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Date:      Wed, 5 Jan 2011 17:33:12 -0600
From:      Gary Gatten <Ggatten@waddell.com>
To:        'Bruce Cran' <bruce@cran.org.uk>
Cc:        'Adam Vande More' <amvandemore@gmail.com>, Jeff Whitman <JWhitman@jwnetsource.com>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   RE: Swap Space
Message-ID:  <27348_1294270392_4D24FFB8_27348_5874_1_D9B37353831173459FDAA836D3B43499A7AF90D6@WADPMBXV0.waddell.com>
In-Reply-To: <20110105232403.000056a2@unknown>
References:  <009b01cbad28$883d31c0$98b79540$@com> <AANLkTi=GUjG510LvuO==3aaPbFYt5FRf_QyVR8J8v2Tz@mail.gmail.com> <19331_1294269649_4D24FCD1_19331_11348_1_D9B37353831173459FDAA836D3B43499A7AF90D4@WADPMBXV0.waddell.com> <20110105232403.000056a2@unknown>

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> Correct me if I'm wrong, but if necessary one could add (and
> activate) a secondary / additional swap file if necessary without
> rebooting.  So maybe start with a few gig and add an additional swap
> file if necessary?

Swapping to a file is really slow and should only be done if absolutely
necessary since every read/write has to go through the filesystem code
which it doesn't do if done via a swap slice.

Good point.  It's been several years and back on v5 or 6 when I did somethi=
ng like this.  If there's unpartitioned space on the drive, can one add a s=
econdary swap partition real-time?  I forget what I did here - I'm sure I f=
ollowed what's in the handbook re swap space.  Probably did a swap file...





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