Date: Thu, 26 Aug 1999 17:01:03 +0900 From: chas <panda@skinnyhippo.com> To: freebsd-questions@freebsd.org Subject: Re: High Inactive memory levels - cause for concern ? Message-ID: <3.0.5.32.19990826170103.009bab00@mail.skinnyhippo.com> In-Reply-To: <3.0.5.32.19990826115729.009454d0@mail.skinnyhippo.com>
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Just to follow up - at peak load, the figure for Inactive memory is even worse : ast pid: 98274; load averages: 0.84, 0.76, 0.67 142 processes: 1 running, 135 sleeping, 6 zombie CPU states: 48.2% user, 0.0% nice, 15.6% system, 0.0% interrupt, 36.2% idle Mem: 31M Active, 307M Inact, 23M Wired, 20M Cache, 8345K Buf, 122M Free Swap: 700M Total, 700M Free Am I going to get to the stage where Free memory is zero and all of it is 'inactive' ? If so, what proactive measures would you advise ? Thank you very much, chas >Good morning, > >'top' on my FreeBSD box shows the following : > >last pid: 36826; load averages: 0.15, 0.31, 0.33 >131 processes: 1 running, 130 sleeping >CPU states: 0.4% user, 0.0% nice, 0.0% system, 0.4% interrupt, 99.2% idle >Mem: 28M Active, 218M Inact, 22M Wired, 20M Cache, 8348K Buf, 214M Free >Swap: 700M Total, 700M Free > > >What caught my attention was the high value for "Inactive" memory. >I've scoured the archive and most people seem to have a low "Inact" >value, and few people have it more than the "Active" value. > >I found a very good post by David Gree, which stated : > >"The numbers represent the number of VM pages on various internal page >queues that the kernel manages. The "active" queue is a queue of pages >that the kernel, for a variety of reasons, considers "active". The "inactive" >queue is similarly named, but is also used as a way of controlling the >amount of dirty pages in the system (pages are moved to the inactive queue >prior to being cleaned by the pagedaemon)." > >If I understand this correct and applying to my 'top' output (above), >the Inact level means that I have 218 MB of RAM that has been used and >is about to be released again. How long should it take for this to >happen ? My Inact level has been hovering about 220 MB continuously. > >This box is just running a webserver and MySQL, averge 1.5 million hits/day >with about 80% of pages being dynamically generated (straight python CGI). > >Is it anything to worry about ? > >chas > > > > > > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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