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