Date: Wed, 16 Feb 2005 14:57:44 -0600 From: Eric Anderson <anderson@centtech.com> To: Brooks Davis <brooks@one-eyed-alien.net> Cc: current@freebsd.org Subject: Re: where did all my memory go? Message-ID: <4213B3C8.3090508@centtech.com> In-Reply-To: <20050216201716.GA28436@odin.ac.hmc.edu> References: <1108584730.95661.12.camel@server.mcneil.com> <20050216201716.GA28436@odin.ac.hmc.edu>
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Brooks Davis wrote: > On Wed, Feb 16, 2005 at 12:12:10PM -0800, Sean McNeil wrote: > >>With a system built yesterday on my amd64, I had plenty of memory >>showing as free when the system completely started up. Even after >>intense usage I showed lots of free memory in top. Over night at some >>point all my memory is no longer free but inactive. Is there anything >>wrong here or is this expected behavior? ps doesn't show any serious >>usage by any particular process. Also, if disk caches or something were >>taking up the memory, I would expect it to have shown a lot earlier. > > > On a system that has been up for any significant time, free memory > should be very small since free memory is wasted. My guess is that it > is disk cache and that one of the nightly jobs accessed enough stuff to > fill it. Speaking of this - is there a way to flush the disk cache? Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology I have seen the future and it is just like the present, only longer. ------------------------------------------------------------------------
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