how to diagnose server freeze with ddb?
freebsd-questions-local at be-well.ilk.org
Fri May 13 17:01:03 UTC 2011
cronfy <cronfy at gmail.com> writes:
> I have a server that freezes under high load sometimes. It is on
> FreeBSD 7.3. It does not respond neither by network nor to keyboard.
> In the same time I can hit Ctrl-Alt-ESC and go to debugger - it works.
> What can I try to do in DDB to find out the reason of server freezing?
There are a lot of ddb(4) commands that show the state of the system,
and there isn't a lot to go on here. "show locks", "show alllocks",
"show intr", "show pcpu" are some of the commands that occur to me as
ones I would look at first.
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