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On 17-Jan-05, at 5:22 PM, D'Arcy J.M. Cain wrote:

> On Tue, 11 Jan 2005 17:30:44 -0500
> "D'Arcy J.M. Cain" <darcy@NetBSD.org> wrote:
>>> | Note that gcore fails on -current as well.  The gdb attach works
>>> | fine though.  Unfortunately, so does PostgreSQL (it doesn't get
>>> | into a busy loop) so I can't use that to track down my PostgreSQL
>>> | problem.
>>>
>>> So the problem is fixed :-)
>>
>> In -current, yes.  But we can't leave our release in that state, can
>> we?
>>  That's why I am trying to debug this with the 2.0 branch instead of
>>  the
>> release.  I am hoping we can fix this for 2.0.1 or at least 2.1.
>
> It's possible that I have identified the change that fixes this.  In
> src/sys/kern/sysv_sem.c the following was pulled up in ticket #903.
> Could this be the critical change?  I am testing this now and so is
> Andreas Wrede (he was discussing this in the -help mailing list) so we

Unfortunately this change is not it. postgres went into a loop again 
within 25 minutes of rebooting with the patched kernel.  And again, 
gcore produces 'gcore: ptrace(PT_DUMPCORE) failed: Permission denied'. 
Note that gcore on a postgres process that is not looping works just 
fine.

-- 
	aew

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