Excessive Page INs Post: 101959

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Operating Systems AIX Excessive Page INs Post 101959 by bakunin on Tuesday 14th of March 2006 02:34:36 PM

03-14-2006

Registered User

Negm, be aware that there is a fundamental difference between AIX versions prior to 4.3.3 ML10 (aka "AIX 4.4") and after this version. Before 4.3.3 ML10 AIX had an "early swap allocation strategy", that means that as a program got started the page necessary to swap it out was allocated even if it was held in memory. That meant that usage rates of 60% or more weren't that troublesome at all because "swapspace used" was meaning "swapspace marked in use for eventually swapping out something now in memory". Only vmtstat could tell you the real state of the machine.

With AIX 4.3.3 ML10 that changed to a "late swap allocation strategy", like the othere major UNIX vendors employed. Swapspace is now allocated only as it is (really) needed, meaning, when processes are being swapped out of memory.

In short: without knowing which AIX version you are talking of it is simply impossible to find out what is going on on your machine.

bakunin

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pdf::api2::basic::pdf::page

PDF::API2::Basic::PDF::Page(3pm)			User Contributed Perl Documentation			  PDF::API2::Basic::PDF::Page(3pm)

NAME

       PDF::API2::Basic::PDF::Page - Represents a PDF page, inherits from PDF::API2::Basic::PDF::Pages

DESCRIPTION

       Represents a page of output in PDF. It also keeps track of the content stream, any resources (such as fonts) being switched, etc.

       Page inherits from Pages due to a number of shared methods. They are really structurally quite different.

INSTANCE VARIABLES

       A page has various working variables:

       curstrm
	   The currently open stream

METHODS

   PDF::API2::Basic::PDF::Page->new($pdf, $parent, $index)
       Creates a new page based on a pages object (perhaps the root object).

       The page is also added to the parent at this point, so pages are ordered in a PDF document in the order in which they are created rather
       than in the order they are closed.

       Only the essential elements in the page dictionary are created here, all others are either optional or can be inherited.

       The optional index value indicates the index in the parent list that this page should be inserted (so that new pages need not be appended)

   $p->add($str)
       Adds the string to the currently active stream for this page. If no stream exists, then one is created and added to the list of streams for
       this page.

       The slightly cryptic name is an aim to keep it short given the number of times people are likely to have to type it.

   $p->ship_out($pdf)
       Ships the page out to the given output file context

perl v5.14.2							    2011-03-10					  PDF::API2::Basic::PDF::Page(3pm)