From owner-freebsd-hackers@freebsd.org Mon Sep 11 04:37:16 2017 Return-Path: Delivered-To: freebsd-hackers@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 D0A5BE19AA5 for ; Mon, 11 Sep 2017 04:37:16 +0000 (UTC) (envelope-from auryn@zirakzigil.org) Received: from mx1.etoilesoft.fr (mx1.etoilesoft.fr [52.57.51.18]) by mx1.freebsd.org (Postfix) with ESMTP id 98CFF6F583 for ; Mon, 11 Sep 2017 04:37:16 +0000 (UTC) (envelope-from auryn@zirakzigil.org) Received: from mx1.etoilesoft.fr (localhost [127.0.0.1]) by mx1.etoilesoft.fr (Postfix) with ESMTP id C96799C945 for ; Mon, 11 Sep 2017 04:38:08 +0000 (UTC) Received: from [172.25.93.65] (localhost [127.0.0.1]) (Authenticated sender: auryn@zirakzigil.org) by mx1.etoilesoft.fr (Postfix) with ESMTPA id 6FC629C944 for ; Mon, 11 Sep 2017 04:38:08 +0000 (UTC) Subject: Re: OOM-killer can't work on FreeBSD 11.0 To: freebsd-hackers@freebsd.org References: From: Giulio Ferro Message-ID: Date: Mon, 11 Sep 2017 06:37:08 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: fr X-Virus-Scanned: ClamAV using ClamSMTP X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Sep 2017 04:37:16 -0000 On 11/09/2017 05:56, Zhixin Wan via freebsd-hackers wrote: > Hi, > > I have a mail system running FreeBSD 9.3 which is put on VMWare ESXi, it's assigned a low memory (1G or 2G) and a reasonable swap disk size (2 x Memory size). > The mail system was running for several years, and didn't see any freeze even a lot of mail traffic through it. > > Recently I upgraded this mail system from FreeBSD 9.3 to FreeBSD 11.0, and after running a few days, the mail system got freeze. I can't get any response from the console, > and can't login to the mail system with SSH either, except ping to the system got response. I look into the message log and found a lot of messages: I don't know if it's relevant with your problem, but I experienced exactly the same problem on a Freebsd 11 EC2 instance on AWS. If I set up a swap, the system would freeze after some time (from a few hours to a few days). I solved by augmenting the RAM allocated and removing the swap... Cheers Giulio