| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Dilip Kumar <dilipbalaut(at)gmail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, YUriy Zhuravlev <u(dot)zhuravlev(at)postgrespro(dot)ru>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Move PinBuffer and UnpinBuffer to atomics |
| Date: | 2016-03-30 07:16:16 |
| Message-ID: | 20160330071616.GA5635@awork2.anarazel.de |
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| Lists: | pgsql-hackers |
On 2016-03-30 07:13:16 +0530, Dilip Kumar wrote:
> On Tue, Mar 29, 2016 at 10:43 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
>
> > My gut feeling is that we should do both 1) and 2).
> >
> > Dilip, could you test performance of reducing ppc's spinlock to 1 byte?
> > Cross-compiling suggest that doing so "just works". I.e. replace the
> > #if defined(__ppc__) typedef from an int to a char.
> >
>
> I set that, but after that it hangs, even Initdb hangs..
Yea, as Tom pointed out that's not going to work. I'll try to write a
patch for approach 1).
Andres
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