RELENG_7 2008/01/10 desktop system also periodically freezes
fbsd at opal.com
Fri Jan 11 09:49:38 PST 2008
On Thu, 10 Jan 2008 08:32:12 +0100, Kris Kennaway <kris at freebsd.org> wrote:
> J.R. Oldroyd wrote:
> > On Wed, 09 Jan 2008 20:38:29 +0100, Kris Kennaway <kris at freebsd.org> wrote:
> >> OK, same requests as to the others then.
> > I presume you mean hwpmc...
> LOCK_PROFILING, sched_graph, hwpmc.
Quick update on this so that folk know what's going on.
Firstly, I've updated the code here to RELENG_7 csup'd yesterday and
if I run a "normal" kernel, without debugging, I do see the same freezes
with that, too.
Secondly, I am unable to process hwpcm dumps using pmcstat because it
core dumps when using the "-R" option to decode a dump. I will talk to
jkoshy@ about that.
I am now running a kernel with LOCK_PROFILING. I am able to create a
freeze due to the softupdate activity by removing a large file; a lock
profile captured surrounding such a freeze can be seen here:
This is easily repeatable. The sequence is:
create 1.5GB file
... wait, moving mouse until it freezes then unfreezes ...
Kostik, is this of any help to you?
I have yet to experience a "random" freeze not directly attributable
to a softupdate while running the lock profiling. I am running with
lock profiling on, and resetting the profiling counters once a minute.
Yesterday and this morning, I've run for quite a while now with lock
profiling on but without a "random" freeze. I'll wait some more, but
I'm hoping that enabling the lock profiling hasn't masked the freeze.
I'll post again when I see one..
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 187 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20080111/2a595b07/signature.pgp
More information about the freebsd-stable