Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)
От | Bruce Momjian |
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Тема | Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c) |
Дата | |
Msg-id | 200011171716.MAA25108@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c) (Tom Samplonius <tom@sdf.com>) |
Ответы |
Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)
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Список | 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, Pennsylvania19026
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