RELENG_6 panic under heavy load

[Dmitriy Kirhlarov]

On Wed, Nov 15, 2006 at 03:37:40PM -0500, Kris Kennaway wrote:
> On Wed, Nov 15, 2006 at 09:24:21PM +0300, Dmitriy Kirhlarov wrote:
> > On Tue, Nov 14, 2006 at 01:53:45PM -0500, Kris Kennaway wrote:
> > 
> > > From alc@:
> > > 
> > > ---
> > > I've never seen anything like this before.  UMA is failing to allocate
> > > the zone structure.  This is unrelated to the large-swap scenario that
> > > you ran into.  Ask him to uncomment all of the UMA debugging #define's
> > > at the start of uma_core.c.
> > 
> > It was very painfull for me and I don't get result...
> > 
> > #define UMA_DEBUG 1
> > #define UMA_DEBUG_ALLOC 1
> > #define UMA_DEBUG_ALLOC_1 1
> > 
> > in uma_core.c kill my machine.
> > I get tons of crap to serial console.
> 
> The "tons of crap" is what was necessary to proceed.

Not shure.
I can't find way for collect output of UMA_DEBUG* with current console
server and it can't be replaced before Jan.

But I think UMA* is a wrong idea.
You suppose bad hardware (I'm right?). Possible. But it can be
detected only under heavy load -- when I enabling nagios on this
server. When nagios disabled, machine work perfectly.
With enabled UMA_DEBUG* options server not operable, no one service
starting, we don't have this load and can't reproduce this behaviour.

WBR
Dmitriy