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Full Discussion: Is swap and Shared memory the same ?
Top Forums UNIX for Dummies Questions & Answers Is swap and Shared memory the same ? Post 302815171 by kraljic on Friday 31st of May 2013 05:56:41 AM
Old 05-31-2013
Info you've asked for

Code:
# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.4 (Tikanga)

# uname -a
Linux stomper189 2.6.18-164.el5 #1 SMP Tue Aug 18 11:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux


# mount
/dev/mapper/rootvg-rootvol on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/mapper/rootvg-varvol on /var type ext3 (rw,nosuid)
/dev/mapper/rootvg-homevol on /home type ext3 (rw,nosuid)
/dev/mapper/rootvg-sharedvol on /shared type ext3 (rw,nosuid)
/dev/sda1 on /boot type ext3 (rw,nosuid)
tmpfs on /dev/shm type tmpfs (rw,nosuid)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/mapper/datavg-prodloadvol on /pkms/prod/load type ext3 (rw)
/dev/mapper/datavg-crmprodloadvol on /crm/prod/load type ext3 (rw)
/dev/mapper/datavg-dboraclevol on /db/oracle type ext3 (rw)
/dev/mapper/datavg-pkmsarchive on /pkms/pkmsdb/archive type ext3 (rw)
/dev/mapper/datavg-pkmssystem on /pkms/pkmsdb/system type ext3 (rw)
/dev/mapper/datavg-pkmstbsdata01 on /pkms/pkmsdb/dbs/tbs_data01 type ext3 (rw)
/dev/mapper/datavg-pkmstbsindexvol on /pkms/pkmsdb/dbs/tbs_index01 type ext3 (rw)
/dev/mapper/datavg-crmtbsdata01 on /crm/crmdb/dbs/tbs_data01 type ext3 (rw)
/dev/mapper/datavg-crmtbsindexvol on /crm/crmdb/dbs/tbs_index01 type ext3 (rw)
/dev/mapper/datavg-dbcontrolvol on /db/control type ext3 (rw)
/dev/mapper/datavg-dbadminvol on /db/admin type ext3 (rw)
/dev/mapper/datavg-dbredovol on /db/redo type ext3 (rw)
/dev/mapper/datavg-tempvol on /temp type ext3 (rw)
/dev/mapper/datavg-pkmsfivol on /data/pkmsfi type ext3 (rw)
/dev/mapper/datavg-pkmsd01vol on /pkms/d01 type ext3 (rw)
/dev/mapper/datavg-crmd01vol on /crm/d01 type ext3 (rw)
/dev/mapper/datavg-datacrmdfvol on /usr/oracle type ext3 (rw)

 

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LEARN ABOUT HPUX

swapmem_on

swapmem_on(5)							     OBSOLETE							     swapmem_on(5)

NAME

       swapmem_on - OBSOLETE kernel tunable parameter

DESCRIPTION

       The tunable is obsolete.  Processes will always be allowed to use pseudo-swap space if it is available.

       In previous versions of HP-UX, system configuration required sufficient physical swap space for the maximum possible number of processes on
       the system.  This is because HP-UX reserves swap space for a process when it is created, to ensure that a running process never needs to be
       killed due to insufficient swap.

       This  was difficult, however, for systems needing gigabytes of swap space with gigabytes of physical memory, and those with workloads where
       the entire load would always be in core.  This tunable was created to allow system swap space to be less than core memory.   To	accomplish
       this,  a  portion  of  physical	memory	is  set aside as "pseudo-swap" space.  While actual swap space is still available, processes still
       reserve all the swap they will need at fork or execute time from the physical device or file system swap.  Once	this  swap  is	completely
       used,  new  processes  do  not  reserve	swap, and each page which would have been swapped to the physical device or file system is instead
       locked in memory and counted as part of the pseudo-swap space.

WARNINGS

       Installation of optional kernel software, from HP or other vendors, may cause changes to tunable  parameter  values.   After  installation,
       some  tunable  parameters may no longer be at the default or recommended values.  For information about the effects of installation on tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       was developed by HP.

							     Tunable Kernel Parameters						     swapmem_on(5)
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