From owner-freebsd-fs@freebsd.org Tue Sep 25 16:39:35 2018 Return-Path: Delivered-To: freebsd-fs@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 556CB10B5F63 for ; Tue, 25 Sep 2018 16:39:35 +0000 (UTC) (envelope-from olav@backupbay.com) Received: from mail-yw1-xc29.google.com (mail-yw1-xc29.google.com [IPv6:2607:f8b0:4864:20::c29]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id EE64578916 for ; Tue, 25 Sep 2018 16:39:34 +0000 (UTC) (envelope-from olav@backupbay.com) Received: by mail-yw1-xc29.google.com with SMTP id h134-v6so6401512ywc.9 for ; Tue, 25 Sep 2018 09:39:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=backupbay-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :content-transfer-encoding; bh=arfDyUjVMcQ9NvWlDjKQuQWws+6+t6tBUex4YPUrDwM=; b=YzXtV8EFzOYvCx/prRXRCj4mByuRUkpEazUm6WNxlik+lASWRE3Kr4xa15MP6+y7Pv ZyVrr6BHd3Vkzx/Q5dPvY2zpmBz3zVxdz9QdTDM9jmWkjc6sIIo9L2LxIVHBaldKvaWu Mf5C7FQpH4HWBScIs18es6kcALpzaD0xGA/543OFiL81G7hJWprGhMb5/6fKm3rYOcGt Sv3AYo8HKiTf63xC/dKAO+wBusO6a3IW73y8mPlLUetfFHWoVgyYpvvMA/G7Or8pD+J5 SNjT3i+D2GtJOYDrdwTSGywwZwP8IzRzukyav0yDvWyU0vuL2+nVSI8u40dwzgqJ/zbF rlIQ== 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:content-transfer-encoding; bh=arfDyUjVMcQ9NvWlDjKQuQWws+6+t6tBUex4YPUrDwM=; b=dWUS6P8PcyIKG735MlrHAGUMdtZi+ZiLMhoj6b4QF+1QwnEXRvlcxto644HWzWpOta LHA5uGDe0GYTzIkQWUz1h8jLuUixaV5Pg1L9SCloaFDxGUlL92kj/fzFk2f86Nf4dokq W0GEeP/pcK++s08l2CS4QMdM7YteLjFkiTn9pYH4oT+NQqEzzKMWv69HQUpLf88M+aYv bNMk1+BjlEGvXZ1m/ncJSUY9aINu/DUGA63kf/3axwIDvFMIOCAO3SKwKCW6v11xHn1M 7fiOsHHEua1bEoalEjZt1ZS8ePyfdBkmujrvLp11KWMklAvRzUgBIPuQosnVGqCH4OVk diZw== X-Gm-Message-State: ABuFfojGgRgqLpj9nDs41uasNwojme+M6KCiimLdaVGVN/3YBrkY7aNv Si3UW/RRhvuKaK8t7+qgOmsTW1ZA2kETgnY0eEien/rWqBVUfA== X-Google-Smtp-Source: ACcGV625zfrDPAAjC0/bVms4oHgihOZUtk57g4y7UQbi4DPWeJ3mM/89C8rEVtYRhpb6dwxqqEEFySk6EbrZObPs3/I= X-Received: by 2002:a81:ae04:: with SMTP id m4-v6mr1018298ywh.474.1537893573779; Tue, 25 Sep 2018 09:39:33 -0700 (PDT) MIME-Version: 1.0 References: <41d177bf-117b-10c3-06a0-7d74d298fede@ShaneWare.Biz> In-Reply-To: <41d177bf-117b-10c3-06a0-7d74d298fede@ShaneWare.Biz> From: Olav Gjerde Date: Tue, 25 Sep 2018 18:39:22 +0200 Message-ID: Subject: Re: Troubleshooting kernel panic with zfs To: FreeBSD Filesystems Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Sep 2018 16:39:35 -0000 On Sat, Sep 22, 2018 at 4:54 AM Shane Ambler wrote: > > On 21/9/18 10:34 pm, Mike Tancsa wrote: > > > > Given all the issues with memory pressure perhaps ARC is eating too > > much, I would try artificially limiting it so it does not eat up too > > much RAM. We had a similar purposed server but with 32G RAM and I foun= d > > one day the system was randomly shooting processes to reclaim RAM > > > > eg > > pid xxx (yyy), uid zzzz, was killed: out of swap space > > > > I have seen these errors, for me they came when >90% ram is wired. > > This is something I reported in bug 229764. While ARC is wired, there is > also a max_wired that limits other wired allocations, these two are > independent and can total more than physical ram. > > max_wired defaults to 30% ram, so arc_max should be kept less than 70% > > I also had positive results applying review D7538 > > -- > FreeBSD - the place to B...Storing Data > > Shane Ambler > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" How large is your swap? You can check it with the swapinfo command https://www.freebsd.org/cgi/man.cgi?query=3Dswapinfo&sektion=3D8 -- Kind Regards / Med Vennlig Hilsen Olav Gr=C3=B8n=C3=A5s Gjerde BackupBay Gjerde Asalvegen 19 4051 SOLA Norway Phone: +47 918 000 59