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Operating Systems AIX Paging is filling up while physical mem still available Post 302932175 by denissi on Monday 19th of January 2015 04:45:19 PM
Old 01-19-2015
Paging is filling up while physical mem still available

Hi, Paging on one of my boxes has been bloating up while physical memory is still available.

Avg Phys Mem - 85% (of 96GB)
Avg Paging: - 55% (of 24GB)

Last week, the box ran out of paging while physical memory still reported 84% usage. Any idea what I'm missing out here?

-------------

Code:
# svmon -G
               size       inuse        free         pin     virtual   mmode
memory     25165824    20297380     4868444     1692023    21262591     Ded
pg space    6291456     3429359

               work        pers        clnt       other
pin          927495           0           0      764528
in use     19824643           0      472737

PageSize   PoolSize       inuse        pgsp         pin     virtual
s    4 KB         -     1790004      415151      975159     1707551
m   64 KB         -     1156711      188388       44804     1222190

---------- Post updated at 04:45 PM ---------- Previous update was at 04:36 PM ----------

P.S. It's a DB server.

DB has been moved to secondary node for now.. here's a few more #s:

Code:
# vmstat -vs
           5171723696 total address trans. faults
              7729177 page ins
             15206379 page outs
               360343 paging space page ins
               883997 paging space page outs
                    0 total reclaims
           3003046207 zero filled pages faults
                72777 executable filled pages faults
             15551550 pages examined by clock
                    0 revolutions of the clock hand
              6490478 pages freed by the clock
              4487540 backtracks
              1222201 free frame waits
                    0 extend XPT waits
              1282211 pending I/O waits
             14715327 start I/Os
              8489466 iodones
           4814472187 cpu context switches
           1334053939 device interrupts
             87866885 software interrupts
           1599354307 decrementer interrupts
                40109 mpc-sent interrupts
                40109 mpc-received interrupts
            557917974 phantom interrupts
                    0 traps
          61863738225 syscalls
             25165824 memory pages
             24386800 lruable pages
             19325298 free pages
                    5 memory pools
              1689051 pinned pages
                 80.0 maxpin percentage
                  3.0 minperm percentage
                 90.0 maxperm percentage
                  1.7 numperm percentage
               415243 file pages
                  0.0 compressed percentage
                    0 compressed pages
                  1.7 numclient percentage
                 90.0 maxclient percentage
               415243 client pages
                    0 remote pageouts scheduled
                31352 pending disk I/Os blocked with no pbuf
                24185 paging space I/Os blocked with no psbuf
                 2228 filesystem I/Os blocked with no fsbuf
                    0 client filesystem I/Os blocked with no fsbuf
                 2981 external pager filesystem I/Os blocked with no fsbuf
                 21.6 percentage of memory used for computational pages

 

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rcapadm(1M)						  System Administration Commands					       rcapadm(1M)

NAME
rcapadm - configure resource capping daemon SYNOPSIS
rcapadm rcapadm [ [-n] -E | -D] [ -i interval=value,...,interval=value] [-c percent] DESCRIPTION
The rcapadm command allows a user with the privileges described below to configure various attributes of the resource capping daemon. If used without arguments, rcapadm displays the current status of the resource capping daemon if it has been configured. See rcapd(1M) for more information. In the current release of the Solaris operating environment, rcapadm is available to users with all privileges and to users who have the Process Management profile in their list of profiles. The System Administrator role includes the Process Management profile. OPTIONS
-n Do not affect the running state of the resource capping daemon when enabling or disabling it. -E Enable the resource capping daemon so that it will be started each time the system is booted. Also start the resource capping daemon now, if the -n option is not specified and it is not currently running. -D Disable the resource capping daemon so that it will not be started when the system is booted. Also stop the resource capping daemon now, if the -n option is not specified and it is currently running. -i interval=value,...,interval=value Set intervals for various periodic operations performed by rcapd. All intervals are specified in seconds. You can set the following intervals: scan The interval at which rcapd scans for new processes. The default scan interval is every 15 seconds. The minimum value is 1 second. sample The interval of process resident set size sampling. The default sample interval is every 5 seconds. The minimum value is 1 second. report The interval at which various paging statistics are updated by rcapd, in seconds. These statistics can be viewed by using rcap- stat(1SRM). The default reporting interval is every 5 seconds. When the interval is set to 0, statistics will not be updated. Note - Paging refers to the act of relocating portions of memory, called pages, to or from physical memory. rcapd pages out the most infrequently used pages. config The reconfiguration interval, in seconds. At each reconfiguration event, rcapd checks its configuration file for updates, and scans the project databases for new project caps. The default reconfiguration interval is every 60 seconds. The minimum interval is 0. When the interval is set to 0, no periodic reconfiguration occurs, although the running daemon can still be reconfigured by sending it SIGHUP. -c percent Set the minimum physical memory utilization for memory cap enforcement. Caps will not be enforced until the physical memory available to processes is low. The percent value should be in the range 0 to 100. The minimum (and default) value is 0, which means that memory caps are always enforced. EXAMPLES
Example 1: Configuring the Resource Capping Daemon with Immediate Enforcement # rcapadm -E -i scan=15,sample=5,report=5,config=60 -c 0 EXIT STATUS
The following exit values are returned: 0 Successful completion. The modifications to the current configuration were valid and made successfully. 1 An error occurred. A fatal error occurred either in obtaining or modifying the resource capping configuration. 2 Invalid command-line options were specified. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWrcapu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
rcapstat(1), rcapd(1M), project(4), attributes(5) "Physical Memory Control Using the Resource Capping Daemon" in System Administration Guide: Network Services SunOS 5.10 10 Dec 2003 rcapadm(1M)
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