From owner-freebsd-current@freebsd.org Tue Jun 26 21:39:44 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 61733101C2A1 for ; Tue, 26 Jun 2018 21:39:44 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id EA9BD85727 for ; Tue, 26 Jun 2018 21:39:43 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mailman.ysv.freebsd.org (Postfix) id A977E101C2A0; Tue, 26 Jun 2018 21:39:43 +0000 (UTC) Delivered-To: current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 87152101C29F for ; Tue, 26 Jun 2018 21:39:43 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wr0-x241.google.com (mail-wr0-x241.google.com [IPv6:2a00:1450:400c:c0c::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0B1B08571E for ; Tue, 26 Jun 2018 21:39:43 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mail-wr0-x241.google.com with SMTP id p12-v6so17013368wrn.11 for ; Tue, 26 Jun 2018 14:39:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=iVk8le+dmd9kbQdhNOjCNs5YAGpnXjZSI4PhFcvnxSw=; b=kJPMbnn2mJXYlncf4Cua+NoMiVxi1KR4W0f1Os2R1LSXRZJX48J3OxvjpBiS5Y0+nV CU5BQhYfbF8E7Kmz1YZXsB6QuF/i6bbVzWZE9YEJ+XXsI9UgJ1bQBhDEC6s3ICZ347xT BEbzuWfwU4qeOYP9zMUZ2GVYeJ9VcbzbabGPBRNYuiavF1slGmze43WDQnXUWqfU1B4n Kcra2YE/mEE49LWzt6FLVdFB5uedGRRG04tGsGF9qL3rDb7GbRH4cf4w5oY3vLPSZCAy 0TAqIEPBP2IO03iA7WkIatNhxkLc3M528thBRTm+rI6V1O7Ma/mSoB58MiJNRFbCVC1j KbKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=iVk8le+dmd9kbQdhNOjCNs5YAGpnXjZSI4PhFcvnxSw=; b=Y5i5e+OdZ869m2ueUpfPMrhslvAEtiTBC4j+Ytok7R+KkLqa3qc/U88Wc4dq8oHgqh Ej64c8kHzl+jBV/X0S6B65rYeer2vmfv9jEFyTQBVWc36Jfw0xRYuJwEBD7ahWgI+84O n7sstPM/FYA22Nq6/fG+KDjA+J6DrIXQqdqRUlyEnz1qfzBRg1yK3b2rKVKPr5B2BTiV gLDZ/kLjj+0kmHN0dOJKdXuG610tVdirWCSYzPO6B9lAA14/emFD/024kNpTtwipYBn+ eOndTTd2t2DiYevK0fipoJZ7LFsiQq7tuiShTTlj6KgkCud9tCcAH7ZaWPfXEYlH2tq2 gZQw== X-Gm-Message-State: APt69E1RVPQZERWFut4cgibKYsTLj4+2J3EbQW4lLwjX64ww+SILP41q dV7jMI9S7p5lFoviCQJ8wYhv/jRVc4oGrHKR7gvn/A== X-Google-Smtp-Source: AAOMgpdasW7sdrdOGvOTL9gvc1DZJmHieiVId3S+UsHsrkeNMBLrALCMEhYu3iHviiZhRZuOYeptX0AD+c1PwJ330t0= X-Received: by 2002:adf:acc3:: with SMTP id o61-v6mr2979555wrc.34.1530049181915; Tue, 26 Jun 2018 14:39:41 -0700 (PDT) MIME-Version: 1.0 References: <20180624120329.Horde.HWORumQ7Ng1KAUeviJNtoc3@webmail.leidinger.net> <20180625182250.GA40651@troutmask.apl.washington.edu> In-Reply-To: <20180625182250.GA40651@troutmask.apl.washington.edu> From: Adrian Chadd Date: Tue, 26 Jun 2018 14:39:27 -0700 Message-ID: Subject: Re: numa involved in instability and swap usage despite RAM free? To: Steve Kargl Cc: Alexander Leidinger , "current@freebsd.org" Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jun 2018 21:39:44 -0000 Hi, Aren't there now per-domain VM counters you can query via sysctl? Maybe they'd help in diagnosing what's going on. -adrian On Mon, 25 Jun 2018 at 11:23, Steve Kargl wrote: > > On Sun, Jun 24, 2018 at 12:03:29PM +0200, Alexander Leidinger wrote: > > > > I don't have hard evidence, but there is enough "smell" to open up a > > discussion... > > > > Short: > > Can it be that enabling numa in the kernel is the reason why some > > people see instability with zfs and usage of swap while a lot of free > > RAM is available? > > Interesting observation. I do have NUMA in my kernel, and swap > seems to be used instead of recycling freeing inactive memory. > Top shows > > Mem: 506M Active, 27G Inact, 98M Laundry, 2735M Wired, 1474M Buf, 1536M Free > Swap: 16G Total, 120M Used, 16G Free > > Perhaps, I don't understand what is meant by inactive memory. I > thought that this means memory is still available in the buffer > cache, but nothing is current using what is there. > > -- > Steve > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"