Re: [HACKERS] RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.cxlog.c)

[Bruce Momjian]

> > sleep(3) should conform to POSIX specification, if anyone has the
> > reference they can check it to see what the effect of sleep(0)
> > should be.
> 
>   Yes, but Posix also specifies sched_yield() which rather explicitly
> allows a process to yield its timeslice.  No idea how well that is
> supported.

I have it on BSDI.  We could add a configure check, and use it if it is
there.  Another idea is to add a shared memory flag when someone enters
the 'commit' section of the transaction code.  That way, a backend could
check to see if another process is _about_ to commit, and wait.

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