From owner-freebsd-current@FreeBSD.ORG  Tue Oct 29 15:25:53 2013
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id 4FC0CC3E;
 Tue, 29 Oct 2013 15:25:53 +0000 (UTC)
 (envelope-from VenkatKumar.Duvvuru@Emulex.Com)
Received: from CMEXEDGE1.ext.emulex.com (cmexedge1.ext.emulex.com
 [138.239.224.99]) (using TLSv1 with cipher AES128-SHA (128/128 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 2D2F02E67;
 Tue, 29 Oct 2013 15:25:52 +0000 (UTC)
Received: from CMEXHTCAS1.ad.emulex.com (138.239.115.217) by
 CMEXEDGE1.ext.emulex.com (138.239.224.99) with Microsoft SMTP Server (TLS) id
 14.3.146.0; Tue, 29 Oct 2013 08:11:01 -0700
Received: from CMEXMB1.ad.emulex.com ([169.254.1.123]) by
 CMEXHTCAS1.ad.emulex.com ([2002:8aef:71b7::8aef:71b7]) with mapi id
 14.03.0146.002; Tue, 29 Oct 2013 08:10:44 -0700
From: Venkata Duvvuru <VenkatKumar.Duvvuru@Emulex.Com>
To: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>,
 "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Subject: taskqueue_enqueue_fast in freebsd 10.0-current
Thread-Topic: taskqueue_enqueue_fast in freebsd 10.0-current
Thread-Index: Ac7UuEkxdur08036S5KLJpYxkoqGeQ==
Date: Tue, 29 Oct 2013 15:10:44 +0000
Message-ID: <BF3270C86E8B1349A26C34E4EC1C44CB2C728A31@CMEXMB1.ad.emulex.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
x-originating-ip: [138.239.141.147]
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
X-Content-Filtered-By: Mailman/MimeDel 2.1.14
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 29 Oct 2013 15:25:53 -0000

Hi,
In Freebsd 10.0-current with Emulex's OCE driver, I observe that the bottom=
 half is hogging all the CPU which is leading to system sluggishness. I use=
d the same hardware to check the behavior on 9.1-RELEASE, everything is fin=
e, bottom half is not taking more than 10% of the CPU even at the line rate=
 speed. But with half the throughput of line rate in Freebsd-10.0-current a=
ll the CPUs peak and "top -aSCHIP" shows that it's all bottom half who is e=
ating the CPU. Did anything changed in Freebsd-10.0-current that I should b=
e careful about? Please clarify.

Thanks,
Venkat.