Re: LWLock contention: I think I understand the problem - Mailing list pgsql-hackers

From Hannu Krosing
Subject Re: LWLock contention: I think I understand the problem
Date
Msg-id 3C3947BB.FD97D22C@tm.ee
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In response to Re: LWLock contention: I think I understand the problem  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: LWLock contention: I think I understand the problem  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Tom Lane wrote:
> 
> Hannu Krosing <hannu@krosing.net> writes:
> > I misinterpreted the fact that new VACUUM will skip locked pages
> 
> Huh?  There is no such "fact".
> 
>                         regards, tom lane

Was it not the case that instead of locking whole tables the new 
vacuum locks only one page at a time. If it can't lock that page it 
just moves to next one instead of waiting for other backend to release 
its lock. At least I remember that this was the (proposed?) behaviour 
once.

---------------
Hannu


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