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Prstat rss and swap

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Operating Systems Solaris Prstat rss and swap
# 8  
Old 06-18-2013
Quote:
Originally Posted by jlliagre
The RSS value is always less than or equal than the SWAP value, but both of these are dynamic.
SWAP is not a hard limit as the process is free to allocate more memory, i.e. increase its prtstat SWAP value.
Your process should be able to allocate more virtual memory unless the OS has no more virtual memory free or if the process itself has a hard limit configured (eg: java -Xmx).
Use "swap -s" to figure it out.
Hi jlliagre,

where can i configure the hard limit for a process?

thanks,
# 9  
Old 06-18-2013
Most processes have no hard limit configured.
32-bit processes have a 4 GiB technical limit.
Java processes (JVMs) have a hard limit for their heap size set with the -Xmx option. It is normally set in the script that launch them.

Please post:
Code:
ptree pid
pargs -a pid

output after replacing pid by the process id of the java command you are investigating (was 12503).
# 10  
Old 06-18-2013
Quote:
Originally Posted by jlliagre
Most processes have no hard limit configured.
32-bit processes have a 4 GiB technical limit.
Java processes (JVMs) have a hard limit for their heap size set with the -Xmx option. It is normally set in the script that launch them.

Please post:
Code:
ptree pid
pargs -a pid

output after replacing pid by the process id of the java command you are investigating (was 12503).
thanks very much jlliagre and herpg. Smilie

please share some commands to investigate a process, memory utilization of pid.
# 11  
Old 06-18-2013
Code:
man pmap
man truss
man tusc
man strace

(may depend on your OS)
# 12  
Old 06-18-2013
Quote:
Originally Posted by sunnys7143
please share some commands to investigate a process, memory utilization of pid.
A good start would be to post the output of the commands I already suggested.

In addition, swap -s and swap -l when you are close to the limit might help.
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