From owner-freebsd-xen@freebsd.org Sun Dec 11 20:23:29 2016 Return-Path: Delivered-To: freebsd-xen@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 50A12C725C7 for ; Sun, 11 Dec 2016 20:23:29 +0000 (UTC) (envelope-from meyer.sydney@googlemail.com) Received: from mail-wm0-x22e.google.com (mail-wm0-x22e.google.com [IPv6:2a00:1450:400c:c09::22e]) (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 DA4D2C64 for ; Sun, 11 Dec 2016 20:23:28 +0000 (UTC) (envelope-from meyer.sydney@googlemail.com) Received: by mail-wm0-x22e.google.com with SMTP id g23so35139391wme.1 for ; Sun, 11 Dec 2016 12:23:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:content-transfer-encoding:mime-version:subject:message-id:date :to; bh=7CSGG/o6deqUEeRipYUJwLtFgWMk1G9Sw4xoY8ThH7Y=; b=XtAPRKFFeavMhBOaKro2uIzIz2uqQYqTBFtqyDzq6nNC1miIOK4I7szF07OObaguLd TLWgQ5ilqNsyNoNJsdZtyRtO0AeKaRnfnZa+jNZvYUckmsWjJy+3It9s+H5kEvZaAFRR 1FTMLMAGH+ND9WIZMoV1UCLnC3TdUHxllHBa5aJgXRc0F49UrBb835zc28ZAmN+Gt92C prcvKGfyJeIDSeDRWX7BQjkt+UidP0Q3qgn3Bym2tNRp77H83U1/imorHw0kE/yeaRaJ qI+ac58i+PwpKure9wKJnrFRzELwAdXd2v+RQCRiuDsI9RVIZW1V/nqGFyC+kDcQKTJz NAKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-transfer-encoding:mime-version :subject:message-id:date:to; bh=7CSGG/o6deqUEeRipYUJwLtFgWMk1G9Sw4xoY8ThH7Y=; b=HgrF2wxSsq5z7kFj7IT0P8FqkNRTQrrX3phOS/qEdbWQ1g2g6lnCV0vt6WzZ642w55 kN409D7QhadBsVvf8xbiLzeQnnTcYzbWuXxONJ4tRqz3fPBgskm3H+JsdHN+Foh9lmsF vAeJedG9SSrLd2EnoLOG0cB70OLc64GA1x7PoyNyKyjp5FIy1nmdmUexhfBtA/rlmwSn N25zpAt8INZu/JF4IlvKGeQ0p8yFOlGQhvsWrBcgVPOftiE4YFjB3x74aa04id2anzVS YTMwxXSI/LxvTYUP8Kqhve54xT0HtvRqvTvyNBIvReHTKfCYS1T83JRKtOFuEm/AuYBD Cl9g== X-Gm-Message-State: AKaTC01o4DMT5DkNa/Kau6XTS05dC+t/qRT8Tvc+xGonO79EzohftGrCHPX46AHZJzABpg== X-Received: by 10.28.152.137 with SMTP id a131mr6101541wme.56.1481487807054; Sun, 11 Dec 2016 12:23:27 -0800 (PST) Received: from ?IPv6:2a02:a03f:ae6:9b00:bd02:e29:7380:4ff8? ([2a02:a03f:ae6:9b00:bd02:e29:7380:4ff8]) by smtp.googlemail.com with ESMTPSA id z6sm53742012wjt.24.2016.12.11.12.23.26 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Dec 2016 12:23:26 -0800 (PST) From: Sydney Meyer Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.1 \(3251\)) Subject: System very slow/freezes with file backed Swap Message-Id: <611F8ABF-8A38-4222-A57E-E11F4FD9F89D@googlemail.com> Date: Sun, 11 Dec 2016 21:23:25 +0100 To: freebsd-xen@FreeBSD.org X-Mailer: Apple Mail (2.3251) X-BeenThere: freebsd-xen@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussion of the freebsd port to xen - implementation and usage List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Dec 2016 20:23:29 -0000 Hello, i'm running a FreeBSD 11.0-RELEASE vm in AWS EC2 with 3-4 jails on it = and after exactly one week, the vm seems to be freezing, i.e. sshd = resets connections, console frozen, ICMP replies for 1-2 days, then = timeouts) no messages in the logs, no messages on the screen. I tried to reproduce this at home on Xen 4.4 with Linux 4.7 with small = 256M memory VMs and found while running "periodic daily & periodic = weekly": - With file-backed Swap: behaviour like above - With block-backed Swap: behaviour like expected (heavy swapping, = eventual success) - Without Swap: behaviour like expected (killed due oom) - With encrypted block-backed Swap: behaviour like above Is this to be expected?=