Date: Tue, 18 Jan 2000 17:30:52 -0500 (EST) From: spork <spork@super-g.com> To: Dan Nelson <dnelson@emsphone.com> Cc: freebsd-hackers@FreeBSD.ORG, noc@inch.com Subject: Re: high load, nothing happening? (LONG) Message-ID: <Pine.BSF.4.00.10001181728250.899-100000@super-g.inch.com> In-Reply-To: <20000118130250.A97656@dan.emsphone.com>
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On Tue, 18 Jan 2000, Dan Nelson wrote:
> > That's another thing, the box is idle as we've yet to move it into
> > production. Out of curiousity, how does one make a machine panic
> > manually?
>
> CTRL-ALT-ESC, and at the prompt type in 'panic'. You'll need DDB
> compiled into the kernel, and crashdumps enabled.
By now, you should know my next question... What am I looking at? I
built a kernel with "config -g" and the debugger option and made it panic
while sitting at a load of 3.0... Following the handbook instructions, I
see this:
(kgdb) where
#0 boot (howto=256) at ../../kern/kern_shutdown.c:285
#1 0xc014f085 in panic (fmt=0xc0225638 "from debugger")
at ../../kern/kern_shutdown.c:446
#2 0xc0129565 in db_panic (addr=-1071629621, have_addr=0, count=-1,
modif=0xc023f7b4 "") at ../../ddb/db_command.c:432
#3 0xc0129505 in db_command (last_cmdp=0xc0242128, cmd_table=0xc0241f88,
aux_cmd_tablep=0xc0255d28) at ../../ddb/db_command.c:332
#4 0xc01295ca in db_command_loop () at ../../ddb/db_command.c:454
#5 0xc012ba43 in db_trap (type=3, code=0) at ../../ddb/db_trap.c:71
#6 0xc02038a6 in kdb_trap (type=3, code=0, regs=0xc023f8a4)
at ../../i386/i386/db_interface.c:157
#7 0xc020e058 in trap (frame={tf_es = 16, tf_ds = 16, tf_edi =
-1071682944,
tf_esi = 134, tf_ebp = -1071384344, tf_isp = -1071384372, tf_ebx =
0,
tf_edx = -1071414972, tf_ecx = -1072984320, tf_eax = 38, tf_trapno =
3,
tf_err = 0, tf_eip = -1071629621, tf_cs = 8, tf_eflags = 582,
tf_esp = -1071414988, tf_ss = -1071426239}) at
../../i386/i386/trap.c:548
#8 0xc0203acb in Debugger (msg=0xc0235541 "manual escape to debugger")
at ../../i386/i386/db_interface.c:317
#9 0xc01ff03c in scgetc (kbd=0xc026739c, flags=2)
at ../../dev/syscons/syscons.c:3947
#10 0xc01f9ff0 in sckbdevent (thiskbd=0xc026739c, event=0, arg=0x0)
at ../../dev/syscons/syscons.c:844
where do I go from here? What's this telling me? I assume this procedure
was to see what the three "waiting" processes were and what they were
doing at the time?
Thanks,
Charles
> --
> Dan Nelson
> dnelson@emsphone.com
>
>
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