maximum set memory

[rajesh73_1]

Hi ALL

i want to set maximum memory one particular application.

Eg i have 20 gb memory, i want set java application to 2gb

Thanks & regds
raj

[Dennis Handly · Accepted solution]

You need to make sure that your maxdsiz kernel parm is at least 2 Gb.
Note that all applications will be able to use this limit too.

[rajesh73_1]

HI dennis

sorry pls u can explain pls

Regds

[Prasanth V Aravind]

HI Rajesh,

maxdsiz is a hpux kernel parameter which used to defind maximum amount memory , which can be used by
any process in hpux.

As you said your system have 20 GB of memory & you are going run a java process... in this case the java process is not allowed to consume all 20GB memory. it will be able to use up to the maxdsiz limit.

As default limit is

1GB for 32bit application
&
4GB for 64bit application


If you want to check the current setting in your server the command is

kmtune | grep -i maxdsiz ( for 11.11)
kctune | grep -i maxdsiz ( for 11.23 or 31)

Pls check below link for more details
http://nixdoc.net/man-pages/HP-UX/man5/maxdsiz.5.html

Gudluck
Prasanth

[Dennis Handly]

>sorry please you can explain please

Do you want to increase the limit for java or decrease it?

If you want to increase it, it will be increased for every process.

As mentioned by Prasanth, you use kctune(1m) (or kmtune(1m)) to check or change the value of the maxdsiz kernel parm.

[rajesh73_1]

Hi Dennis & prasanth

Thanku very much for ur tips

Regds

[rajesh73_1]

hi

thanku very much