From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
---|---|
To: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
Cc: | Peter Geoghegan <pg(at)heroku(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: hung backends stuck in spinlock heavy endless loop |
Date: | 2015-01-24 10:41:24 |
Message-ID: | 20150124104124.GA23302@svana.org |
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Lists: | pgsql-hackers |
On Thu, Jan 22, 2015 at 03:50:03PM -0600, Merlin Moncure wrote:
> Quick update: not done yet, but I'm making consistent progress, with
> several false starts. (for example, I had a .conf problem with the
> new dynamic shared memory setting and git merrily bisected down to the
> introduction of the feature.).
> I have to triple check everything :(. The problem is generally
> reproducible but I get false negatives that throws off the bisection.
> I estimate that early next week I'll have it narrowed down
> significantly if not to the exact offending revision.
I've never used it but the BBChop project claims to be able to bisect
even in the case of intermittent failure.
https://github.com/Ealdwulf/bbchop/
It claims to be slow, but I don't think that's the limiting factor here...
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> He who writes carelessly confesses thereby at the very outset that he does
> not attach much importance to his own thoughts.
-- Arthur Schopenhauer
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