Date: Tue, 07 Feb 2012 17:51:46 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: "Eugene M. Zheganin" <emz@norma.perm.ru> Cc: freebsd-stable@FreeBSD.org Subject: Re: zfs arc and amount of wired memory Message-ID: <4F314892.50806@FreeBSD.org> In-Reply-To: <4F3144A9.2000505@norma.perm.ru> References: <4F30E284.8080905@norma.perm.ru> <4F310115.3070507@FreeBSD.org> <4F310C5A.6070400@norma.perm.ru> <4F310E75.7090301@FreeBSD.org> <4F3144A9.2000505@norma.perm.ru>
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on 07/02/2012 17:35 Eugene M. Zheganin said the following: > Okay, thank you once again, it made me more clear what is happening to the memory: > > > System Memory: > > 4.39% 172.47 MiB Active, 0.29% 11.53 MiB Inact > 90.68% 3.48 GiB Wired, 3.54% 138.98 MiB Cache > 0.10% 4.12 MiB Free, 0.99% 39.07 MiB Gap > > Real Installed: 4.00 GiB > Real Available: 99.61% 3.98 GiB > Real Managed: 96.31% 3.84 GiB > > Logical Total: 4.00 GiB > Logical Used: 96.22% 3.85 GiB > Logical Free: 3.78% 154.63 MiB > > Kernel Memory: 393.82 MiB > Data: 96.14% 378.63 MiB > Text: 3.86% 15.20 MiB > > Kernel Memory Map: 2.68 GiB > Size: 9.82% 269.77 MiB > Free: 90.18% 2.42 GiB > > Looks like most of the 'wired' space is makred in kernel as free, though still > 'wired', and thus for me it doesn't look that free as 'free' or 'inactive', and, > as the paged out amount continues to grow, I want to ask if there's a way to make > this address space availabe to a userland processes ? I am not sure that these conclusions are correct. Wired is wired, it's not free. BTW, are you reluctant to share the full zfs-stats -a output? You don't have to place it inline, you can upload it somewhere and provide a link. -- Andriy Gapon
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