From: Green, Simon (Simon.Green@EU.ALTRIA.COM)
Date: Mon Apr 14 2003 - 05:58:46 EDT
Once the smaller paging space fills up, the system will carry on and use the
larger ones. The only disadvantage of having differing sizes is that once
the small one's full, you will have a performance hit simply because the
paging is no longer spread across as many disk devices.
I have one system with large paging space requirements where I have a
relatively small hd6, but then two much larger paging spaces in external
volume groups. This hasn't suffered, and it's been like that for several
years.
Simon Green
Altria ITSC Europe s.a.r.l.
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 not be appreciated.
> -----Original Message-----
> From: Shawn Bierman [mailto:BiermanS@METHODISTHEALTH.ORG]
> Sent: 11 April 2003 20:48
> To: aix-l@Princeton.EDU
> Subject: paging facts
>
>
> Greetings,
>
> I've been discussing paging with others that I work with here
> and would like to get some facts straight about paging.
>
> I believe its been written that paging filesystems must all
> be of the same size. AIX uses a round-robin technique for
> paging so keeping them the same size is important. Does this
> mean that if you have unevenly sized paging that if the
> smaller paging fills to 100% that the others will not be used
> and the system will somehow seize up?
>
> We have systems like this, with say hd6 being 512M and a 1G
> paging filesystem in another vg. I've seen where the smaller
> of the two would fill to 100% but the system continues to function.
>
> What are the hard facts regarding paging in AIX 5.1 and 4.3.3
> and what are your experiences?
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