Date: Wed, 11 Aug 1999 11:10:21 -0500 (CDT) From: John Sconiers <jrs@enteract.com> To: "Matthew D. Fuller" <fullermd@futuresouth.com> Cc: Matthew Dillon <dillon@apollo.backplane.com>, "Childers, Richard" <RCHILDER@hamquist.com>, "'H. Eckert '" <ripley@nostromo.in-berlin.de>, "'freebsd-security@FreeBSD.ORG '" <freebsd-security@FreeBSD.ORG> Subject: Re: 4 Swap partitions limit (was Re: RE: Little question (offtopic)) Message-ID: <Pine.NEB.3.96.990811110026.21362A-100000@shell-2.enteract.com> In-Reply-To: <19990810175550.A2750@futuresouth.com>
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> > :Continuing to wander off-topic, here ... I've noticed that FreeBSD 3.1 will
> > :not allow more that four swap partitions. Does anyone know why this is?
> > You can compile up a kernel that allows more then four, but even
> > having four will almost certainly going to be overkill.
> How so?
> I have 5 on my personal workstation, and will probably have more whenever
> I add disk. I generally stick a swap partition on every physical disk
> (things like news spool drives are excepted for obvious reasons).
> Vis:
> [17:45:29] mortis:~
> (ttyp8):{6}% pstat -s
> Device 1024-blocks Used Avail Capacity Type
> /dev/da0s1b 655232 0 655232 0% Interleaved
> /dev/da1s1b 524160 0 524160 0% Interleaved
> /dev/da2s1b 130944 0 130944 0% Interleaved
> /dev/da3s1b 262016 0 262016 0% Interleaved
> /dev/da4s1b 524160 0 524160 0% Interleaved
> Total 2096512 0 2096512 0%
> (I just rebooted, normally anywhere from 50-200 megs is used under normal
> conditions).
I don't know your configuration but I had a PII-400 with 4 UW-SCSI drives
and 256 MB ram running -current. I dedicated 3 256MB swap partitions
(over 3 drives). The machine was used a test box. It ran 1 test database
instance and was used to compile source for ports, kernels, make world,
nfs shares, etc. Averaged 3 users with multiple terminal sessions.
Never (almost never) used the swap partitions.
John
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