Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c)
От | Larry Rosenman |
---|---|
Тема | Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c) |
Дата | |
Msg-id | 20001117112622.A11351@lerami.lerctr.org обсуждение исходный текст |
Ответ на | Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c xlog.c) (Bruce Momjian <pgman@candle.pha.pa.us>) |
Ответы |
Re: RE: [COMMITTERS] pgsql/src/backend/access/transam ( xact.c
xlog.c)
|
Список | pgsql-hackers |
* Bruce Momjian <pgman@candle.pha.pa.us> [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.... LER -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 (voice) Internet: ler@lerctr.org US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
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