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

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: Tom Samplonius <tom@sdf.com>
Cc: Alfred Perlstein <bright@wintelcom.net>, Larry Rosenman <ler@lerctr.org>, pgsql-hackers@postgresql.org
Date: 2000-11-17T17:16:06Z
Lists: pgsql-hackers
> > 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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