Memory, swap, and limits [now becoming OT]
fred smith
fredex at fcshome.stoneham.ma.us
Thu Jun 19 15:50:30 UTC 2008
On Thu, Jun 19, 2008 at 08:57:18AM -0400, James Kosin wrote:
> Bruno Wolff III wrote:
> >On Wed, Jun 18, 2008 at 09:56:25 -0400,
> > James Kosin <jkosin at beta.intcomgrp.com> wrote:
> >
> >>>
> >>>
> >>Having TOO much swap space can be a detriment and not an asset.
> >>Usually, the rule of thumb I go by is allocate about 2x the amount of
> >>physical memory installed on the system; for machines with < 1M. This
> >>number will need to approach more or less 1x for machines with 1-2M.
> >>With machines with > 2M; I'm not sure swap space will make much of a
> >>difference, unless you rely on X heavily.
> >>
> >
> >Presumably you mean Gigabytes above as there haven't been desktop machines
> >with memory on the order of 1 megabyte in about 15 years.
> >
> >There are other factors in this. If you turn off overcommit you need to
> >have swap space available to back memory that may be allocated but not
> >really being used. So rules of thumb using ratios may not always be
> >applicable.
> >
> >
> Sorry, I'm a bit dated and now I've probably revealed my age.
> I've been around since the first personal computers and remember when
> 64K was considered a LOT of memory.
I remember when the company where I worked (my first programming job), which
sold a product based on a Dec lsi-11 board, decided that all new systems
would go out the door with 64KB--I thought we'd died and gone to heaven, all our
problems are over now! Of course it was only a few months before 64KB wasn't
big enough either. :(
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--
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
"Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of
heaven, but only he who does the will of my Father who is in heaven."
------------------------------ Matthew 7:21 (niv) -----------------------------
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