[Freeipa-users] virtual memory usage

[Rob Crittenden]

Ivan Levchenko wrote:
> Hi,
> 
> I've gotten through the install without using any special chars only
> to find myself another problem =) (no surprise with luck)
> 
> I'm using OpenVZ on a host with limited ram (and the box is very far
> away with nobody to add some ram, so its not a solution,
> unfortunately) - i have set the virtual memory limit to 600 MiB
> (privvmpages).
> The install went through ok, but as soon as the directory server
> started, it ate up all the virtual memory available to it:
> 
> [root at master /]# ps aux
> USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
> root         1  0.8  0.1   1988   664 ?        Ss   12:21   0:00 init [3]
> root     28218  0.1  0.2   2368  1232 ?        Ss   12:21   0:00
> /bin/bash /etc/rc.d/rc 3
> root     28413  0.0  0.0   1644   560 ?        Ss   12:21   0:00 syslogd -m 0
> root     28416  0.0  0.0   1596   408 ?        Ss   12:21   0:00 klogd -x
> root     28424  0.0  0.2   2508  1268 ?        S    12:21   0:00
> /bin/sh /etc/rc3.d/S21dirsrv start
> dirsrv   28439  1.8  3.1 449468 19248 ?        Sl   12:21   0:00
> /usr/sbin/ns-slapd -D /etc/dirsrv/slapd-MYDOMAIN-COM -i
> /var/run/dirsrv/slapd-MYDOMAIN-COM.pid
> root     28488  0.0  0.0  11200   340 ?        Ss   12:21   0:00 vzctl: pts/0
> root     28489  0.3  0.2   2380  1304 pts/0    Ss   12:21   0:00 -bash
> root     28516  0.0  0.0   1576   404 ?        S    12:21   0:00 sleep 1
> root     28517  0.0  0.1   2096   820 pts/0    R+   12:21   0:00 ps aux
> 
> And I can't start anything else - i keep getting errors that it cannot
> allocate enough memory. I can tweak the privvmpages a bit more, but I
> wanted to ask beforehand if ns-slapd is always so memory hungry?
> 
> based on http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_IPA/1.0/html/Release_Notes/sect-Release_Notes-System_Requirements-Hardware_Requirements.html
> i should have enough memory allocated to the vps. Is there any way to
> trim down ns-slapd's footprint?
> 

Add a swap file/partition?

I've run it in VMWare with 384 MB of RAM. It can be slow due to swapping 
but I've never had the processes fail. I tend to add 1GB of swap space 
though.

rob
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