Re: CHGPF time

[Luis Rodriguez <luisro58@xxxxxxxxx>]

Rob,

You have redefined the meaning of the word "envy" for me... :-)

Your SSD utilization seems a little bit high. Also, on the URL I
posted before, they have a nice chart on the impact of having a lot of
main memory over performance.

Regards,

Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries



On Mon, Jan 18, 2010 at 11:11 AM,  <rob@xxxxxxxxx> wrote:
> I installed my 4 SSD's over the weekend.
> I did the DSPOBJD of the desired libraries to an output file.
> Then I ran a little sql which passed the object and library via qcmdexc to
> CHGPF and CHGLF.  Over thousands objects it only took about 8 minutes.
> Then I saved the libraries, deleted them and restored them.
> After some time my ninety 70GB drives and my new SSD's were somewhat in
> balance.
>
> All good.
>
> At the same time I added forty eight 139GB HDD's.  All drives are raid 5
> with no hot spare and are all in asp 1.  I didn't add one of the new 48 to
> the asp - just the raid set.  Reserving that one drive for load source
> migration.
>
> Then I ran the STRASPBAL *ENDALC on disks 2 through 90.  Fired off the
> STRASPBAL *MOVDTA.  Drives 2 - 90 are down to about 0.2% used.  Good.
> However my load source and my SSD's are now about 98%.  The 47 other new
> drives are 44% used.  Not good.  Not much good came out of
> STRASPBAL TYPE(*CAPACITY) ASP(1) TIMLMT(*NOMAX)
> Date sent  . . . . . . :   01/18/10      Time sent  . . . . . . : 09:35:26
> CPI1474 - ASP balancing successfully started for ASP 1.
> Date sent  . . . . . . :   01/18/10      Time sent  . . . . . . : 09:35:55
> CPI1475 - ASP balancing for ASP 1 ended.
>
> I get these somewhat in balance my intention is perhaps then run a
> TRCASPBAL followed by a STRASPBAL *USAGE to maximize performance of my
> HDD's.  Then I may run another TRCASPBAL followed by a STRASPBAL *HSM to
> put high impact stuff on SSD (and get the low impact the heck off!).
>
> Rob Berendt
> --
> Group Dekko Services, LLC
> Dept 01.073
> Dock 108
> 6928N 400E
> Kendallville, IN 46755
> http://www.dekko.com
>
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