topic how much memory can a process use in hp ux server in Operating System - HP-UX

how much memory can a process use in hp ux server

jerish sunny — Tue, 11 May 2010 05:37:34 GMT

I am having a HP-UX B.11.23 U ia64 server. I am running a Java application in it.

It has a heap of 2Gb and when it spawns around 420 threads the application fails.

I want to how much memory can a process use in hp ux server. Is there any limitation for java process.

my kcusage parameters is shown below:
Tunable Usage / Setting
=============================================
dbc_max_pct 19 / 20
maxdsiz 167616512 / 2063835136
maxdsiz_64bit 46587904 / 7516192768
maxfiles_lim 322 / 10000
maxssiz 524288 / 134217728
maxssiz_64bit 90112 / 1073741824
maxtsiz 3084288 / 100663296
maxtsiz_64bit 2764800 / 2147483648
maxuprc 15 / 256
max_thread_proc 273 / 3500
maxvgs 4 / 10
msgmni 2 / 16388
msgseg 0 / 32767
msgtql 0 / 16388
nfile 2427 / 65536
nflocks 33 / 4096
ninode 2018 / 133152
nkthread 1262 / 17000
nproc 234 / 16388
npty 0 / 60
nstrpty 2 / 60
nstrtel 0 / 60
nswapdev 2 / 10
nswapfs 0 / 10
semmni 41 / 8192
semmns 99 / 16384
shmmax 32681472 / 12884901888
shmmni 44 / 1024
shmseg 24 / 1024

Re: how much memory can a process use in hp ux server

Burak Topal — Tue, 11 May 2010 05:47:21 GMT

Hi,
Take a look at this..

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1026082

Re: how much memory can a process use in hp ux server

Prasanth V Aravind — Tue, 11 May 2010 06:21:04 GMT

maxdsiz 167616512 / 2063835136
maxdsiz_64bit 46587904 / 7516192768

these are the parameter which define the data size of a process & the values are in bytes..

The current setting limits are 2GB for 32bit application & 7GB for 64bit application

Gudluck
Prasanth

Re: how much memory can a process use in hp ux server

Dennis Handly — Tue, 11 May 2010 09:14:42 GMT

If you don't have any JNI, you can use -d64 to have java use 64 bit JVM.