Mapped more than Cached in /proc/meminfo

[=/_00/\/\]

Hi,

Thanks for replying
Here is one observation worth mentioning.
On boot system it shows Mapped < Cached (In fact much less)
After using system for some time following commands are executed.
# sync and echo 3 > /proc/sys/vm/drop_cache

Whenever above command is executed I can see Mapped > Cached.

This is somewhat confusing for me.
Could you please explain ?

Regards,
  ~/



On Sat, Aug 6, 2011 at 9:57 AM, Mulyadi Santosa
<mulyadi.santosa at gmail.com>wrote:

> On Fri, Aug 5, 2011 at 21:16, =/_00/\/\ <z0032oom at gmail.com> wrote:
> > Hi,
> >
> > I am trying to analyze memory usage on my system.
> > As first step I am monitoring /proc/meminfo.
> > Surprisingly I see Mapped value is more than Cached.
> >
> > So in which case is it possible to have Mapped more than Cached ?
>
> your apps mmap() less than the amount of files content that are cached
> through normal read() AFAIK
>
>
> --
> regards,
>
> Mulyadi Santosa
> Freelance Linux trainer and consultant
>
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com
>
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