Date: Wed, 19 Aug 2009 16:48:20 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Zaphod Beeblebrox <zbeeble@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: PCI IRQ latency Message-ID: <200908191648.28262.doconnor@gsoft.com.au> In-Reply-To: <5f67a8c40908182335y59679131u373e8a3b27856909@mail.gmail.com> References: <200908191253.27951.doconnor@gsoft.com.au> <5f67a8c40908182335y59679131u373e8a3b27856909@mail.gmail.com>
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--nextPart1857688.HQhRhjnCY3 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Wed, 19 Aug 2009, Zaphod Beeblebrox wrote: > On Tue, Aug 18, 2009 at 11:23 PM, Daniel O'Connor=20 <doconnor@gsoft.com.au>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 :) > > This is a huge shot-in-the-dark, but could this be something like > ACPI or some other motherboard legacy cpu-using evil? Would it be > possible to test on something opposite-ish of what you're using (ie: > amd vs. intel) just to cycle out all the potential goo? It's worth a shot, I'll see if I can dig up some other hardware, thanks. =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 --nextPart1857688.HQhRhjnCY3 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) iD8DBQBKi6dE5ZPcIHs/zowRAqsgAJ9WNdRa3jJDo8kuzmTeYirStXQWjgCgpBBt EFUY0XhqWSdGNv8Quh8p12M= =+wq0 -----END PGP SIGNATURE----- --nextPart1857688.HQhRhjnCY3--
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