From owner-freebsd-questions@FreeBSD.ORG Sun May 19 19:54:17 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 12E5CDA9 for ; Sun, 19 May 2013 19:54:17 +0000 (UTC) (envelope-from jrisom@gmail.com) Received: from mail-ia0-x232.google.com (mail-ia0-x232.google.com [IPv6:2607:f8b0:4001:c02::232]) by mx1.freebsd.org (Postfix) with ESMTP id DAD967B4 for ; Sun, 19 May 2013 19:54:16 +0000 (UTC) Received: by mail-ia0-f178.google.com with SMTP id i9so6620434iad.23 for ; Sun, 19 May 2013 12:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:message-id:date:from:user-agent:mime-version:to:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=hm0jlWfcuobtCVRTNx82QkXdfY0c0ijcp9AMrPK+BlA=; b=o38723obzNO4zdDL5kjPwvd3ycHTUL4LlmyEStnazxy7PqgA2w9AAtMwcNhbmEvoVX IMaPXrB8dGW6/xlRCZ8A3hUlTmT0JjOE0xW/pSMZPaE9wj5ac0oBUcM9sMU0qQEMCvWx 1HbJ/XMmqV0i2byS0PGb3nisduyDue1dlxtrqNqqVObY10cDwP+9xuQZs53f2qHy9QwZ DE082uqHsW+DS9J2md6paOYfkwhALeMpagByY7sOqDk9aokbVrAD9x3MZEhRSaXSSoov rJWrn4H2Gy34NhJ1A5LoWlNOuPImX7P2XFKpZOncQ5iapjvU14ln721r19wAchqLFD3J 3SiA== X-Received: by 10.42.21.135 with SMTP id k7mr5462800icb.15.1368993256628; Sun, 19 May 2013 12:54:16 -0700 (PDT) Received: from [192.168.1.34] (c-98-212-197-211.hsd1.il.comcast.net. [98.212.197.211]) by mx.google.com with ESMTPSA id ua6sm8232962igb.0.2013.05.19.12.54.15 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 19 May 2013 12:54:15 -0700 (PDT) Message-ID: <51992DD0.6010103@gmail.com> Date: Sun, 19 May 2013 14:53:52 -0500 From: Joshua Isom User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Subject: Re: More than 32 CPUs under 8.4-P References: <1368897188.16472.19.camel@btw.pki2.com> <51989FDA.5070302@coosemans.org> <1368978686.16472.25.camel@btw.pki2.com> In-Reply-To: <1368978686.16472.25.camel@btw.pki2.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 May 2013 19:54:17 -0000 On 5/19/2013 10:51 AM, Dennis Glatting wrote: > On Sun, 2013-05-19 at 11:48 +0200, Tijl Coosemans wrote: >> On 2013-05-18 19:13, Dennis Glatting wrote: >>> I have a 4x16=64 core server running FreeBSD 8.4-P but only two of the >>> CPUs (2x16=32) are enabled. Enabling the other 32 isn't as simple as >>> changing MAXCPU in param.h (apparently) and recompiling. >>> >>> What do I need to do to enable the other 32 cores? >> >> Try FreeBSD 9.x. MAXCPU is 64 there. >> > > Not an option. > > ZFS hangs on multi-socket systems (Tyan, Supermicro) under 9.1. ZFS does > not hang under 8.4. This (and one other 4 socket) is a production > system. > > Does this seem to describe the problem? http://www.freebsd.org/cgi/query-pr.cgi?pr=177536 You can try switching to 9-stable. Looking at the source for 8.4, it's not being fixed in the 8 series.