Re: 8.4.1 ubuntu karmic slow createdb

In my limited experience ext4 as presented by Karmic is not db friendly.  I
had to carve my swap partition into a swap partition and an xfs partition to
get better db performance.  Try fsync=off first, but if that doesn't work
then try a mini xfs.


On Thu, Dec 10, 2009 at 5:09 PM, Andres Freund <andres@anarazel.de> wrote:

> Hi,
>
> On Thursday 10 December 2009 23:01:08 Michael Clemmons wrote:
> > Im not sure what that means ppl in my office with slower hd speeds using
> >  8.4 can create a db in 2s vs my 8-12s.
> - Possibly their config is different - they could have disabled the "fsync"
> parameter which turns the database to be not crashsafe anymore but much
> faster
> in some circumstances.
>
> - Possibly you have much data in your template1 database?
> You could check whether
>
> CREATE DATABASE speedtest TEMPLATE template1; takes more time than
> CREATE DATABASE speedtest TEMPLATE template0;.
>
> You should issue both multiple times to ensure caching on the template
> database doesnt play a role.
>
> >  Could using md5 instead of ident do it?
> Seems unlikely.
> Is starting psql near-instantaneus? Are you using "createdb" or are you
> issuing "CREATE DATABASE ..."?
>
> Andres
>
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