From owner-freebsd-hackers@FreeBSD.ORG  Thu Feb 24 02:22:28 2011
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id A6F1C1065679
	for <freebsd-hackers@freebsd.org>; Thu, 24 Feb 2011 02:22:28 +0000 (UTC)
	(envelope-from doconnor@gsoft.com.au)
Received: from cain.gsoft.com.au (cain.gsoft.com.au [203.31.81.10])
	by mx1.freebsd.org (Postfix) with ESMTP id CE1FE8FC15
	for <freebsd-hackers@freebsd.org>; Thu, 24 Feb 2011 02:22:27 +0000 (UTC)
Received: from ur.gsoft.com.au (Ur.gsoft.com.au [203.31.81.44])
	(authenticated bits=0)
	by cain.gsoft.com.au (8.14.4/8.14.3) with ESMTP id p1O2MNmX005275
	(version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO);
	Thu, 24 Feb 2011 12:52:24 +1030 (CST)
	(envelope-from doconnor@gsoft.com.au)
Mime-Version: 1.0 (Apple Message framework v1082)
Content-Type: text/plain; charset=us-ascii
From: "Daniel O'Connor" <doconnor@gsoft.com.au>
In-Reply-To: <53A394ED-7C2E-4E4B-A9A7-CB5F1B27DBE3@gsoft.com.au>
Date: Thu, 24 Feb 2011 12:52:23 +1030
Content-Transfer-Encoding: quoted-printable
Message-Id: <49CFB6EF-404A-44C3-A061-F9A7AE604B56@gsoft.com.au>
References: <53A394ED-7C2E-4E4B-A9A7-CB5F1B27DBE3@gsoft.com.au>
To: "Daniel O'Connor" <doconnor@gsoft.com.au>
X-Mailer: Apple Mail (2.1082)
X-Spam-Score: -2.51 () ALL_TRUSTED,BAYES_00,T_RP_MATCHES_RCVD
X-Scanned-By: MIMEDefang 2.67 on 203.31.81.10
Cc: freebsd-hackers Hackers <freebsd-hackers@freebsd.org>
Subject: Re: Scheduler question
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 24 Feb 2011 02:22:28 -0000


On 04/02/2011, at 13:26, Daniel O'Connor wrote:
> I am writing a program which reads from a data acquisition chassis =
connected to a radar via USB. The interface is a Cypress FX2 and I am =
communicating via libusb.

I ended up writing a kernel driver (thank you hps for usb_fifo_*!) and =
it has greatly improved things which is good news for me :)

I will some of the tests suggested by various people soon, I have to =
wait for a new PC to do them though.

--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C