Re: port-sun3/48432: System hangs under light load

[John Carr <jcarr%poethecat.com@localhost>]

The following reply was made to PR port-sun3/48432; it has been noted by GNATS.

From: John Carr <jcarr%poethecat.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: Lars Heidieker <lars%heidieker.de@localhost>, 
port-sun3-maintainer%netbsd.org@localhost, 
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: port-sun3/48432: System hangs under light load
Date: Sun, 08 Dec 2013 11:16:56 -0500

 On 12/08/2013 11:00 AM, Lars Heidieker wrote:
 >   On 12/08/2013 01:35 AM, matthew green wrote:
 >
 >   >  i wonder if this is another symptom of vmem/kmem changes in netbsd-6.
 >   
 >   for a sun3 I could think of the kva being very limited to be a problem,
 >   not so for sun3x.
 >   could be anything most likely something port specific.
 >   can you get some back traces and a dmesg?
 
 Sure thing. At the point of the 'ps' in the previous email, the system 
 is completely wedged (even the screen session isn't responding), which 
 is a bit worse than usual.  bt and dmesg are below:
 
 
 db> bt
 cpu_Debugger(?)
 zs_abort(0) + 6
 zstty_stint(e32fdcc,0) + 8a
 zsc_intr_hard(e32fdc0) + a8
 zshard(e32fdc0) + c
 isr_autovec(0,1,e00457a,e303800,20000e00) + 6e
 m68k_compat_13_sigreturn13_stub(e305b80) + 68
 lwp_trampoline() + e
 
 db> dmesg
 Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
      2006, 2007, 2008, 2009, 2010, 2011, 2012
      The NetBSD Foundation, Inc.  All rights reserved.
 Copyright (c) 1982, 1986, 1989, 1991, 1993
      The Regents of the University of California.  All rights reserved.
 
 NetBSD 6.1.2 (GENERIC)
 Model: sun3 60
 fpu: mc68882
 total memory = 24576 KB
 avail memory = 21984 KB
 timecounter: Timecounters tick every 10.000 msec
 mainbus0 (root)
 obio0 at mainbus0
 zsc0 at obio0 addr 0x0 ipl 6: (softpri 3)
 kbd0 at zsc0 channel 0: baud rate 1200
 ms0 at zsc0 channel 1: baud rate 1200
 zsc1 at obio0 addr 0x20000 ipl 6: (softpri 3)
 zstty0 at zsc1 channel 0 (console i/o)
 zstty1 at zsc1 channel 1
 eeprom0 at obio0 addr 0x40000
 oclock0 at obio0 addr 0x60000 ipl 5: intersil7170
 memerr0 at obio0 addr 0x80000 ipl 7: (Parity memory)
 intreg0 at obio0 addr 0xa0000
 le0 at obio0 addr 0x120000 ipl 3: address 08:00:01:01:73:55
 le0: 8 receive buffers, 2 transmit buffers
 si0 at obio0 addr 0x140000 ipl 2: options=0xf
 scsibus0 at si0: 8 targets, 8 luns per target
 obmem0 at mainbus0
 cgfour0 at obmem0 addr 0xff300000 (1152x900)
 enabling interrupts
 timecounter: Timecounter "clockinterrupt" frequency 100 Hz quality 0
 scsibus0: waiting 2 seconds for devices to settle...
 sd0 at scsibus0 target 0 lun 0: <SEAGATE, ST32155N, 0594> disk fixed
 sd0: 2049 MB, 4177 cyl, 8 head, 125 sec, 512 bytes/sect x 4197405 sectors
 sd0: async, 8-bit transfers
 boot device: sd0a
 root on sd0a dumps on sd0b
 root file system type: ffs