At 08:39 AM 11/7/2007, Mario Lobo wrote:

I'm running a qmailrocks install + DNS server here. Hosting 14 domains and
their respective e-mail accounts. Everything seems to be working fine.

The machine is:

FreeBSD 6.2-STABLE #0: Mon Sep 10 14:15:16 BRT 2007
CPU: Intel(R) Core(TM)2 CPU  6700  @ 2.66GHz (2669.94-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x6f6  Stepping = 6
  Cores per package: 2
real memory  = 3488481280 (3326 MB)
avail memory = 3362598912 (3206 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1

When I turn the machine on/restart it, it starts off with around 2800 Mb free
memory. I know that, in its course of work, a few of those processes do not
properly return memory back to the system. The machine was last restarted
exactly a week ago (last wednesday). Now 'top' shows me this:

last pid: 17204;  load averages:  0.00,  0.04,  0.06   up 5+21:00:50  11:18:58
135 processes: 1 running, 132 sleeping, 2 zombie
CPU states:  0.6% user,  0.0% nice,  0.4% system,  0.2% interrupt, 98.9% idle
Mem: 379M Active, 1915M Inact, 256M Wired, 119M Cache, 214M Buf, 415M Free
Swap: 5120M Total, 5120M Free

Here are my questions:

Is this a "normal thing" to happen with memory in just one week?
Does the  '1915M Inact'  means "zombie memory" (non-returned)?
Is there a manual garbage collector i could run?
What is your advise on what method I could use to precisely track down what
program(s) is(are) causing this?

I am attaching a png graphic of this.


I have seen memory "eaten up" by running anti-virus and mail scanning software particularly if you are not bouncing spam. I would check your spam handling.


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