How does your question relate to RHN network and the use thereof? <a href="http://www.redhat.com/mailman/listinfo/rhn-users">http://www.redhat.com/mailman/listinfo/rhn-users</a> Discussions about using Red Hat Network to manage and apply updates to Red Hat Enterprise Linux, including discussion about particular Red Hat Enterprise Linux updates. This list is not intended for discussion about topics specific to Red Hat Enterprise Linux that do not involve Red Hat Network. For discussion of such topics, you may want to try: [1] RHEL 4 Discussion - <a href="https://www.redhat.com/mailman/listinfo/nahant-list">https://www.redhat.com/mailman/listinfo/nahant-list</a> [2] RHEL 3 Discussion - <a href="https://www.redhat.com/mailman/listinfo/taroon-list">https://www.redhat.com/mailman/listinfo/taroon-list</a> [3] Red Hat System Administrators' list: <a href="https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list">https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list</a> Please take your question to an appropriate list. <div> On 1/22/07, Rigoberto Corujo <<a href="mailto:rcorujo@yahoo.com">rcorujo@yahoo.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Thank you for your reply, Frank. What I don't understand is that, on n11, there is 6289408 - 4896448 = 1392960 kB of swap being used, but there is 2521308 kB of free memory. Since there is still 2521308 kB of free memory, why would any swap be needed at all? The swappiness setting is the same on both machines and has not been modified. By the way, I forgot to mention that the version of Linux is 2.6.9-34. Rigoberto --- "Lamon, Frank III" < <a href="mailto:Frank_LaMon@csx.com">Frank_LaMon@csx.com</a>> wrote: > Something doesn't jive here - n11 has done some > swapping and the OS "not running > anything other than the same minimal set of > processes" would not swap with 4GB of physical > memory. Something is requiring memory here and maybe > the swappiness setting has been modified, the OS > just sitting there won't swap. > > -----Original Message----- > From: <a href="mailto:rhn-users-bounces@redhat.com">rhn-users-bounces@redhat.com</a> > [mailto:<a href="mailto:rhn-users-bounces@redhat.com">rhn-users-bounces@redhat.com </a>]On Behalf Of > Rigoberto Corujo > Sent: Monday, January 22, 2007 5:05 PM > To: <a href="mailto:rhn-users@redhat.com">rhn-users@redhat.com</a> > Subject: [rhn-users] Question on memory usage > > > Hello, > > I have two machines which have the same amount of > total memory. When the machines are booted, the > amount of free memory is the same as shown by > "/proc/meminfo". After a period of time, the amount > of free memory differs betweem the two machines even > though, at the time I'm taking a reading of > "/proc/meminfo", both machines are not running > anything other than the same minimal set of > processes. > That is, no user apps. Just the bare bones system > processes. > > Here's an example of two machines, n5 and n11, and > their "/proc/meminfo" values. Can someone explain > why > this situation would occur and is there any why to > tell Linux to reclaim any memory that's not actually > being used? > > [root@n5 ~]# cat /proc/meminfo > MemTotal: 4037388 kB > MemFree: 3814020 kB > Buffers: 24868 kB > Cached: 61404 kB > SwapCached: 60064 kB > Active: 34188 kB > Inactive: 119224 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 4037388 kB > LowFree: 3814020 kB > SwapTotal: 6289408 kB > SwapFree: 6228780 kB > Dirty: 0 kB > Writeback: 0 kB > Mapped: 24776 kB > Slab: 37776 kB > Committed_AS: 50692 kB > PageTables: 1232 kB > VmallocTotal: 536870911 kB > VmallocUsed: 15788 kB > VmallocChunk: 536855115 kB > HugePages_Total: 0 > HugePages_Free: 0 > Hugepagesize: 2048 kB > > > [root@n11 ~]# cat /proc/meminfo > MemTotal: 4037388 kB > MemFree: 2521308 kB > Buffers: 17676 kB > Cached: 27108 kB > SwapCached: 1392056 kB > Active: 39660 kB > Inactive: 1403784 kB > HighTotal: 0 kB > HighFree: 0 kB > LowTotal: 4037388 kB > LowFree: 2521308 kB > SwapTotal: 6289408 kB > SwapFree: 4896448 kB > Dirty: 0 kB > Writeback: 0 kB > Mapped: 24324 kB > Slab: 40444 kB > Committed_AS: 50832 kB > PageTables: 1232 kB > VmallocTotal: 536870911 kB > VmallocUsed: 15788 kB > VmallocChunk: 536855115 kB > HugePages_Total: 0 > HugePages_Free: 0 > Hugepagesize: 2048 kB > > Thank you. > > Rigoberto > > > > ____________________________________________________________________________________ > Any questions? 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