Problems with RP7400

[Martin Moriyama Nakaoka]

Somebody know why, if we made an upgrade from a N4000,6 CPU of 550 MHZ and 2 GB of memory to RP7400 with 5 CPU of 750MHZ and 5 GB of memory running people soft with informix 7.31 uc2 the performance is very bad. Thank you

[harry d brown jr]

This really belongs in the HPux System Admin area:

Did you "tune" the kernel??

Did you increase swap?

Did you install a new version of the OS, or did you apply any patches?

If you used the "sam" kernel tuning option, then your machine would most likely behave slowly.

Could you post your kernel parameters, ioscan, and vg info?

live free or die
harry

[Michael Tully]

Hi,

In addition to what Harry has requested.

How much swap do you have and is it distributed across more than just the internal disks?

What type of external disk array are you using?

How many informix instances are your running on this server. Peoplesloth is notorious when it comes to tuning, and being extremely system hungry!!

-Michael

[Patrick Wallek]

Did you apply any of the tuned kernel parameter templates? If so, check your kernel paramter TIMESLICE and make sure it is not set to 1. If it is 1, reset it to 10, recompile the kernel and reboot.

[Bill McNAMARA_1]

Have you run any tools such as sar, top, vmstat or iostat to try to identify the bottle neck?

See http://www.hp.com/products1/unix/java/infolibrary/prog_guide/java1/measuring_sys_performance.html for a way to identify performance bottlenecks.
(even though it's java related, it still applies)

Later,
Bill

[Martin Moriyama Nakaoka]

Yes, we increased the swap,
No we didnt install a new version, Hp installed a patch to recognize the CPU 750 Mhz. Because the HP-ux 11.00 dont support this CPU's.
The external disks are EMC2 8730
We only have one instance of informix.
Aparently, I dont see any bottle neck

Regards