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Date:      Mon, 18 Feb 2002 07:36:33 +0100
From:      Bernd Walter <ticso@cicely8.cicely.de>
To:        Peter Wemm <peter@wemm.org>
Cc:        alpha@FreeBSD.ORG, current@FreeBSD.ORG
Subject:   Re: OK, who broke alpha this time? :-/
Message-ID:  <20020218063632.GA44861@cicely8.cicely.de>
In-Reply-To: <20020218060734.314FE3809@overcee.wemm.org>
References:  <20020218060734.314FE3809@overcee.wemm.org>

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On Sun, Feb 17, 2002 at 10:07:34PM -0800, Peter Wemm wrote:
> ...
> sio0 at port 0x3f8-0x3ff irq 4 on isa0
> sio0: type 16550A, console
> sio0: interrupting at ISA irq 4
> sio1: reserved for low-level i/o
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> Timecounter "i8254"  frequency 1193182 Hz
> ata0-slave: timeout waiting for interrupt
> ata0-slave: ATAPI identify failed
> acd0: CDROM <CD-540E> at ata0-master PIO4
> Waiting 2 seconds for SCSI devices to settle
> Mounting root from ufs:/dev/da0a
> da0 at ahc0 bus 0 target 0 lun 0
> da0: <SEAGATE ST318404LW 0006> Fixed Direct Access SCSI-3 device 
> da0: 80.000MB/s transfers (40.000MHz, offset 63, 16bit), Tagged Queueing Enabled
> da0: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C)
> da1 at ahc0 bus 0 target 1 lun 0
> da1: <IBM DMVS18V 0250> Fixed Direct Access SCSI-3 device 
> da1: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing Enabled
> da1: 17501MB (35843670 512 byte sectors: 255H 63S/T 2231C)
> ^T
> load: 0.16  cmd: init 8 [inode] 0.00u 0.00s 0% 416k
> ^T
> load: 0.16  cmd: init 8 [inode] 0.00u 0.00s 0% 416k
> [forever]
> 
> http://people.freebsd.org/~peter/alphadmesg.txt
> 
> It seems that locking has been hosed somehow.

Just guessing:
John Baldwin had enabled interrupt thread preemption some days ago.
src/sys/alpha/alpha/interrupt.c rev 1.61
Maybe it also enabled some hidden bug.

I hope to have one of my machines on -current later that day to
compare.

-- 
B.Walter              COSMO-Project         http://www.cosmo-project.de
ticso@cicely.de         Usergroup           info@cosmo-project.de


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