From owner-freebsd-net@FreeBSD.ORG Sun Jan 3 17:00:10 2010 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B50E51065670 for ; Sun, 3 Jan 2010 17:00:10 +0000 (UTC) (envelope-from barney_cordoba@yahoo.com) Received: from web63908.mail.re1.yahoo.com (web63908.mail.re1.yahoo.com [69.147.97.123]) by mx1.freebsd.org (Postfix) with SMTP id 650268FC17 for ; Sun, 3 Jan 2010 17:00:10 +0000 (UTC) Received: (qmail 15821 invoked by uid 60001); 3 Jan 2010 17:00:05 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1262538005; bh=cl5FKqppx5QzdQQYtpeWNenAciWGrHezOd8VzYu6G5k=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=MZuuSZaxFsXXmm7cowqZGnQXCKxdGnmNz766JmdQTjvT824NNjc0E2OKpvoQZ8+yJY2uaKI89tGKaLQ8JvKXbMUCiW8hUw8bmX2Qn2BPEhyOacfzB8CqjIVOmH7edA6Po0hhvh9PMB+nt6higiIVVxkVXCSoxYKuVM3k0J3irTA= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=WynPGP8VAfYWppViUAcQZXEd7v11qEpFDh+bIFtngjTBI3gq0dp1YeywH7kzH+K9cIttb1F40VaZ3fvDN5TQocP61fViG8SnJ9+dQV5bnL/hkyZQK+C/nIazFsC7whpqG5L3FgEHZXSyP1b2kP3ThADJbB44SoTzwBy8VMtfyoc=; Message-ID: <863054.14157.qm@web63908.mail.re1.yahoo.com> X-YMail-OSG: C5F0pKsVM1nQVQdTXjKr7Pz69IPs_aRrDhrK5kabpjQ4vpCVJirMcpX4Q.2Toqr6eJnlxzGGNDRc4VD.CG4HzxD48Y3MK3Xb7uZpshCC3aUbNvKAgnRiIAIc8Bvdm7o5ZGyNqh1_6I9W3rozp0iRtqUYLqbPgt8LvoT6Sqd4exf3Bv_9flknEXaP9utlkUKOPu75EfHe692c.VuwYeEyz7bqCT0Gxe3yZ27gFvQAVpSbsILjVfU_j4LeXmC0.RTrtHLrKX3S0KLMZGwDVfUNFT5ukYiqP84- Received: from [98.203.21.152] by web63908.mail.re1.yahoo.com via HTTP; Sun, 03 Jan 2010 09:00:05 PST X-Mailer: YahooMailClassic/9.0.20 YahooMailWebService/0.8.100.260964 Date: Sun, 3 Jan 2010 09:00:05 -0800 (PST) From: Barney Cordoba To: Mike Tancsa , =?iso-8859-1?Q?Michael_T=FCxen?= In-Reply-To: <1ABE4BCD-135C-44E0-80D8-52DFAE17B3D3@lurchi.franken.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-net@freebsd.org Subject: Re: igb interrupt moderation X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 03 Jan 2010 17:00:10 -0000 =0A=0A--- On Sun, 1/3/10, Michael T=FCxen wrote:=0A=0A> From: Michael T=FCxen =0A= > Subject: Re: igb interrupt moderation=0A> To: "Mike Tancsa" =0A> Cc: "Barney Cordoba" , jfvogel@gmail.com= , freebsd-net@freebsd.org=0A> Date: Sunday, January 3, 2010, 11:38 AM=0A> O= n Jan 3, 2010, at 5:23 PM, Mike=0A> Tancsa wrote:=0A> =0A> > At 11:13 AM 1/= 3/2010, Michael T=FCxen wrote:=0A> >> >=0A> >> > Just a separate datapoint = about this driver,=0A> unless I apply=0A> >> >=0A> >> > http://people.freeb= sd.org/~yongari/igb/igb.buf.patch6=0A> >> >=0A> >> > the driver is not real= ly usable for me in=0A> RELENG_8 on the dual port version of the card=0A> >= > Could you elaborate on what you mean by "not=0A> really usable"?=0A> > = =0A> > =0A> > Hi,=0A> >=A0 =A0 =A0 =A0 Some link state issues=0A> (getting = confused about what port is up), problems at high=0A> packet rates.=A0 I do= nt have this card in production, but=0A> in my test environment it was much= more stable on RELENG_8=0A> with the above patch in that I was not able to= wedge the=0A> box.=A0 pps rates were pretty ok on a low end i7 as=0A> well= .=0A> Thanks for the information. I'll give it a try. I have a=0A> problem = when I flood=0A> a system with SCTP INITs. The system under attack becomes= =0A> completely unresponsive=0A> on the console. However, it continues to s= end INIT-ACKs=0A> back. After the last=0A> commit from Jack it recovers aft= er the attack. Not yet sure=0A> what is going on.=0A> Using the em driver d= oes not have the problem. However,=0A> when using the em=0A> driver only on= e core is fully used, when using the igb=0A> driver both cores are fully=0A= > used. Unfortunately I do not have a more than dual core=0A> machine avail= able for=0A> this testing...=0A=0ATry em and lower the interrupt moderation= to something like 500 (about=0A100 packets per int is good). The latency i= sn't going to be noticable and=0Ayou'll see your cpu burden reduced quite a= bit. =0A=0AAre you using a single NIC on a server, or do you have a firewa= ll or=0Abridge?=0A=0ABarney=0A=0A=0A=0A=0A