Date: Sat, 19 Aug 2017 18:03:01 +0100 From: David Chisnall <theraven@FreeBSD.org> To: Cy Schubert <Cy.Schubert@komquats.com> Cc: tech-lists <tech-lists@zyxst.net>, freebsd-current@freebsd.org Subject: Re: swapfile query Message-ID: <BAD32602-C6A9-4A82-B0CB-148D313B90D6@FreeBSD.org> In-Reply-To: <201708191654.v7JGs8sM063853@slippy.cwsent.com> References: <201708191654.v7JGs8sM063853@slippy.cwsent.com>
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On 19 Aug 2017, at 17:54, Cy Schubert <Cy.Schubert@komquats.com> wrote: >=20 >> 3. should total swap be 1x 2x or some other multiple of RAM these = days? >=20 > Depends. If you're running some kind of database server or OLTP=20 > application. Some vendors recommend no swap whatsoever while others=20 > recommend some. What does your application vendor recommend? The main advantage of swap these days (on machines with that sort of = amount of RAM) is to allow you to keep some file-backed memory objects = in memory in preference to leaked (or very cold) heap memory. =20 David
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