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Date:      Thu, 19 Oct 2006 14:31:19 -0700
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        freebsd-stable@freebsd.org
Subject:   Re: em network issues
Message-ID:  <20061019213119.GA74542@icarus.home.lan>
In-Reply-To: <2a41acea0610191423q537834cfo2d0f2741fa8e8d63@mail.gmail.com>
References:  <2a41acea0610181046k822afd1qcec4187dc8514187@mail.gmail.com> <b1fa29170610181523t6d240839i887632d6d7576762@mail.gmail.com> <2a41acea0610181531y732cd5sa7bf733cc445491c@mail.gmail.com> <20061018171704.A3851@demos.bsdclusters.com> <4537C126.5000207@FreeBSD.org> <2a41acea0610191140j13d43e12q72fc7697652e222a@mail.gmail.com> <20061019190221.GH71000@droso.net> <2a41acea0610191418q6c6fac45xdd9ad824bd6cae2f@mail.gmail.com> <20061019212028.GA36814@xor.obsecurity.org> <2a41acea0610191423q537834cfo2d0f2741fa8e8d63@mail.gmail.com>

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On Thu, Oct 19, 2006 at 02:23:54PM -0700, Jack Vogel wrote:
> Other suggestions?

Is the hardware the same?  ACPI being used?  APIC being used?
How about doing something that shares interrupts simultaneously,
like copying mass amounts of data to/from a USB hard disk via
USB 2.0 (hence using usb) while copying data over NFS (hence using
em)?

I could only get the problem to happen when there was both intense
network usage **and** intense disk I/O (ata and em shared an
interrupt in my case).

-- 
| Jeremy Chadwick                                 jdc at parodius.com |
| Parodius Networking                        http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, USA |
| Making life hard for others since 1977.               PGP: 4BD6C0CB |




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