| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: FastPathStrongRelationLocks still has an issue in HEAD |
| Date: | 2014-04-07 14:48:55 |
| Message-ID: | 20140407144855.GD4161@awork2.anarazel.de |
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| Thread: | |
| Lists: | pgsql-hackers |
On 2014-04-07 10:45:51 -0400, Robert Haas wrote:
> On Mon, Apr 7, 2014 at 10:20 AM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> > Hm. It generally might be interesting to get a few !X86 buildfarms
> > running builds with LTO enabled. That might expose some dangerous
> > assumptions more easily.
>
> I strongly suspect that will break stuff all over the place. We can
> either get compiler barriers working for real, or we can start
> volatile-izing every reference in an LWLock-protected critical
> section. Hint: the second one is insane.
You don't have to convince me. The way there is where I am not sure
we're agreeing.
I didn't break a few months back for x86 on light loads btw. Not that
that's saying much.
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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