topic Re: Reduced Memory System Simulator utility in Operating System - HP-UX

Reduced Memory System Simulator utility

Chuck Lackey — Mon, 18 Dec 2006 17:36:43 GMT

Is there a function or utility in HP-UX 11.23 for reduced memory simulation testing similar to the AIX 5.3 utility 'rmss?' If there is, I can't find it.

Thanks,
Chuck

Re: Reduced Memory System Simulator utility

Bill Hassell — Mon, 18 Dec 2006 17:57:23 GMT

Nothing like rmss on HP-UX. However, the attached program can grab any amount of RAM, write some data into the malloc'ed area and then just sit there. Now that isn't exactly the same situation as removing memory from the kernel. What happens is pretty simple. When processes try to run and there isn't enough RAM, low priority processes will be deactivated and then paged out to swap space. vmstat will show the page out rate.

You may find HP's Glance tool useful to monitor memory usage and performance.

Re: Reduced Memory System Simulator utility

Chuck Lackey — Mon, 18 Dec 2006 18:09:18 GMT

Thanks, Bill. That's what I thought...and I'll pass the utility along to the development team to see if they find it useful for their testing.

Chuck