Re: Where is all that CPU going?

OK, something is going on with jobs in System pool 6. 1343 pages in non-database and 1596 pages in database seems too high to me. Pool 2 is a bit high as well. It would appear that this box is memory constrained and there is a great deal of CPU being used to manage memory (paging and faulting) Faulting is not out of whack but paging is. Your observation is 2 hours old. Try F10 to reset and get a look at the system with about 6 - 10 minutes. That will give you a much better look at what's up.

Check and see what's running in pool 6 and *BASE. Also since temp addresses are up a bit (not worrisome but up a bit) that implies there is JAVA and/or PASE activity going on.

If this is a new phenomenon, did someone steal memory from this partition? Check to see if the auto tune system values are turned on or off. In a memory constrained condition manual tuning is more efficient. You might also check to see if the shared pools were messed with (wrkshrpool, F11 a couple of times gets you to tuning stuff).



Jim Oberholtzer
CEO/Chief Technical Architect
Agile Technology Architects, LLC


On 10/26/2010 2:55 PM, James H. H. Lampert wrote:

WRKSYSSTS looks like around 51% of the system ASP in use. As to the
whole thing:

% CPU used . . . : 142.0 Auxiliary storage:
% DB capability : 22.6 System ASP . . . . . . : 4516 G
Elapsed time . . : 02:13:41 % system ASP used . . : 51.2921
Jobs in system . : 4316 Total . . . . . . . . : 4516 G
% perm addresses : .445 Current unprotect used : 116164 M
% temp addresses : 14.807 Maximum unprotect . . : 131353 M


Type changes (if allowed), press Enter.



System Pool Reserved Max -----DB----- ---Non-DB---

Pool Size (M) Size (M) Active Fault Pages Fault Pages

1 1687.55 205.52 +++++ .0 .0 57.8 60.1

2 1286.27 120.21 248 205.1 3800 414.2 1021

3 300.00 .00 64 50.2 188.9 106.1 235.9

4 10.00 .00 5 20.9 221.5 11.7 29.7

5 1555.41 .00 172 54.6 744.3 130.1 308.2

6 1874.57 .03 80 86.4 1596 289.2 1343
7 158.94 .05 23 .6 1.1 31.8 60.0


As to what WRKDSKSYS looks like, it looks like:

> Command WRKDSKSYS in library *LIBL not found.

If you really meant WRKDSKSTS, it shows 53 drives(!), ranging in
utilization from 49.7% to 53.9%

The box in question is a 550, running 3 LPARs. (53 drives?!?)