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Date:      Tue, 08 Apr 2014 11:51:21 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Steven Hartland <killing@multiplay.co.uk>, stable-list freebsd <freebsd-stable@FreeBSD.org>
Subject:   Re: What's up with the swapping since 10/stable
Message-ID:  <5343B889.4060000@FreeBSD.org>
In-Reply-To: <FC46F9EF2A4B4A5CA912CF1FA0A57C9C@multiplay.co.uk>
References:  <CA%2BD9QhvDsTwosUxUeL2U05dMt%2BKe6kY5BYCNjJo8e8TsfZTsXg@mail.gmail.com> <A4BE503B-ADA9-4F61-893E-79A5F30728A2@bridgenet.se> <FC46F9EF2A4B4A5CA912CF1FA0A57C9C@multiplay.co.uk>

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on 04/04/2014 11:09 Steven Hartland said the following:
> We've noticed that swapping is much more agressive in 10.0 than
> in 8.3 and have indeed seen it swap processes out when there is
> 10GB+ free memory.

I believe that r254304 made the page daemon more eager to page out and, as a
consequence, to potentially swap out.  Also, it skewed the fragile and imperfect
cooperation between the page daemon and ARC sizing.

-- 
Andriy Gapon



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