Date: Tue, 7 Jan 2014 18:02:16 +0000 From: RW <rwmaillists@googlemail.com> To: freebsd-hackers@freebsd.org Subject: Re: FreeBSD-10 and processes swapping out for no reason Message-ID: <20140107180216.668b133d@gumby.homeunix.com> In-Reply-To: <FDB6C5BD-54EB-4CDC-99BC-F8350196ADE0@gmail.com> References: <FDB6C5BD-54EB-4CDC-99BC-F8350196ADE0@gmail.com>
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On Tue, 7 Jan 2014 20:16:42 +0400 Dmitry Sivachenko wrote: > Hello! > ardware. > > I noticed that some of the processes on 10.0 boxes are marked as > swapped out in top(1) output: Do you have vm.swap_idle_enabled set? > I turned off swap: > # swapinfo > Device 1K-blocks Used Avail Capacity > # > > And state of these processes did not change: still second characted > in state field of ps output is W, and top shows them in angles. I've noticed that with swap_idle_enabled you can have processes shown as swapped, but zero swap in use. If it's a bug it's a long standing one. My guess is that the vm system does something to the pages so that they can be paged-out preferentially.
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