Re: cvs head? initdb?
От | Robert Treat |
---|---|
Тема | Re: cvs head? initdb? |
Дата | |
Msg-id | 1068826019.10333.1109.camel@camel обсуждение исходный текст |
Ответ на | Re: cvs head? initdb? (Jan Wieck <JanWieck@Yahoo.com>) |
Ответы |
Re: cvs head? initdb?
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Список | pgsql-hackers |
On Fri, 2003-11-14 at 10:32, Jan Wieck wrote: > Bruce Momjian wrote: > > Jan Wieck wrote: > >> Christopher Browne wrote: > >> > >> > elein@varlena.com (elein) writes: > >> >> What is the status of CVS head? Isn't it in sync with 7.4.RC2? I > >> >> just upgraded from CVS and rebuilt clean and initdb now gives this > >> >> lovely informative initdb failed message. > >> > > >> > No, I believe that they have started applying 7.5 patches, notably > >> > including reimplementing initdb in C. > >> > > >> > Jan checked in the ARC changes last night, and he and Tom ran into > >> > some problems, leading to that being pulled back out, while he > >> > revisits the code. > >> > >> Yeah, there was a problem with *extreme* sharing ... the code tried to > >> use the same buffer for multiple disk blocks at the same time, and > >> somehow the backends did not agree on the correct content. But it's > >> fixed and back in. You can see ARC working by setting > >> > >> buffer_strategy_status_interval = 10 # seconds > >> > >> and starting postmaster with -d1 > > > > It is not on by default? > > > > Sure not. Why would someone turn on debug messages by default? > > Or did you mean ARC itself? Since it replaced the old LRU code, it is > the only choice you have now. Which sort of raises the question if we > would want to have multiple choices, like a config option > > buffer_replacement_strategy = lru|lru2|arc > people would always want to have those choices (especially for doing development/testing/benchmarking between the different methods) the question is is it worth the effort to give people those options? Robert Treat -- Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
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