NonStop Server for Java 7.0 Programmer's Reference

$ gtacl –p nskcom

NSKCOM - T5838H02 BASE (15AUG12) - Jun 13 2012

$SYSTEM.SYSTEM.ZSYSCFG

KMS.SWAPFILE = 0 $DATA03.SWAP.CPU0A STOP

KMS.SWAPFILE = 0 $DATA03.SWAP.CPU0B STOP

KMS.SWAPFILE = 5 $SWAP45.SWAP4.CPU05

NSK-status swap-usage 1,525 ,detail

SYSTEM : \SYSTEM1 LOGTIME : June 26, 2012 13:57:14

TYPE : (E=Extensible S=Shared)

(CPU Page size is 16384 Bytes)

Following is the output for the preceded commands:

Program File NameUser-IDPriProcess

$JAVDV01.ZYQ00003.Z000Q3GF200,1311,525

KMSF-BACKED SEGMENTS: (Process Space Guarantee = -- )

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

SEG-ID TYPE SIZE RESERVATION

KBYTE PAGES KBYTE

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

Heap+Global+SRL+Stack 69 MB 1917 29 MB

1068 16 1 16

1069 64 MB 16384 64 MB

1065 64 MB 4096 64 MB

1067 1088 MB 69636 1088 MB

2100 8B 1 16

2101 8B 1 16

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

TOTAL 92034 1246 MB

FILE-BACKED SEGMENTS: None

______________________________________________________________________________

NSK-

In the preceding output, the JVM process uses 1246 MB of swap space and has six segments

allocated. The JVM process was started with a heap size of 1024 MB, which shows that apart

from the Java heap, the process requires about 222 MB of process-specific and application-specific

data.

NOTE: To get an applicable sample of the swap usage for a particular JVM process, check this

swap usage at steady state, where all the native components used by the JVM are fully initialized

and running.

For related tuning guides, see Tuning Guide for iTP Secure WebServer and NonStop Servlets for

JavaServer Pages (NSJSP) on HP NonStop Servers.

90 Application tuning and profiling