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

[Bruce Momjian]

> * Bruce Momjian <[EMAIL PROTECTED]> [001117 11:23]:
> > > > 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.
> On UnixWare, it requires the -Kthread or -Kpthread command, which then
> links in the threads library...
> 
> I'm not sure that this is a good thing or not....

I would hope it just calls the function, and does not bring in thread
startup stuff.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  [EMAIL PROTECTED]               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026