Date: Wed, 09 Sep 2009 11:11:42 -0400 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Peter Steele <psteele@maxiscale.com> Cc: freebsd-questions@freebsd.org Subject: Re: Using mdconfig for swap space Message-ID: <441vmgw3td.fsf@be-well.ilk.org> In-Reply-To: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC62@MBX03.exg5.exghost.com> (Peter Steele's message of "Wed, 9 Sep 2009 09:58:09 -0500") References: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EBB7@MBX03.exg5.exghost.com> <20090908235259.GB19173@gizmo.acns.msu.edu> <20090909105707.GA27941@torus.slightlystrange.org> <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC0A@MBX03.exg5.exghost.com> <20090909165005.089ae704@suszko.eu> <7B9397B189EB6E46A5EE7B4C8A4BB7CB3037EC62@MBX03.exg5.exghost.com>
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Peter Steele <psteele@maxiscale.com> writes: >>Nowadays having swap twice as RAM is not necessary. If your system >>wasn't swapping much in the past you can safely stay with 4G in my >>opinion... extending it to 16G would be waste of space :) > > I won't bore you with the details but in fact our application *does* > require this much swap space, but not for the typical reasons. It's a > side effect of how our application works and we thought we could make > use of an image file for the extra swap rather than repartitioning, > but I've read too many warnings against going this route so I've > decided to stick with increasing the size of the swap partition. It's easy to *try* the swap files. Then measure the performance. If the behaviour is really as specific to your custom application as you indicate, then general advice may not apply either. -- Lowell Gilbert, embedded/networking software engineer, Boston area http://be-well.ilk.org/~lowell/
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