Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!apple!voder!nsc!amdahl!rtech!ingres!seg
From: seg@ingres.com (scott e garfinkle)
Newsgroups: comp.os.os2.misc
Subject: Re: Virtual Memory Page Size
Message-ID: <1991May22.220044.5862@ingres.Ingres.COM>
Date: 22 May 91 22:00:44 GMT
References: <9645@cognos.UUCP>
Organization: Ask Computer Systems, Ingres Products Division
Lines: 9

In article <9645@cognos.UUCP> bradc@cognos.UUCP () writes:
>Is the virtual memory page size (ie. the unit of swapping) adjustable
>under OS/2 (version 1.3) or is it some fixed size such as 64K?
OS/2 1.x does not use virtual pages (though 2.0 does) -- it swaps segments.
A segment is however large you asked for it to be, from 1 byte to 64kb.
IBM suggests using 32kb or 60kb as good sizes for swapping performance
(64kb requires two physical writes to swap).  It will probably help if
you are swapping many segments of the same size, too.
	-scott garfinkle