memory problem when using java

[Neelesh Tripathi_1]

Hi,
I am getting some error related to memory when excuting java program in HPUX.

Warning:system call pthread_create failed.
return value: 11
errno: 22
parameter:thread = 4a
attr = 48
start_routine = 7aea8656
arg = a402f0
startup java.lang.OutOfMemoryError: unable to create new native thread

Do I need to change any patches or kernel parametres .

Thanks

Neelesh

[Armin Feller]

This was due to hitting the limit imposed by the nkthreads kernel parameter. Please increase this kernel tunable.

http://docs.hp.com/hpux/onlinedocs/939/KCParms/KCparam.NkernelThreadsMax.html

[Tim Adamson_1]

Make sure you have the required patches installed.

Make sure you have enough swap. 2* RAM is a good estimate.

Make sure that maxdsiz is large enough (as a guess, set it to 1Gb)

Make sure nkthreads and max_thread_proc are high enough.

Also ensure other basic kernel parameters are high enough too (nproc, etc)

They are some suggestions.

You would need to post some more details about your server configuration for further help - kernel parameters (kmtune/sysdef, swapinfo -tam, amount of RAM, etc).


Tim.