Date: Mon, 10 Feb 2020 07:45:55 +0000 From: Steve O'Hara-Smith <steve@sohara.org> To: freebsd-questions@freebsd.org Subject: Re: Bad ZFS performance on the desktop Message-ID: <20200210074555.7f409476708f05bd10c1efb0@sohara.org> In-Reply-To: <17394471581319158@vla1-b55dfea406f0.qloud-c.yandex.net> References: <17394471581319158@vla1-b55dfea406f0.qloud-c.yandex.net>
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On Mon, 10 Feb 2020 07:19:18 +0000 Erik Lauritsen <eriklauritsen@yandex.com> wrote: > I have monitored ZFS using 'top' and can see that it never eats > more than half of my memory, so it's not because I'm out of > memory. Is there any sign of swap activity ? This sounds a lot like swap thrashing. > I'm thinking about getting a couple of SSDs, but then again I use > backup meticulously and perhaps ZFS on a single drive or just UFS > is better for the desktop? I'm using ZFS on a single SSD for boot (with everything important mounted from a NAS running a bunch of mirrors), it's fast but I did have to set vfs.zfs.arc_max in /boot/loader.conf (to 2GB on my 8GB machine) in order to stop browsers thrashing swap. -- Steve O'Hara-Smith <steve@sohara.org>
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