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Re: Experimental patch for inter-page delay in VACUUM

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: Postgresql Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Experimental patch for inter-page delay in VACUUM
Date: 2003-11-04 17:11:16
Message-ID: 22927.1067965876@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
>> Actually, once you build it this way, you could make all writes
>> synchronous (open the files O_SYNC) so that there is never any need for
>> explicit fsync at checkpoint time.
>> 
> Or maybe fdatasync() would be slightly more efficient - do we care about 
> flushing metadata that much?

We don't, but it would just obscure the discussion to spell out "fsync,
or fdatasync where available" ...

			regards, tom lane

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