DCE-RPC-Server Connection limitation in mixed-mode

[Grischa]

I run a DCE-RPC-Server application built on HP-UX 11.11 (PA-RISC) on HP-UX 11.23 (IA64). The concurrent client connections are limited to 70 or less (depends on rpc_server_listen parameter max_calls_exec) When running on 11.11 or running a IA64-version built on 11.23, more connections are possible. Is this limitation because of the mixed-mode emulator ?

[Steven E. Protter]

Shalom,

It could also be kernel parameters on the system.

kctune (IA64)
kmdtune (PA-RISC 11.11)

Compare such paramters as:
nproc
nfile
maxuprc

SEP

[Grischa]

Hi,
I found out that the IA64-version of the rpc-server is also limited to accept only 182 connections. I increased the kernel parameter max_thread_proc from 256 to 2048, now the IA64-version accepts more connections. Unfortunately the PA-RISC-Versions connection number did not increase.

[Grischa]

Found the solution: PA-RISC code is executed by the Dynamic Object Code Translator (aries). The aries can be configured by setting parameters in a configuration file (e.g. $HOME/.ariesrc). By default max. number of thread is 86 and can be increased by setting paremeter -heap_ssz.
Thanks for help,
Grischa

[Grischa]

Bye