[ClusterLabs] [Question] The memory which crmd uses increases at every re-check.

[renayama19661014 at ybb.ne.jp]

Hi All,

We operated pacemaker for several days and confirmed increase of the memory of the crmd process.

The constitution is the following simplicity.
In addition, the node is one.

---------------------------------
[root at snmp1 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 6.5 (Santiago)

[root at snmp1 ~]# crm_mon -1 -Af
Last updated: Mon Mar 23 08:50:10 2015
Last change: Fri Mar 20 13:19:46 2015
Stack: corosync
Current DC: snmp1 (3232238180) - partition WITHOUT quorum
Version: 1.1.12-e32080b
1 Nodes configured
7 Resources configured


Online: [ snmp1 ]

 Resource Group: grpNFSclient
     prmVIPcheck        (ocf::heartbeat:Dummy): Started snmp1 
     prmIpNFSclient     (ocf::heartbeat:Dummy): Started snmp1 
     prmFsNFSclient     (ocf::heartbeat:Dummy): Started snmp1 
     prmInitRpcidmapd   (ocf::heartbeat:Dummy): Started snmp1 
 Clone Set: clnDiskd [prmDiskd]
     Started: [ snmp1 ]
 Clone Set: clnPing [prmPing]
     Started: [ snmp1 ]
 Clone Set: clnRpcbind [prmRpcbind]
     Started: [ snmp1 ]

Node Attributes:
* Node snmp1:
    + default_ping_set                  : 100       
    + diskcheck_status_internal         : normal    
    + ringnumber_0                      : 192.168.10.100 is UP
    + ringnumber_1                      : 192.168.20.100 is UP

Migration summary:
* Node snmp1: 
---------------------------------

But I shorten the time for re-check.

---------------------------------
(snip)
property no-quorum-policy="ignore" \
        stonith-enabled="false" \
        cluster-recheck-interval="5s"
(snip)
---------------------------------

The memory to use of crmd increases at every re-check somehow or other.(RSS Size)

---------------------------------
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
Fri Mar 20 13:20:03 JST 2015
496      24010  0.1  0.3 152944  8068 ?        Ss   13:19   0:00 /usr/libexec/pacemaker/crmd

--------------
Fri Mar 20 13:21:56 JST 2015
496      24010  0.0  0.4 152944  8744 ?        Ss   13:19   0:00 /usr/libexec/pacemaker/crmd
--------------
Fri Mar 20 13:32:15 JST 2015
496      24010  0.0  0.5 152944 10712 ?        Ss   13:19   0:00 /usr/libexec/pacemaker/crmd
--------------
Fri Mar 20 14:44:57 JST 2015
496      24010  0.0  0.7 152944 14256 ?        Ss   13:19   0:04 /usr/libexec/pacemaker/crmd
--------------
Fri Mar 20 15:19:30 JST 2015
496      24010  0.0  0.7 152944 14564 ?        Ss   13:19   0:06 /usr/libexec/pacemaker/crmd
--------------
Mon Mar 23 08:47:52 JST 2015
496      24010  0.0  0.9 152944 19100 ?        Ss   Mar20   3:25 /usr/libexec/pacemaker/crmd
[root at snmp1 ~]# date;free
Mon Mar 23 09:01:47 JST 2015
             total       used       free     shared    buffers     cached
Mem:       2029900    1255892     774008          0     225956     825204
-/+ buffers/cache:     204732    1825168
Swap:      1048568          0    1048568
--------------
Mon Mar 23 10:32:51 JST 2015
496      24010  0.0  0.9 152944 19104 ?        Ss   Mar20   3:52 /usr/libexec/pacemaker/crmd
[root at snmp1 ~]# date; free
Mon Mar 23 10:34:09 JST 2015
             total       used       free     shared    buffers     cached
Mem:       2029900    1264108     765792          0     225996     833128
-/+ buffers/cache:     204984    1824916
Swap:      1048568          0    1048568
---------------------------------

The memory increases after this.
 * The distance of the increase becomes the degree for 1-2 hours.


The increase of this memory seems to be seen in other processes.
Does the increase of this memory not have any problem?
Which processing is the increase of this memory caused by?

Best Regards,
Hideo Yamauchi.