On Wed, Apr 25, 2012 at 7:21 AM, Andrew Martin <amar...@xes-inc.com> wrote:
> Hello,
>
> I am running a VM with Ubuntu Server 10.04 amd64. I have installed and
> configured cgroups to limit the resources available to samba, nfs, and
> apache. My configuration is as follows:
> /etc/cgconfig.conf
> group nfs {
> memory {
> memory.limit_in_bytes = 500M;
> memory.memsw.limit_in_bytes = 1000M;
> }
> cpu {
> cpu.shares = 10;
> }
> }
>
> group smb {
> memory {
> memory.limit_in_bytes = 1500M;
> memory.memsw.limit_in_bytes = 2000M;
> }
> cpu {
> cpu.shares = 13;
> }
> }
>
> group apache {
> memory {
> memory.limit_in_bytes = 6G;
> memory.memsw.limit_in_bytes = 6G;
> memory.swappiness = 5;
> }
> cpu {
> cpu.shares = 100;
> }
> }
>
>
> mount {
> cpu = /mnt/cgroups/cpu;
> cpuacct = /mnt/cgroups/cpuacct;
> memory = /mnt/cgroups/memory;
> cpuset = /mnt/cgroups/cpuset;
> }
>
> /etc/cgrules.conf
> ## Samba Server
> root:/usr/sbin/smbd cpu,memory smb/
> root:/usr/sbin/nmbd cpu,memory smb/
>
> ## NFS Server
> root:/usr/sbin/exportfs cpu,memory nfs/
> root:/usr/sbin/rpc.mountd cpu,memory nfs/
> root:/usr/sbin/rpc.nfsd cpu,memory nfs/
> root:/usr/sbin/rpc.svcgssd cpu,memory nfs/
> root:nfsd cpu,memory nfs/
> root:nfsd4 cpu,memory nfs/
>
> ## Apache Webserver
> root:apache2 cpu,memory apache/
> www-data cpu,memory apache/
>
> Both memory.limit_in_bytes and memory.memsw.limit_in_bytes seem to
> work fine for the smb cgroup, but no matter what values I use for the
> apache cgroup I cannot set memory.memsw.limit_in_bytes.
How much total memory do you have on the system? How is total RAM + Swap?
> My goal is to
> disable apache's ability to swap by setting memory.limit_in_bytes and
> memory.memsw.limit_in_bytes to the same value (or
> memory.memsw.limit_in_bytes slightly higher). After running "service
> cgconfig restart" to restart the cgconfig service, I check the value
> of memory.limit_in_bytes and memory.memsw.limit_in_bytes for the
> apache group:
> # cat /mnt/cgroups/memory/apache/ memory.limit_in_bytes
> 6442450944
> # cat /mnt/cgroups/memory/apache/ memory.memsw.limit_in_bytes
> 9223372036854775807
>
> The value for memory.memsw.limit_in_bytes is not being initialized. I
> cannot find any related errors in /var/log. I have tried a number of
> different values for memory.memsw.limit_in_bytes, however it will not
> initialize properly. The only error I can see occurs when I restart
> the cgroups service:
> Stopping cgconfig service: rmdir: failed to remove `./smb': Device or
> resource busy
> sed: couldn't flush stdout: No such process
> rmdir: failed to remove `./sysdefault': Device or resource busy
> sed: couldn't flush stdout: No such process
> rmdir: failed to remove `./sysdefault': Device or resource busy
> sed: couldn't flush stdout: Invalid argument
> rmdir: failed to remove `./sysdefault': Device or resource busy
> *
> Starting cgconfig service:
>
> What else can I try in order to properly initialize
> memory.memsw.limit_in_bytes? I can temporarily echo a value to it (e.g.
> echo 6442450944 > /mnt/cgroups/memory/apache/ memory.memsw.limit_in_bytes)
> which does appear to work , but
> would prefer a permanent solution.
>
>
I'll try and reproduce your problem once I get the HW info above
Balbir
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