-Reply-To: <AANLkTinY-pBzBbmg%2Bv5XQsRbhaBsJq9qxfXh9uPmhQPE@mail.gmail.com> References: <AANLkTikpOE%2BK6iWn38VKT_YiGY119JL5CcBVguMYq9q_@mail.gmail.com> <20100818184148.31442aa9@gumby.homeunix.com> <AANLkTinY-pBzBbmg%2Bv5XQsRbhaBsJq9qxfXh9uPmhQPE@mail.gmail.com>
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--On Wednesday, August 18, 2010 14:14:25 -0400 Aleksandr Miroslav <alexmiroslav@gmail.com> wrote: > On Wed, Aug 18, 2010 at 1:41 PM, RW <rwmaillists@googlemail.com> wrote: >> Is there any particular reason you want to know? Free memory isn't a >> very meaningful concept in FreeBSD. > > I have a webserver that had it's Apache killed this morning. The box > itself had been stable for several years, as well as the Apache > instance. The error that I saw in /var/log/messages was something along > the following: > > "pid 1234 (httpd), uid 100, was killed: out of swap space" > > So I went to check what was eating up the swap, > > The problem itself was tracked down fairly easily, someone had added a > shelt script to cron (/home/user/foo.sh) and had mistakenly put the full > path to the script into the script itself -- essentially creating a > forkbomb. > > But while I was in the middle of debugging this and noticed that line > from the logfile, I spent more time than necessary trying to figure out > exactly how much swap/memory was being used, and who was using it. man (8) pstat pstat -s -m Device 1M-blocks Used Avail Capacity /dev/ad8s1b 8192 0 8191 0% -- Paul Schmehl, Senior Infosec Analyst As if it wasn't already obvious, my opinions are my own and not those of my employer. ******************************************* "It is as useless to argue with those who have renounced the use of reason as to administer medication to the dead." Thomas Jefferson
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