Date: Fri, 16 Feb 1996 11:15:32 -0800 From: David Greenman <davidg@Root.COM> To: Tony Jones <tony@thing.sunquest.com> Cc: questions@freebsd.org Subject: Re: Where does all the memory go ? Message-ID: <199602161915.LAA00232@Root.COM> In-Reply-To: Your message of "Fri, 16 Feb 1996 11:30:38 MST." <9602161830.AA20449@thing.sunquest.com>
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>That is a total of just over 20MB. > >Clearly, the kernel takes up some unaccounted for space. Does the UBC also ? >or since it is integrated with the VM system, is buffer cache use reflected in >the vmstat output ? > >Just looking for some information on how to better account for memory usage, >or to figure for the missing 12MB. Or maybe using PS rss + VMSTAT free + kernel >space is not a valid measurement technique ? > >I guess I was slightly surprised to see only 11MB on the free list in the >above situation. "Free" memory consists of free and cached pages. See the output of 'vmstat -s' for the "pages in VM cache". In general, this is the number of pages that contain cached file data. -DG David Greenman Core Team/Principal Architect, The FreeBSD Project
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