From owner-freebsd-hackers@FreeBSD.ORG Wed Aug 19 07:22:21 2009 Return-Path: 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 A891C106564A for ; Wed, 19 Aug 2009 07:22:21 +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 1D4A28FC3F for ; Wed, 19 Aug 2009 07:22:20 +0000 (UTC) Received: from inchoate.gsoft.com.au (inchoate.gsoft.com.au [203.31.81.30]) (authenticated bits=0) by cain.gsoft.com.au (8.13.8/8.13.8) with ESMTP id n7J7MIFC078084 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Wed, 19 Aug 2009 16:52:19 +0930 (CST) (envelope-from doconnor@gsoft.com.au) From: "Daniel O'Connor" To: freebsd-hackers@freebsd.org Date: Wed, 19 Aug 2009 16:52:10 +0930 User-Agent: KMail/1.9.10 References: <200908191253.27951.doconnor@gsoft.com.au> In-Reply-To: <200908191253.27951.doconnor@gsoft.com.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2910627.2lzZYsk1vF"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200908191652.11825.doconnor@gsoft.com.au> X-Spam-Score: -3.601 () ALL_TRUSTED,AWL,BAYES_00 X-Scanned-By: MIMEDefang 2.63 on 203.31.81.10 Subject: Re: PCI IRQ latency X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Aug 2009 07:22:21 -0000 --nextPart2910627.2lzZYsk1vF Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Wed, 19 Aug 2009, Daniel O'Connor wrote: > Unfortunately it seems that _something_ blocks interrupts for >4 > milliseconds, however I have no real idea how to go about finding > what it is.. Does anyone have any suggestions? (apart from get a new > DAQ card, I know this one already :) Actually it appears I have misread my diagnostics and it's not a lack of=20 interrupts, rather the reading process gets stalled (by up to 5 seconds=20 at a time). Sorry for the noise :( =2D-=20 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 --nextPart2910627.2lzZYsk1vF Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iD8DBQBKi6gj5ZPcIHs/zowRAk1fAJ0dqcFUW1/g4lPg33xmt8ZK5bEBUwCfZfN/ sUn1B1h83gfDAYlNjwqqL5U= =FWY7 -----END PGP SIGNATURE----- --nextPart2910627.2lzZYsk1vF--