| From: | Vadim Mikheev <vadim(at)krasnet(dot)ru> |
|---|---|
| To: | Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | PostgreSQL Developers List <hackers(at)postgreSQL(dot)org> |
| Subject: | Re: [HACKERS] lmgr changed |
| Date: | 1999-05-14 12:37:56 |
| Message-ID: | 373C1924.35A5D40E@krasnet.ru |
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| Thread: | |
| Lists: | pgsql-hackers |
Bruce Momjian wrote:
>
> > 1. Check for other waiters is moved from LockResolveConflict
> > to LockAquire.
> > 2. Don't take other waiters into account if either lock
> > aquired by MyProc don't conflict with locks aquired by
> > waiters or MyProc already holds conflicting lock.
> > 3. ProcSleep uses conflict table to order waiters. Priority
> > not used.
> > 4. ProcLockWakeup stops attempts to wakeup waiters if lock
> > conflict found _and_ someone was already wakeuped.
> > 5. DeadLockCheck is able to wakeup MyProc or other proc
> > to prevent deadlock.
> >
> > Below are tests I run. Hope that lmgr issues are closed.
>
> Thanks Vadim. I don't think I could have made those changes myself.
I should took locking into account before beta!
Sorry.
Vadim
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