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From Scott Gifford <>
Subject Re: [users@httpd] Apache getting stuck with all workers in a BUSY_READ state
Date Wed, 16 Jun 2010 20:31:01 GMT
On Wed, Jun 16, 2010 at 9:33 AM, David Fallon <> wrote:

> Thanks for the suggestion, but unfortunately I've tried that - truss
> in this case is attaching post whatever it's blocking on (so I just
> see it sleeping), and I haven't yet waited out the problem to see what
> happens when/if whatever's blocking times out. Any other ideas?

truss reports nothing?  Not that it's waiting in a blocking operation?  On
the systems I'm familiar with at least, that means it's not waiting for I/O,
but is off doing something else.  That would indicate it's not waiting for a
proxy response or a user request, but something else altogether.  I'm not
sure what your system is, so its truss may behave differently, you could do
some quick experiments if you're not sure either.

The suggestion to take a look in a debugger is a good one if your Apache has
debugging symbols.  That may be a good next step.

Good luck!


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