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Re: Re: Faster CREATE DATABASE by delaying fsync (was 8.4.1 ubuntu karmic slow createdb)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Greg Stark <gsstark(at)mit(dot)edu>, Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: Faster CREATE DATABASE by delaying fsync (was 8.4.1 ubuntu karmic slow createdb)
Date: 2010-02-14 17:37:15
Message-ID: 22649.1266169035@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-performance
Andres Freund <andres(at)anarazel(dot)de> writes:
> On Sunday 14 February 2010 18:11:39 Tom Lane wrote:
>> It seems to me that we're talking about a huge hit in both code
>> complexity and performance to deal with a problem that doesn't actually
>> occur in the field; and which furthermore is trivially solved on any
>> modern filesystem by choosing the right filesystem options.  Why don't
>> we just document those options, instead?

> Which options would that be? I am not aware that there any for any of the 
> recent linux filesystems.

Shouldn't journaling of metadata be sufficient?

			regards, tom lane

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