added page space on diff disk but util is not balanced out

[WiccaChic]

Howdy all. I added 3 gig of paging space to a seperate disk and activated, however my paging utilization (lsps -a) has not balanced out across both disks. I was expecting this based on the performance redbook which indicates paging allocation would be round robin between disks. Any thoughts? Heres lsps:
Page Space Physical Volume Volume Group Size %Used Active Auto Type
paging00 hdisk6 admin 3072MB 1 yes yes lv
hd6 hdisk9 rootvg 3072MB 58 yes yes lv

 

[unixfreak]

It will not move data around but will use round robin for new pages written to the paging space.

Depending on how much paging goes on, it will take a while to even out.

Cheers

 

[RodKnowlton]

Have you rebooted since creating and activating the new paging space?

How much real memory does the system have? The default paging space (hd6) is activated earlier in the initialization process than any others, although it would take a concentrated effort and a low physical memory system to page 1.5GB out before the second space was activated.



Rod Knowlton
IBM Certified Advanced Technical Expert pSeries and AIX 5L

 

[WiccaChic]

I have 8 gig of mem and I have not rebooted. I guess I will do that tonight and except for what the OS pages out at sysup (which will use hd6), I can expect to see an even distribution as allocation occurs?

 

[RodKnowlton]

That's what I'd expect, especially since you hadn't rebooted since the change.



Rod Knowlton
IBM Certified Advanced Technical Expert pSeries and AIX 5L

 

[sbix]

The fact is:
The majority of the mem pages your system is using were allocated on the paging volume existing before the add of the new ones .... nobody will move them to another place until the related processes will die.
Probably you will achieve the same goal by turning off and turning on your application