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

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

On 12/07/2013 11:35 AM, David Holland wrote:
>   On Sat, Dec 07, 2013 at 03:40:00PM +0000, jcarr%poethecat.com@localhost wrote:
>    > My guess would be that this is a kernel issue, but I'm not sure
>    > what info to provide. More than happy to do so.
>   
>   First thing that comes to mind: is it unable to create processes (that
>   is, things hang in fork) or are processes unable to exit, so that
>   after a while the process table fills?
>   
>   Can you get ps output, perhaps from ddb?

Sure thing. It's below. I'll leave it at the debugger prompt for later 
troubleshooting.


Stopped in pid 0.2 (system) at  netbsd:cpu_Debugger+0x6: unlk    a6
db> ps
PID    LID S CPU     FLAGS       STRUCT LWP *               NAME WAIT
1081     1 3   0         0            e542600               cron vm_map
1112     1 3   0        80            e543680               sshd netio
539      1 3   0         0            e543c00               sshd vm_map
970      1 3   0         0            e542b80               cron vm_map
527      1 3   0         0            e4ea060               cron vm_map
941      1 3   0         0            e5428c0               cron vm_map
767      1 3   0        80            e341900             pickup kqueue
758      1 3   0   1000000            e5433c0                csh vm_map
945      1 3   0        80            e542e40               sshd select
1008     1 3   0         0            e543940               cron vm_map
903      1 3   0         0            e31f0a0              login vm_map
722      1 3   0         0            e543100                csh vm_map
558      1 3   0        80            e4ea5e0                top ttyout
457      1 3   0        80            e4eb3a0                csh pause
467      1 3   0         0            e4ea320       screen-4.0.3 vm_map
468      1 3   0        80            e4eae20       screen-4.0.3 pause
445      1 3   0        80            e4ea8a0                csh pause
66       1 3   0        80            e4eb660                 su wait
451      1 3   0        80            e4eb0e0                 sh wait
452      1 3   0        80            e4eab60              login wait
392      1 3   0        80            e340300            telnetd select
389      1 3   0        80            e31ede0              getty ttyraw
382      1 3   0        80            e340040               qmgr kqueue
375      1 3   0         0            e4ebbe0               cron vm_map
364      1 3   0        80            e4eb920              inetd kqueue
346      1 3   0        80            e340e00             master kqueue
117      1 3   0        80            e341640            syslogd kqueue
1        1 3   0        80            e31e2e0               init wait
0       36 3   0       200            e3405c0              nfsio nfsiod
0       35 3   0       200            e340880              nfsio nfsiod
0       34 3   0       200            e340b40              nfsio nfsiod
0       33 3   0       200            e3410c0              nfsio nfsiod
0       32 3   0       200            e341380            physiod physiod
0       31 3   0       200            e31eb20           aiodoned aiodoned
0       30 3   0       200            e31e5a0            ioflush syncer
0       29 3   0       200            e31e860           pgdaemon pgdaemon
0       26 3   0       200            e31e020              unpgc unpgc
0       25 3   0       200            e341bc0        vmem_rehash 
vmem_rehash
0       16 3   0       200            e31f360           scsibus0 sccomp
0       15 3   0       200            e31f620         pmfsuspend pmfsuspend
0       14 3   0       200            e31f8e0           pmfevent pmfevent
0       13 3   0       200            e31fba0         sopendfree sopendfr
0       12 3   0       200            e304000           nfssilly nfssilly
0       11 3   0       200            e3042c0            cachegc cachegc
0       10 3   0       200            e304580              vrele vrele
0        9 3   0       200            e304840             vdrain vdrain
0        8 3   0       200            e304b00          modunload mod_unld
0        7 3   0       200            e304dc0            xcall/0 xcall
0        6 1   0       200            e305080          softser/0
0        5 1   0       200            e305340          softclk/0
0        4 1   0       200            e305600          softbio/0
0        3 1   0       200            e3058c0          softnet/0
0    >   2 7   0       201            e305b80             idle/0
0        1 3   0       200            e1b5b20            swapper uvm