From owner-freebsd-questions@freebsd.org Wed Mar 9 12:24:39 2016 Return-Path: Delivered-To: freebsd-questions@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 683E8AC7841 for ; Wed, 9 Mar 2016 12:24:39 +0000 (UTC) (envelope-from shahzaib.cb@gmail.com) Received: from mail-ig0-x235.google.com (mail-ig0-x235.google.com [IPv6:2607:f8b0:4001:c05::235]) (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 2ED708C0 for ; Wed, 9 Mar 2016 12:24:39 +0000 (UTC) (envelope-from shahzaib.cb@gmail.com) Received: by mail-ig0-x235.google.com with SMTP id av4so14182866igc.1 for ; Wed, 09 Mar 2016 04:24:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to; bh=uG6jk+yXIsn7UPvQb+/jSNztOG7SuAkRRsHxGIED8aM=; b=SQGPepWdheazFFO/P9CON4prlIzWr5KlUWhB3MjVXchd46QPSIVE1k5rjfBsxPqYYH Ex4xppnIyysJ/NixSHmPRQHU3ReQrdq1ETG42M8FraSNryO6tKYwqmcWBONMC5xn+E4u BYGcbXga50frlWndX4snOOW7EQwliRAdOhC0cXHy9ZvBql3yLuT5Ys6T1c7vvK8BO2I/ oA75N6XVuGPZnk79QlTGVWJuj39vQzmP0yZMofCefQ9anG3DXGqRNzJgz6q8S4eNsDY/ zhpLNHInwU0SEKx97kDFKRlLMAjPTLFPxCKuizOHsXxUGbFC1hZoGj4ufgdIfSS159e8 5Enw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=uG6jk+yXIsn7UPvQb+/jSNztOG7SuAkRRsHxGIED8aM=; b=QEHrD0TINlxxgKNVXsLJzsVlk3lLvphQlAROXrPV/LVpxKMHmUuCpR1CsryQzITrn3 CeM63d+3ZOqMYcEmSs1zw7b7Al8rDjnhhpztq+9JDfAfBrC3xr7uNi06PjBlPX1F39F1 M/ajxkr8WtQcOwACUddIxu/o2XcLHJ9+jjAzp+Eklr2Soj7R3U3ChcY8xLPovk85MXcu mDdesiH0IVaIwpU+PylidSOhFg+1hCwzDVOD5tR3mXrAhuq2DMUyYwe4D+iAGsXOtweJ 72KzlIcIFnmgi7J4r3Y6FsLb8Xj6QYacVKpBV7OxzuVse8y/D8o89PAbyCnYBmHMnsz+ ia4w== X-Gm-Message-State: AD7BkJKiQwyDm/T/1goQ5t+pm19+vBl3DHc338w1bCXF1kHd7f+4+CuBHOFBvkGf1O23/jSPbqeeNcMGnAUlvw== MIME-Version: 1.0 X-Received: by 10.50.132.42 with SMTP id or10mr24685685igb.85.1457526277961; Wed, 09 Mar 2016 04:24:37 -0800 (PST) Received: by 10.79.128.145 with HTTP; Wed, 9 Mar 2016 04:24:37 -0800 (PST) Date: Wed, 9 Mar 2016 17:24:37 +0500 Message-ID: Subject: FreeBSD Crashes Intermittently !! From: shahzaib shahzaib To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Mar 2016 12:24:39 -0000 Hi, I am new to this mailing list so please pardon me for any mistakes. We've started using FreeBSD from past 4-5 months and facing auto-reboot crash issue since the beginning. Following are the servers specs : Supermicro X5690 (12 cores, 24 threads - 2u) 96GB RAM 12x3TB mirror+stripping (HBA-LSI9211) X8DT3 Board We've total of 5 supermicro servers built upon same hardware and all of them intermittently goes down and sometimes they crash and boot up automatically (within 6min) and sometimes they gets freeze and we've to manually boot them via IPMI interface. All the time we get 'MCA Internal Timer Error' in crash logs. Here is the recent one : http://pastebin.com/042SJ11c Once we reported this issue to our hardware vendor he said that its due to FreeBSD incompatibility with hardware and suggested us to try installing Linux on one of them and so did we proceeded with Debian on one of them them but all in vain and server was still crashing. Once we reported him about his failed proposal he then said that it could be related to application which is causing this crash. Now if he really is right then RAM should first swapped out to its full in order to make OS crash but never did that happened, we've never been out of Memory as 96GB RAM is pretty high. We've also took some precaution to debug this issue : - Replacing Power-Supply. - Reducing CMOS in BIOS. - Disabling Intel Powersaving features. - Upgrade Bios Now we do not know how and what to debug. If you need more details, please visit following thread which we created 2 months back : https://forums.freebsd.org/threads/54412/ Now i am confused if application really can crash server without swapping it out ? Could there be any php function which could make a crash :-| . Is FreeBSD is the cause of crash ? Things are pretty blurred right now :(. Here is the Kernel tuning values : http://pastebin.com/nEnxkV6y Please help us further !! Regards. Shahzaib