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Operating Systems AIX High Paging when lots of free memory AIX 5.3 Post 302916099 by zxmaus on Sunday 7th of September 2014 05:04:37 AM
Old 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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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)
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