Date: Mon, 18 Jun 2018 13:27:23 +0100 From: tech-lists <tech-lists@zyxst.net> To: freebsd-stable@freebsd.org Cc: freebsd-questions@freebsd.org Subject: Re: lightly loaded system eats swap space Message-ID: <ab5d0cb0-13f5-5de8-6189-c0a5c621c6e9@zyxst.net> In-Reply-To: <20180618160855.44d9a0c2.freebsd.ed.lists@sumeritec.com> References: <c8277497-ffcf-0503-490b-96d1b4605af7@zyxst.net> <20180618160855.44d9a0c2.freebsd.ed.lists@sumeritec.com>
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On 18/06/2018 09:08, Erich Dollansky wrote: > Hi, > > On Sun, 17 Jun 2018 23:19:02 +0100 > tech-lists <tech-lists@zyxst.net> wrote: > >> freebsd-11-stable r333874, ZFS raidz1-0 (3x4TB disks), 128GB RAM, >> Swap: 4096M Total, 3502M Used, 594M Free, 85% Inuse > > this might not be related but I noticed that your swap space is small > compared to RAM size. I noticed on a much smaller Raspberry Pi, that it > runs into trouble when there is no swap even there is enough RAM > available. Is it easily possible for you to add some GB of swap space > and let the machine run then? > > How much swap do the other machines have? Hi, Yes, the machine with the problem uses the default 4GB swap. That's all the swap it has. The machine without issue has a swapfile installed on a SSD in addition to the default 4GB swap. problematic machine: Device 512-blocks Used Avail Capacity /dev/ada0p3 8388608 3.3G 714M 83% machine without a problem, it has swapfile installed: Device 512-blocks Used Avail Capacity /dev/ada0s1b 8262248 1.7G 2.2G 44% /dev/md0 65536000 1.9G 29G 6% Total 73798248 3.7G 32G 10% I added the swapfile a long time ago on this machine due to the same issue. But my problem isn't so much an out of swapspace problem; all this is, is a symptom. My problem is "why is it swapping out at all on a 128GB system and why is what's swapped out not being swapped back in again". thanks, -- J.
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