[CentOS] Trouble with Mailman

Sun Nov 13 16:15:15 UTC 2011
Reindl Harald <h.reindl at thelounge.net>

Am 13.11.2011 14:32, schrieb John J. Boyer:
> On Sat, Nov 12, 2011 at 09:45:04AM -0600, Johnny Hughes wrote:
>> Linux puts things in cache using extra (unused) memory.  It is
>> absolutely normal to have "Free Memory" go down to a fairly small level
>> and have Buffers and Cache grow

> Why does Linux do this? It seems odd to me

because taht is why linux is in some cases thousand times faster
as reading the same things over and over from the disk and why
would you install many GB memory if it is unused

target of a modern operating system is using 16 GB of 16 GB memory
after some time and if any application requests actively
memory the oldest caches/buffers are reclaimed to the app

[harry at srv-rhsoft:~]$ uptime
 17:14:54 up  3:54,  6 users,  load average: 0.00, 0.04, 0.12

[harry at srv-rhsoft:~]$ free -m
             total       used       free     shared    buffers     cached
Mem:         16035      15366        668          0        118      12951
-/+ buffers/cache:       2296      13738
Swap:         2047          0       2047

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