Date: Mon, 11 Apr 2016 10:01:13 -0400 From: "D'Arcy J.M. Cain" <da...@netbsd.org>
Crash didn't help. When I pressed enter it dumped a ps output to the screen, probably the last command I ran when the system was up. Here is a partial output of that as far back as screen would go. [...] I tried doing ps/n|more and crash just hung. Trying to exec more may not work here. Next time this happens, can you just write down some of the pids from top output that are in tstile, and ask crash to, e.g., `bt 0t18999'? (`0t' means decimal input, as opposed to the default hexadecimal.) Another useful indication is the `flt_no' wchan (which likely means one of the flt_noram[123456] waits), which suggests that the uvm pager is stuck waiting for something -- probably waiting for the pager daemon to do disk I/O, and all the other processes are probably stuck waiting for a lock held by someone stuck in disk I/O.
