Good answer, David. That would be my guess, too.
On Tue, Mar 31, 2009 at 10:28 AM, David Dooling <[email protected] > wrote: > > On Mon, Mar 30, 2009 at 04:46:40PM -0500, Theresa Kehoe wrote: > > Here's a question: why does the memory information reported by 'top' > > come out so differently from the memory information on the 'resources' > > tab of the system monitor? (running 8.10 ubuntu) > > > > They are both showing 0 on swap (should be correct), but top shows > > 2355632k used and 1006156k free out of a total of 3361788k. System > > monitor shows 507.1MB used (or 15.4%). If I had to guess, I'd put my > > money on system monitor (just booted up, not running much of anything > > yet). But maybe not ... anyone know why the difference? > > Probably the difference between memory being used for running > processes (heap+stack) and memory being used for I/O buffers (disk, > network). You can see a detailed breakdown by running the command > free(1). It appears that top is using the totals including the > buffers and cache and System Monitor is using the totals without > buffers and cache. > > Given the prevalence of shared libraries, whose code segments are > shared between programs while their data segments are not, how any > program adds/subtracts these numbers is up to anyone's guess. In > other words, these numbers are really only a guide. > > -- > David Dooling > http://www.politigenomics.com/ > > > > --~--~---------~--~----~------------~-------~--~----~ Central West End Linux Users Group (via Google Groups) Main page: http://www.cwelug.org To post: [email protected] To subscribe: [email protected] To unsubscribe: [email protected] More options: http://groups.google.com/group/cwelug -~----------~----~----~----~------~----~------~--~---
