09-07-2014
Well basically no matter how much 'free' memory the system has - with minperm set to 20% the host will inevitably page when it uses 34GB memory computational out of 36GB available - especially as long as numperm is at 20%.
As zaxxon said, fix the minperm setting (to 3% or 5%) and figure out if you really need to keep cached content in memory even though the corresponding IO has been completed. If not mount your filesystems with rbrw option. Not sure if you mentioned if this is an app or a DB server - but if its i.e. oracle, you may want to consider cio and/or filesystem_io_options=SETALL
Regards
zxmaus
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LEARN ABOUT CENTOS
lssubsys
LSSUBSYS(1) libcgroup Manual LSSUBSYS(1)
NAME
lssubsys - list hierarchies containing given subsystem
SYNOPSIS
lssubsys [-m|--mount-points] [-M|--all-mount-points] [controller] [...]
lssubsys [-m|--mount-points] [-M|--all-mount-points] [-i|--hierarchies] [-a|--all]
lssubsys [-h|--help]
DESCRIPTION
lssubsys list the hierarchies containing the given subsystem(s). If no subsystem is defined, it displays all mounted hierarchies.
controller
defines the subsystem whose hierarchy is shown. If this parameter is not used, the command will list all mounted subsystems.
-m, --mount-points
Display mount points. Only the first mount points of shown hierarchies are displayed.
-M, --all-mount-points
Display mount points. All mount points of shown hierarchies are displayed, each on separate line.
-a, --all
Display all subsystems (including unmounted ones).
-i, --hierarchies
Display the attached hierarchy number if the subsystem is in a hierarchy. If the option -m is also used, the hierarchy number is
shown only for unmounted hierarchies.
-h, --help
Display help and exit.
EXAMPLE
The command lssubsys -am lists all subsystems which are present in the system, mounted ones will be shown with their mount point:
$ lssubsys -am
ns
cpuset
cpu,devices
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
The command lssubsys -ami lists all subsystems which are present in the system, mounted subsystems are listed with their mount points,
unmounted ones which are in a hierarchy are listed with their hierarchy number:
$ lssubsys -ami
ns
cpuset 5
cpu,devices 6
cpuacct /cgroup/cpuacct
memory /cgroup/memory
freezer /cgroup/freezer
net_cls /cgroup/net_cls
ENVIRONMENT VARIABLES
CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.
SEE ALSO
lscgroup (1), cgcreate (1), cgdelete (1), cgconfig.conf (5)
Linux 2009-11-05 LSSUBSYS(1)