From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <36932B99.20AE3AA4@mpifr-bonn.mpg.de> Date: Wed, 06 Jan 1999 10:23:37 +0100 From: "Albrecht =?iso-8859-1?Q?Dre=DF?=" MIME-Version: 1.0 To: Benjamin Herrenschmidt CC: LinuxPPC-Dev Liste Subject: Re: Strange PMAC IDE performance problem References: <19990105234815.008275@smtp.calvacom.fr> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: Benjamin Herrenschmidt wrote: [snip] > Is there some common denominator with all those problems ? For example, I > never connect anything to my PowerBook's MESH. Did the people with the > problem have something connected to it ? never ? always ? both ? Maybe we > could collect the disk models to see if the seem to be related. Also, are > the problem similar when booting with OF and BootX or are there any > differences ? 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). Some time ago I compiled a 2.1.130 kernel WITHOUT SCSI/MESH SUPPORT (also booted via BootX), but got exactly the same results as with the "normal" kernels. Yours, Albrecht. -- +-----------------------------------------------------------------------------+ | Dr.-Ing. Albrecht Dre\3 ---- | | Max-Planck-Institut f"ur Radioastronomie |\ / /o o\ | | Technische Abt. Optische Interferometrie | \ / | / | | | Auf dem H"ugel 69 | \ | \ ---/ | | D-53121 Bonn (Germany) ------------+------+------------------- | | | / | | | Phone (+49) 228 525 319 | / / | | Fax (+49) 228 525 411 |/ / | | Mail ad@mpifr-bonn.mpg.de | +-------------- electrical engineers do it with less resistance --------------+ [[ This message was sent via the linuxppc-dev mailing list. Replies are ]] [[ not forced back to the list, so be sure to Cc linuxppc-dev if your ]] [[ reply is of general interest. To unsubscribe from linuxppc-dev, send ]] [[ the message 'unsubscribe' to linuxppc-dev-request@lists.linuxppc.org ]]