From: Benjamin Herrenschmidt <bh40@calva.net>
To: "LinuxPPC-Dev Liste" <linuxppc-dev@lists.linuxppc.org>,
"Albrecht Dreß" <ad@mpifr-bonn.mpg.de>
Subject: Re: Strange PMAC IDE performance problem
Date: Wed, 6 Jan 1999 11:02:56 +0100 [thread overview]
Message-ID: <19990106110256.031920@mail.mipsys.com> (raw)
In-Reply-To: <36932B99.20AE3AA4@mpifr-bonn.mpg.de>
On Wed, Jan 6, 1999, Albrecht Dreß <ad@mpifr-bonn.mpg.de> wrote:
>I use the latest test kernel form your web page (2.1.130 with patches; btw.
>the
>trackpad patch is REALLY great!!) and boot with BootX 1.0.1. Bogus interrupts
>appear both with nothing attached to external SCSI and with a tape drive. I
>get
>very few bogus irq's from via_pmu_interrupt (c01d43fc, c01d4410) and
LOTS from
>do_IRQ (c0005518) in both cases. According to /proc/interrupts, doing a dd of
>200 MBytes form /dev/zero to the internal hd resulted in 31 bad irq's from
>do_IRQ (and a transfer rate of 1.71 MB/s).
By curiousity, did someone tried to locate the exact instruction in
do_IRQ when those bogus interrupt happens ? Looks it's always the same...
On MacOS, CodeWarrior has a useful disassembly tool that mixes C and asm
output for that, but I guess there is probably something 1000 times
better on Linux, I just need to know the command line ;-)
--
E-Mail: <mailto:bh40@calva.net>
BenH. Web : <http://calvaweb.calvacom.fr/bh40/>
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next prev parent reply other threads:[~1999-01-06 10:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-01-05 8:52 Strange PMAC IDE performance problem Timothy A. Seufert
1999-01-05 11:33 ` Albrecht Dreß
1999-01-05 17:52 ` Marcus H. Mendenhall
1999-01-05 18:49 ` Timothy A. Seufert
1999-01-05 22:48 ` Benjamin Herrenschmidt
1999-01-06 5:56 ` Dan Malek
1999-01-06 9:59 ` Benjamin Herrenschmidt
1999-01-06 9:23 ` Albrecht Dreß
1999-01-06 10:02 ` Benjamin Herrenschmidt [this message]
1999-01-06 23:22 ` Paul Mackerras
1999-01-07 9:11 ` Benjamin Herrenschmidt
1999-01-05 22:39 ` Paul Mackerras
1999-01-06 6:01 ` Paul Mackerras
1999-01-06 11:51 ` Benjamin Herrenschmidt
1999-01-06 16:02 ` Great IDE perf (WAS: Strange PMAC IDE performance) Benjamin Herrenschmidt
1999-01-07 11:12 ` Timothy A. Seufert
1999-01-07 11:32 ` Paul Mackerras
1999-01-07 18:59 ` Timothy A. Seufert
1999-01-07 11:59 ` Benjamin Herrenschmidt
1999-01-07 18:59 ` Timothy A. Seufert
1999-01-07 20:15 ` Benjamin Herrenschmidt
1999-01-08 2:06 ` Paul Mackerras
1999-01-08 3:30 ` Benjamin Herrenschmidt
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