From: Green, Simon (SGreen@KRAFTEUROPE.COM)
Date: Thu Jun 27 2002 - 11:45:08 EDT
There is no point having more than one paging space on a single physical
disk and it can actually reduce performance, (compared with a single, larger
paging space). You should determine how much paging space you require in
total, then distribute that amongst suitable disks, always ensuring that
/dev/hd6 in rootvg is large enough for the system to start. Ideally, all
paging spaces should be the same size, but that is not actually a
requirement.
Simon Green
Philip Morris ITSC Europe
AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
AIX FAQ at http://www.faqs.org/faqs/aix-faq/
N.B. Unsolicited email from vendors will seldom be appreciated.
> -----Original Message-----
> From: Dave.Zarnoch@SUNGARD.COM [mailto:Dave.Zarnoch@SUNGARD.COM]
> Sent: 27 June 2002 16:00
> To: aix-l@Princeton.EDU
> Subject: Re: Problems with paging space
>
>
> Thanks!
>
> Here's what I have now:
>
> Page Space Physical Volume Volume Group Size %Used
> Active Auto
> Type
> paging02 hdisk0 rootvg 4096MB 0
> no yes
> lv
> paging01 hdisk3 vg00 4096MB 21
> yes yes
> lv
> paging00 hdisk2 vg00 4096MB 21
> yes yes
> lv
>
> There is a lot of disk activity on hdisk3 and hdisk2 due to a
> DB app and
> third party
> app running there
> rootvg is VERY quiet
>
> I think I'll try to:
>
> Change the dumpdevice temporarily
> Remove paging02 (on vg00 Second VG)
> Deactivate paging00
> Remove paging00 (on vg00 Second VG)
> Create hd6 (not mirrored) on rootvg
> Create paging00 (not mirrored) on rootvg
> (This way I can utilize the "round robin" method)
> Deactivate paging01
> Remove paging01
> Change the dumpdevice to utilize the space freed
> on vg00.
>
> Does this sound OK?
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