Date: Wed, 30 Apr 2003 16:32:09 -0700 (PDT) From: Jason Stone <freebsd-performance@dfmm.org> To: <freebsd-performance@freebsd.org> Subject: Re: SWAP size Message-ID: <20030430162823.I4074-100000@walter> In-Reply-To: <3EB05582.297F50AE@lbl.gov>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > If you have a lot of memory and you are able to control all processes > not to overrun the system memory, 0.5 - 1x swap is OK; you need some > swap space to back up yourself in case something happens. That is why > 2x is recommended; but not required if this is not a server. > > For server, 2x may be required, and typically 2.5x is needed. Also remember that crash-dumps get written to swap, so if you want to be able to take a dump in the event of a panic, you need at least as much swap as physical ram. Since crash-dumps are usually a good idea (or at least the ability to take a dump if your system starts acting strangely), I think you should never have less than 1x ram on a production system. -Jason -------------------------------------------------------------------------- Freud himself was a bit of a cold fish, and one cannot avoid the suspicion that he was insufficiently fondled when he was an infant. -- Ashley Montagu -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) Comment: See https://private.idealab.com/public/jason/jason.gpg iD8DBQE+sFz6swXMWWtptckRAsFIAJ47vP344lTYuN4fP5w0/kosWbEz1wCdG1i6 NprsPd0En9cOzYjOL3scKXE= =Zxe3 -----END PGP SIGNATURE-----
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