Re: NetBSD 10.1 VPS became unresponsive

[Christof Meerwald <cmeerw%cmeerw.org@localhost>]

On Tue, Apr 08, 2025 at 01:13:25PM -0400, Greg Troxel wrote:
> I would write a script to run ps alxw once a minute and save it to files
> named by date +%s, and see if that results in interesting values in
> wchan on the next incident.

Finally been lucking doing that (by sending the "ps alxw" output every
minute to a remote system).

What I am seeing is that processes end up waiting in "tstile" (just
showing those).

It started at Wed Aug 20 01:39:03 UTC 2025 with:

1001  1066     1    0 117  0 39632   6748 tstile  D    ?     0:09.01 /usr/pkg/sbin/lighttpd -f /usr/pkg/etc/lighttpd/lighttpd.conf 

Wed Aug 20 01:40:03 UTC 2025
   0   603     1   0 117  0 36252   2540 tstile  Ds   ?     0:03.45 /usr/sbin/syslogd -s 
1001  1066     1   0 117  0 39632   6748 tstile  D    ?     0:09.01 /usr/pkg/sbin/lighttpd -f /usr/pkg/etc/lighttpd/lighttpd.conf 

continuing until 2 am when we get a newsyslog process:

Wed Aug 20 02:00:04 UTC 2025
   0   603     1   0 117  0 36252   2540 tstile  Ds   ?     0:03.45 /usr/sbin/syslogd -s 
1001  1066     1   0 117  0 39632   6748 tstile  D    ?     0:09.01 /usr/pkg/sbin/lighttpd -f /usr/pkg/etc/lighttpd/lighttpd.conf 
   0 16952  7133   0 117  0 15760   1612 tstile  Ds   ?     0:00.00 /usr/bin/newsyslog 


Christof

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