On Tuesday 08 May 2007 19:29, Registration Account wrote: > Carlos, > Exactly the response I was looking for. After having to deal with the > appalling memory management of other PC O/S you have answered the > question perfectly. > > However, I now need to know is there a process that removes items from > cache after a period of time or will available memory be used to cache > continually without being flushed. > > Now my query comes down to "unused cache flush time" and > "flush cache due to processing demands determination" > > Thanks > Scott > > Carlos E. R. wrote: > > The Monday 2007-05-07 at 07:25 +1000, Registration Account wrote: > > > > ... > > > > > For example I have 2 GIG of RAM currently and am thinking of changing > > > it to 4 GIG. I understand that the kernel can use more file cacheing, > > > but that is what I do not want to know. With the superior way the Linux > > > Kernel manages Memory, if we remove the increased file caching ability > > > will the Kernel be able to utilise the extra memory registers for > > > processing. > > > > I think you got it wrong... if there is more memory, programs will be > > able > > to use more memory, /if/ they request it. All unused memory will simply > > end up being used as cache. > > > > If currently, with 2G, you see no swap used, increasing the ram will not > > give more memory to programs.
Scott, play a little with command "free" starting programs and you will see that cache is disappearing in favor of programs. $ free > total used free shared buffers cached >Mem: 898672 639876 258796 0 43044 387420 -/+ buffers/cache: 209412 689260 Swap: 2104472 0 2104472 Started new KDE session: $ free > total used free shared buffers cached >Mem: 898672 737620 161052 0 49596 392664 -/+ buffers/cache: 295360 603312 Swap: 2104472 0 2104472 Buffers belong to applications, with new session they went from 209412 kB to 295360 kB and in the same time cache went from 689260 to 603312. $ cat /proc/meminfo gives more information. Though the only explanation is somewhat obsolete: http://www.redhat.com/advice/tips/meminfo.html -- Regards, Rajko. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
