Re: spinlocks on HP-UX - Mailing list pgsql-hackers

From Pavan Deolasee
Subject Re: spinlocks on HP-UX
Date
Msg-id CABOikdPv=KaNk=8zd24EJgcOOFzgiNXP02oAWHnzCw_idb69cw@mail.gmail.com
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In response to Re: spinlocks on HP-UX  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: spinlocks on HP-UX
List pgsql-hackers
On Tue, Oct 18, 2011 at 10:04 AM, Robert Haas <robertmhaas@gmail.com> wrote:

> Hmm, so you added the non-locked test in TAS()?  Did you try adding it
> just to TAS_SPIN()?  On Itanium, I found that it was slightly better
> to do it only in TAS_SPIN() - i.e. in the contended case.
>

Would it be a good change for S_LOCK() to use TAS_SPIN()  as well ?

Thanks,
Pavan

--
Pavan Deolasee
EnterpriseDB     http://www.enterprisedb.com


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