Mailinglist Archive: opensuse (2700 mails)

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Re: [SLE] swap space question in 9.3 install
  • From: Ken Schneider <suse-list@xxxxxxxxxxxxx>
  • Date: Thu, 28 Jul 2005 08:28:05 -0400
  • Message-id: <1122553685.15457.6.camel@xxxxxxxxxxxxxxxxx>
On Thu, 2005-07-28 at 03:47 +0200, Carlos E. R. wrote:
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>
> The Monday 2005-07-25 at 15:01 -0400, Jerry Feldman wrote:
>
> > Actually, in Windows95 and forward swap was somewhat automatic. In Windows,
> > SWAP was (and is) a file in the file system.
>
> That's the same as it was in Win 3.1. It was a file, it could be fixed or
> automatic. Same thing :-)
>
> > I'm pretty sure the 2x (or 3x)
> > rule of thumb is of Unix origin since we've been allocating swaps on Unix
> > for quite a while before Windows knew what virtual memory was.
>
> Yes, of course, I only said that the 2X rule was a windows thing, not that
> wirtual memory was a windows thing. It was not possible to allocate more:
> if you did, it warned you that it would not use it.

I was first exposed to unix (SUN OS) in 1987 and (as far as I can
remember) I was told that swap was generally 2X the amount of memory.
SUN OS was clearly around before windows was. Windows 1.0 was released
in 1985.

>
> > At one time,
> > the Linux swap was limited to something like 768M, and you could not
> > allocate more, but that was fixed long before the 2.2 kernel.
>
> Right. And no so long ago, there was a limit per swap partition or file, I
> think it was 128 Mb. But you could allocate dozens of those spaces.
>
>

--
Ken Schneider
UNIX since 1989, linux since 1994, SuSE since 1998

"The day Microsoft makes something that doesn't suck is probably
the day they start making vacuum cleaners." -Ernst Jan Plugge


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