topic Re: Load / Stress Testing in Operating System - HP-UX

Load / Stress Testing

Tim Wescott_3 — Mon, 03 Oct 2005 10:52:19 GMT

Hello

I have a k360 running HP-UX 11i and Oracle 9i and users are complaining that the system is slow - It has quad processors and 3Gb of RAM.

I know the system is relatively old and that upgrading may be a suggestion from some of you, but are there any load or stress testing utilities that will monitor the system during normal operation and highlight bottle necks whether it's on disks, cpu's or whatever?

Any help / advice appreciated.
Thanks
Tim

Re: Load / Stress Testing

Geoff Wild — Mon, 03 Oct 2005 11:02:15 GMT

Well...you could use an utility like glance to monitor load.

Is the system swapping? IE - are you out of ram?

What is dbc_max_pct set to? if it is the default of 50%, then drop it...as you only need about 500MB for Buffer Cache....

Rgds...Geoff

Re: Load / Stress Testing

baiju_3 — Mon, 03 Oct 2005 11:04:14 GMT

hi ,

Server utilisation you can monitored using

top,
sar,
iostat ,
swapinfo,
netstat -s
glance and perfview (licensed)

Glance and Perfview are very good s/w and they are priced also.

See man pages for the OS first 4 OS commands for deatils.

Also "timex" command can be used along with dd to find out the disk performance delays during normal and peak hours .

Syntax
timex dd if=/dev/dsk/c?t?d? of=/dev/null bs=512 count=your count (no of blocks)

Note the time taken for teh command to complete during diff intervals for analysis.

You may also verify the kernal parameters and the buffer size allocated (in case disk related performance issue)

thx,
bl.

Re: Load / Stress Testing

Jean-Luc Oudart — Mon, 03 Oct 2005 11:56:24 GMT

Hi

from Oracle prospective you should run the statspack report.

Regards
Jean-Luc

Re: Load / Stress Testing

Nobody's Hero — Mon, 03 Oct 2005 13:22:41 GMT

An extra layer of software you could use, might want to try "LoadRunner" by mercury.
Available for trial download on the web.