Date: Fri, 14 Aug 2015 17:32:39 +0200 From: "Ronald Klop" <ronald-lists@klop.ws> To: freebsd-stable@freebsd.org Subject: Re: Swap Questions Message-ID: <op.x3c6spl3kndu52@53555a16.cm-6-6b.dynamic.ziggo.nl> In-Reply-To: <55CDFECF.5090504@tundraware.com> References: <55CDE9EE.5090603@tundraware.com> <op.x3c1cvetkndu52@53555a16.cm-6-6b.dynamic.ziggo.nl> <55CDFECF.5090504@tundraware.com>
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On Fri, 14 Aug 2015 16:44:31 +0200, Tim Daneliuk <tundra@tundraware.com> wrote: > On 08/14/2015 08:35 AM, Ronald Klop wrote: >> Does the /dev/md99 device exist now? Otherwise something went wrong >> when you tried adding swap. Try swapon -a without the -q. > > Yes, the device exists and yes, swapon claims is is in use: > > swapon -a > swapon: md99 on /usr/swap0: Device already in use > > But swapinfo doesn't know about it, if it is: > > swapinfo > Device 1K-blocks Used Avail Capacity > /dev/gpt/swapfs 1048576 500300 548276 48% > > > I don't know whether this is just an artifact of how swapinfo reports > things, > but the system acts like it's not seeing the additional swap when it is > under > heavy load. > > The main culprit here, BTW, is clamav which chews through memory like > crazy > as best as I can determine, and this is a VM with only 512M of memory, > hence > the desire to increase swap space. > I tested this on my 11-CURRENT/amd64 laptop and I get this: # grep swap /etc/fstab /dev/gpt/swap0 none swap sw 0 0 md99 none swap sw,file=/tmp/test 0 0 # dd if=/dev/zero of=/tmp/test bs=1M count=10 # swapon -a swapon: adding /dev/md99 as swap device [root@sjakie /tmp]# swapinfo Device 1K-blocks Used Avail Capacity /dev/gpt/swap0 4193280 276744 3916536 7% /dev/md99 10240 0 10240 0% Total 4203520 276744 3926776 7% Works ok for me. Regards, Ronald.
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