From owner-freebsd-questions@FreeBSD.ORG Sun Nov 16 17:29:31 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 87F16421 for ; Sun, 16 Nov 2014 17:29:31 +0000 (UTC) Received: from mail-wg0-x230.google.com (mail-wg0-x230.google.com [IPv6:2a00:1450:400c:c00::230]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 1A5A1FDF for ; Sun, 16 Nov 2014 17:29:31 +0000 (UTC) Received: by mail-wg0-f48.google.com with SMTP id y19so898338wgg.7 for ; Sun, 16 Nov 2014 09:29:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=n622+ml4vdr6hvP4qQ8x/XM7HoxVhMu9IuQxlmyyDXY=; b=HyzOTqXFTisD2N1bXuvTRJ11pqg0LJ+z9+3oS8R49YKaMR/FGtyCY3rDZ1dTUOuM9s zSF0CZvVUNr3zYHtzVELKSQZ+E/TdawMFwPXTfB/PLHYq7K1EmIYFoDvQ5FkTKvxe1s1 k15NfII3dmnRn72+YKcc2g0HdCV5+O0KdXQ4MHfz9yXBv8928Vj40GUxmoHU5Aul54sJ S+GUG4xy/I1vNzNML2hM72UkS0TY/seOPRsRiuDELyaIdCv2yKsO59fuLSaHxMJOAEdG lUj5zL4UMZ17aZtcAT1rwymqLDXlIswmBuJSpfkzXhLAPLJ/HK4eC77mwBVc7rBK/vGS WnfA== MIME-Version: 1.0 X-Received: by 10.194.80.100 with SMTP id q4mr31859382wjx.15.1416158969579; Sun, 16 Nov 2014 09:29:29 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.216.106.136 with HTTP; Sun, 16 Nov 2014 09:29:29 -0800 (PST) In-Reply-To: <546770A1.1070606@qeng-ho.org> References: <546770A1.1070606@qeng-ho.org> Date: Sun, 16 Nov 2014 09:29:29 -0800 X-Google-Sender-Auth: 4DZxyHQdGmahXZxTydL-dd7KRJU Message-ID: Subject: Re: igb interfaces and kern.ipc.nmbclusters From: Adrian Chadd To: Arthur Chance Content-Type: text/plain; charset=UTF-8 Cc: FreeBSD-Questions X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Nov 2014 17:29:31 -0000 That default is high and should be fine for almost all uses at 1g. -adrian On 15 November 2014 07:26, Arthur Chance wrote: > man igb contains the section > > kern.ipc.nmbclusters > The maximum number of mbuf clusters allowed. If the system has > more than one igb card or jumbo frames are enabled, this value > will need to be increased. > > Given that I'm in the process of setting up a new server with two igb > interfaces, is there a suggestion for what I should set it to? > > My current value is > > root@arthur:4# sysctl kern.ipc.nmbclusters > kern.ipc.nmbclusters: 2020126 > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"