Memory problems on HP-UX 11i

[Anonymous]

In case you want to know some more about swap, memory etc pp have a look at
/usr/shar/doc/mem_mgt.txt

(excellent reading for sleepless nights;-)

[Hartmut Lang]

We had temporary hangs on a B2000 workstation runing HPUX11i with 256 Mb RAM only.
HP support had problems to find out the reason. But finally it was clear that the machine was in "thrashing" phase, because it was low on free RAM. It needs to push many pages from RAM to swap to make space run a new process.

What did help was:
- set swapmem_on to 0 helped something, because it made more pages in RAM available to swap out
- decrease the dbc_max_pct that dynamic buffer cache does not fill to much RAM
- adding another 512 Mb RAM. No problems any more!

HP support told my, that 256 Mb is propably not enough for runing HPUX11i.

Hartmut